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2020-07-29ipv4: Silence suspicious RCU usage warningIdo Schimmel
fib_trie_unmerge() is called with RTNL held, but not from an RCU read-side critical section. This leads to the following warning [1] when the FIB alias list in a leaf is traversed with hlist_for_each_entry_rcu(). Since the function is always called with RTNL held and since modification of the list is protected by RTNL, simply use hlist_for_each_entry() and silence the warning. [1] WARNING: suspicious RCU usage 5.8.0-rc4-custom-01520-gc1f937f3f83b #30 Not tainted ----------------------------- net/ipv4/fib_trie.c:1867 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by ip/164: #0: ffffffff85a27850 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x49a/0xbd0 stack backtrace: CPU: 0 PID: 164 Comm: ip Not tainted 5.8.0-rc4-custom-01520-gc1f937f3f83b #30 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014 Call Trace: dump_stack+0x100/0x184 lockdep_rcu_suspicious+0x153/0x15d fib_trie_unmerge+0x608/0xdb0 fib_unmerge+0x44/0x360 fib4_rule_configure+0xc8/0xad0 fib_nl_newrule+0x37a/0x1dd0 rtnetlink_rcv_msg+0x4f7/0xbd0 netlink_rcv_skb+0x17a/0x480 rtnetlink_rcv+0x22/0x30 netlink_unicast+0x5ae/0x890 netlink_sendmsg+0x98a/0xf40 ____sys_sendmsg+0x879/0xa00 ___sys_sendmsg+0x122/0x190 __sys_sendmsg+0x103/0x1d0 __x64_sys_sendmsg+0x7d/0xb0 do_syscall_64+0x54/0xa0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fc80a234e97 Code: Bad RIP value. RSP: 002b:00007ffef8b66798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc80a234e97 RDX: 0000000000000000 RSI: 00007ffef8b66800 RDI: 0000000000000003 RBP: 000000005f141b1c R08: 0000000000000001 R09: 0000000000000000 R10: 00007fc80a2a8ac0 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007ffef8b67008 R15: 0000556fccb10020 Fixes: 0ddcf43d5d4a ("ipv4: FIB Local/MAIN table collapse") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-29vxlan: Ensure FDB dump is performed under RCUIdo Schimmel
The commit cited below removed the RCU read-side critical section from rtnl_fdb_dump() which means that the ndo_fdb_dump() callback is invoked without RCU protection. This results in the following warning [1] in the VXLAN driver, which relied on the callback being invoked from an RCU read-side critical section. Fix this by calling rcu_read_lock() in the VXLAN driver, as already done in the bridge driver. [1] WARNING: suspicious RCU usage 5.8.0-rc4-custom-01521-g481007553ce6 #29 Not tainted ----------------------------- drivers/net/vxlan.c:1379 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by bridge/166: #0: ffffffff85a27850 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0xea/0x1090 stack backtrace: CPU: 1 PID: 166 Comm: bridge Not tainted 5.8.0-rc4-custom-01521-g481007553ce6 #29 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014 Call Trace: dump_stack+0x100/0x184 lockdep_rcu_suspicious+0x153/0x15d vxlan_fdb_dump+0x51e/0x6d0 rtnl_fdb_dump+0x4dc/0xad0 netlink_dump+0x540/0x1090 __netlink_dump_start+0x695/0x950 rtnetlink_rcv_msg+0x802/0xbd0 netlink_rcv_skb+0x17a/0x480 rtnetlink_rcv+0x22/0x30 netlink_unicast+0x5ae/0x890 netlink_sendmsg+0x98a/0xf40 __sys_sendto+0x279/0x3b0 __x64_sys_sendto+0xe6/0x1a0 do_syscall_64+0x54/0xa0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe14fa2ade0 Code: Bad RIP value. RSP: 002b:00007fff75bb5b88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00005614b1ba0020 RCX: 00007fe14fa2ade0 RDX: 000000000000011c RSI: 00007fff75bb5b90 RDI: 0000000000000003 RBP: 00007fff75bb5b90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00005614b1b89160 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Fixes: 5e6d24358799 ("bridge: netlink dump interface at par with brctl") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-29IB/rdmavt: Fix RQ counting issues causing use of an invalid RWQEMike Marciniszyn
The lookaside count is improperly initialized to the size of the Receive Queue with the additional +1. In the traces below, the RQ size is 384, so the count was set to 385. The lookaside count is then rarely refreshed. Note the high and incorrect count in the trace below: rvt_get_rwqe: [hfi1_0] wqe ffffc900078e9008 wr_id 55c7206d75a0 qpn c qpt 2 pid 3018 num_sge 1 head 1 tail 0, count 385 rvt_get_rwqe: (hfi1_rc_rcv+0x4eb/0x1480 [hfi1] <- rvt_get_rwqe) ret=0x1 The head,tail indicate there is only one RWQE posted although the count says 385 and we correctly return the element 0. The next call to rvt_get_rwqe with the decremented count: rvt_get_rwqe: [hfi1_0] wqe ffffc900078e9058 wr_id 0 qpn c qpt 2 pid 3018 num_sge 0 head 1 tail 1, count 384 rvt_get_rwqe: (hfi1_rc_rcv+0x4eb/0x1480 [hfi1] <- rvt_get_rwqe) ret=0x1 Note that the RQ is empty (head == tail) yet we return the RWQE at tail 1, which is not valid because of the bogus high count. Best case, the RWQE has never been posted and the rc logic sees an RWQE that is too small (all zeros) and puts the QP into an error state. In the worst case, a server slow at posting receive buffers might fool rvt_get_rwqe() into fetching an old RWQE and corrupt memory. Fix by deleting the faulty initialization code and creating an inline to fetch the posted count and convert all callers to use new inline. Fixes: f592ae3c999f ("IB/rdmavt: Fracture single lock used for posting and processing RWQEs") Link: https://lore.kernel.org/r/20200728183848.22226.29132.stgit@awfm-01.aw.intel.com Reported-by: Zhaojuan Guo <zguo@redhat.com> Cc: <stable@vger.kernel.org> # 5.4.x Reviewed-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Tested-by: Honggang Li <honli@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-29Merge tag 'drm-fixes-2020-07-29' of git://anongit.freedesktop.org/drm/drm ↵Linus Torvalds
into master Pull drm fixes from Dave Airlie: "The nouveau fixes missed the last pull by a few hours, and we had a few arm driver/panel/bridge fixes come in. This is possibly a bit more than I'm comfortable sending at this stage, but I've looked at each patch, the core + nouveau patches fix regressions, and the arm related ones are all around screens turning on and working, and are mostly trivial patches, the line count is mostly in comments. core: - fix possible use-after-free drm_fb_helper: - regression fix to use memcpy_io on bochs' sparc64 nouveau: - format modifiers fixes - HDA regression fix - turing modesetting race fix of: - fix a double free dbi: - fix SPI Type 1 transfer mcde: - fix screen stability crash panel: - panel: fix display noise on auo,kd101n80-45na - panel: delay HPD checks for boe_nv133fhm_n61 bridge: - bridge: drop connector check in nwl-dsi bridge - bridge: set proper bridge type for adv7511" * tag 'drm-fixes-2020-07-29' of git://anongit.freedesktop.org/drm/drm: drm: hold gem reference until object is no longer accessed drm/dbi: Fix SPI Type 1 (9-bit) transfer drm/drm_fb_helper: fix fbdev with sparc64 drm/mcde: Fix stability issue drm/bridge: nwl-dsi: Drop DRM_BRIDGE_ATTACH_NO_CONNECTOR check. drm/panel: Fix auo, kd101n80-45na horizontal noise on edges of panel drm: panel: simple: Delay HPD checking on boe_nv133fhm_n61 for 15 ms drm/bridge/adv7511: set the bridge type properly drm: of: Fix double-free bug drm/nouveau/fbcon: zero-initialise the mode_cmd2 structure drm/nouveau/fbcon: fix module unload when fbcon init has failed for some reason drm/nouveau/kms/tu102: wait for core update to complete when assigning windows drm/nouveau/kms/gf100: use correct format modifiers drm/nouveau/disp/gm200-: fix regression from HDA SOR selection changes
2020-07-29random32: update the net random state on interrupt and activityWilly Tarreau
This modifies the first 32 bits out of the 128 bits of a random CPU's net_rand_state on interrupt or CPU activity to complicate remote observations that could lead to guessing the network RNG's internal state. Note that depending on some network devices' interrupt rate moderation or binding, this re-seeding might happen on every packet or even almost never. In addition, with NOHZ some CPUs might not even get timer interrupts, leaving their local state rarely updated, while they are running networked processes making use of the random state. For this reason, we also perform this update in update_process_times() in order to at least update the state when there is user or system activity, since it's the only case we care about. Reported-by: Amit Klein <aksecurity@gmail.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Eric Dumazet <edumazet@google.com> Cc: "Jason A. Donenfeld" <Jason@zx2c4.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: <stable@vger.kernel.org> Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-29virtio_balloon: fix up endian-ness for free cmd idMichael S. Tsirkin
free cmd id is read using virtio endian, spec says all fields in balloon are LE. Fix it up. Fixes: 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT") Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Wei Wang <wei.w.wang@intel.com> Acked-by: David Hildenbrand <david@redhat.com>
2020-07-29virtio-balloon: Document byte ordering of poison_valAlexander Duyck
The poison_val field in the virtio_balloon_config is treated as a little-endian field by the host. Since we are currently only having to deal with a single byte poison value this isn't a problem, however if the value should ever expand it would cause byte ordering issues. Document that in the code so that we know that if the value should ever expand we need to byte swap the value on big-endian architectures. Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Link: https://lore.kernel.org/r/20200713203539.17140.71425.stgit@localhost.localdomain Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: David Hildenbrand <david@redhat.com>
2020-07-29vhost/scsi: fix up req type endian-nessMichael S. Tsirkin
vhost/scsi doesn't handle type conversion correctly for request type when using virtio 1.0 and up for BE, or cross-endian platforms. Fix it up using vhost_32_to_cpu. Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2020-07-29Merge branch 'nvme-5.8' of git://git.infradead.org/nvme into block-5.8Jens Axboe
Pull NVMe fixes from Christoph. * 'nvme-5.8' of git://git.infradead.org/nvme: nvme: add a Identify Namespace Identification Descriptor list quirk nvme-pci: prevent SK hynix PC400 from using Write Zeroes command nvme-tcp: fix possible hang waiting for icresp response
2020-07-29RDMA/mlx5: Allow providing extra scatter CQE QP flagLeon Romanovsky
Scatter CQE feature relies on two flags MLX5_QP_FLAG_SCATTER_CQE and MLX5_QP_FLAG_ALLOW_SCATTER_CQE, both of them can be provided without relation to device capability. Relax global validity check to allow MLX5_QP_FLAG_ALLOW_SCATTER_CQE QP flag. Existing user applications are failing on this new validity check. Fixes: 90ecb37a751b ("RDMA/mlx5: Change scatter CQE flag to be set like other vendor flags") Fixes: 37518fa49f76 ("RDMA/mlx5: Process all vendor flags in one place") Link: https://lore.kernel.org/r/20200728120255.805733-1-leon@kernel.org Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-29firmware: Fix a reference count leak.Qiushi Wu
kobject_init_and_add() takes reference even when it fails. If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Callback function fw_cfg_sysfs_release_entry() in kobject_put() can handle the pointer "entry" properly. Signed-off-by: Qiushi Wu <wu000273@umn.edu> Link: https://lore.kernel.org/r/20200613190533.15712-1-wu000273@umn.edu Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-07-29x86/i8259: Use printk_deferred() to prevent deadlockThomas Gleixner
0day reported a possible circular locking dependency: Chain exists of: &irq_desc_lock_class --> console_owner --> &port_lock_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&port_lock_key); lock(console_owner); lock(&port_lock_key); lock(&irq_desc_lock_class); The reason for this is a printk() in the i8259 interrupt chip driver which is invoked with the irq descriptor lock held, which reverses the lock operations vs. printk() from arbitrary contexts. Switch the printk() to printk_deferred() to avoid that. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/87365abt2v.fsf@nanos.tec.linutronix.de
2020-07-29revert: 1320a4052ea1 ("audit: trigger accompanying records when no rules ↵Paul Moore
present") Unfortunately the commit listed in the subject line above failed to ensure that the task's audit_context was properly initialized/set before enabling the "accompanying records". Depending on the situation, the resulting audit_context could have invalid values in some of it's fields which could cause a kernel panic/oops when the task/syscall exists and the audit records are generated. We will revisit the original patch, with the necessary fixes, in a future kernel but right now we just want to fix the kernel panic with the least amount of added risk. Cc: stable@vger.kernel.org Fixes: 1320a4052ea1 ("audit: trigger accompanying records when no rules present") Reported-by: j2468h@googlemail.com Signed-off-by: Paul Moore <paul@paul-moore.com>
2020-07-29ALSA: hda: fix NULL pointer dereference during suspendRanjani Sridharan
When the ASoC card registration fails and the codec component driver never probes, the codec device is not initialized and therefore memory for codec->wcaps is not allocated. This results in a NULL pointer dereference when the codec driver suspend callback is invoked during system suspend. Fix this by returning without performing any actions during codec suspend/resume if the card was not registered successfully. Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Link: https://lore.kernel.org/r/20200728231011.1454066-1-ranjani.sridharan@linux.intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-29nvme: add a Identify Namespace Identification Descriptor list quirkChristoph Hellwig
Add a quirk for a device that does not support the Identify Namespace Identification Descriptor list despite claiming 1.3 compliance. Fixes: ea43d9709f72 ("nvme: fix identify error status silent ignore") Reported-by: Ingo Brunberg <ingo_brunberg@web.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Ingo Brunberg <ingo_brunberg@web.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
2020-07-29Merge tag 'drm-misc-fixes-2020-07-28' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes * drm: fix possible use-after-free * dbi: fix SPI Type 1 transfer * drm_fb_helper: use memcpy_io on bochs' sparc64 * mcde: fix stability * panel: fix display noise on auo,kd101n80-45na * panel: delay HPD checks for boe_nv133fhm_n61 * bridge: drop connector check in nwl-dsi bridge * bridge: set proper bridge type for adv7511 * of: fix a double free Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20200728110446.GA8076@linux-uq9g
2020-07-28Documentation: bareudp: Corrected description of bareudp module.Martin Varghese
Removed redundant words. Fixes: 571912c69f0e ("net: UDP tunnel encapsulation module for tunnelling different protocols like MPLS, IP, NSH etc.") Signed-off-by: Martin Varghese <martin.varghese@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28bareudp: forbid mixing IP and MPLS in multiproto modeGuillaume Nault
In multiproto mode, bareudp_xmit() accepts sending multicast MPLS and IPv6 packets regardless of the bareudp ethertype. In practice, this let an IP tunnel send multicast MPLS packets, or an MPLS tunnel send IPv6 packets. We need to restrict the test further, so that the multiproto mode only enables * IPv6 for IPv4 tunnels, * or multicast MPLS for unicast MPLS tunnels. To improve clarity, the protocol validation is moved to its own function, where each logical test has its own condition. v2: s/ntohs/htons/ Fixes: 4b5f67232d95 ("net: Special handling for IP & MPLS.") Signed-off-by: Guillaume Nault <gnault@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28ipv6: Fix nexthop refcnt leak when creating ipv6 route infoXiyu Yang
ip6_route_info_create() invokes nexthop_get(), which increases the refcount of the "nh". When ip6_route_info_create() returns, local variable "nh" becomes invalid, so the refcount should be decreased to keep refcount balanced. The reference counting issue happens in one exception handling path of ip6_route_info_create(). When nexthops can not be used with source routing, the function forgets to decrease the refcnt increased by nexthop_get(), causing a refcnt leak. Fix this issue by pulling up the error source routing handling when nexthops can not be used with source routing. Fixes: f88d8ea67fbd ("ipv6: Plumb support for nexthop object in a fib6_info") Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28Merge branch 'Fix-bugs-in-Octeontx2-netdev-driver'David S. Miller
Subbaraya Sundeep says: ==================== Fix bugs in Octeontx2 netdev driver There are problems in the existing Octeontx2 netdev drivers like missing cancel_work for the reset task, missing lock in reset task and missing unergister_netdev in driver remove. This patch set fixes the above problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28octeontx2-pf: Unregister netdev at driver removeSubbaraya Sundeep
Added unregister_netdev in the driver remove function. Generally unregister_netdev is called after disabling all the device interrupts but here it is called before disabling device mailbox interrupts. The reason behind this is VF needs mailbox interrupt to communicate with its PF to clean up its resources during otx2_stop. otx2_stop disables packet I/O and queue interrupts first and by using mailbox interrupt communicates to PF to free VF resources. Hence this patch calls unregister_device just before disabling mailbox interrupts. Fixes: 3184fb5ba96e ("octeontx2-vf: Virtual function driver support") Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28octeontx2-pf: cancel reset_task workSubbaraya Sundeep
During driver exit cancel the queued reset_task work in VF driver. Fixes: 3184fb5ba96e ("octeontx2-vf: Virtual function driver support") Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28octeontx2-pf: Fix reset_task bugsSubbaraya Sundeep
Two bugs exist in the code related to reset_task in PF driver one is the missing protection against network stack ndo_open and ndo_close. Other one is the missing cancel_work. This patch fixes those problems. Fixes: 4ff7d1488a84 ("octeontx2-pf: Error handling support") Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28mlx4: disable device on shutdownJakub Kicinski
It appears that not disabling a PCI device on .shutdown may lead to a Hardware Error with particular (perhaps buggy) BIOS versions: mlx4_en: eth0: Close port called mlx4_en 0000:04:00.0: removed PHC reboot: Restarting system {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 1 {1}[Hardware Error]: event severity: fatal {1}[Hardware Error]: Error 0, type: fatal {1}[Hardware Error]: section_type: PCIe error {1}[Hardware Error]: port_type: 4, root port {1}[Hardware Error]: version: 1.16 {1}[Hardware Error]: command: 0x4010, status: 0x0143 {1}[Hardware Error]: device_id: 0000:00:02.2 {1}[Hardware Error]: slot: 0 {1}[Hardware Error]: secondary_bus: 0x04 {1}[Hardware Error]: vendor_id: 0x8086, device_id: 0x2f06 {1}[Hardware Error]: class_code: 000604 {1}[Hardware Error]: bridge: secondary_status: 0x2000, control: 0x0003 {1}[Hardware Error]: aer_uncor_status: 0x00100000, aer_uncor_mask: 0x00000000 {1}[Hardware Error]: aer_uncor_severity: 0x00062030 {1}[Hardware Error]: TLP Header: 40000018 040000ff 791f4080 00000000 [hw error repeats] Kernel panic - not syncing: Fatal hardware error! CPU: 0 PID: 2189 Comm: reboot Kdump: loaded Not tainted 5.6.x-blabla #1 Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 05/05/2017 Fix the mlx4 driver. This is a very similar problem to what had been fixed in: commit 0d98ba8d70b0 ("scsi: hpsa: disable device during shutdown") to address https://bugzilla.kernel.org/show_bug.cgi?id=199779. Fixes: 2ba5fbd62b25 ("net/mlx4_core: Handle AER flow properly") Reported-by: Jake Lawrence <lawja@fb.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28Merge branch 'rhashtable-Fix-unprotected-RCU-dereference-in-__rht_ptr'David S. Miller
Herbert Xu says: ==================== rhashtable: Fix unprotected RCU dereference in __rht_ptr This patch series fixes an unprotected dereference in __rht_ptr. The first patch is a minimal fix that does not use the correct RCU markings but is suitable for backport, and the second patch cleans up the RCU markings. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28rhashtable: Restore RCU marking on rhash_lock_headHerbert Xu
This patch restores the RCU marking on bucket_table->buckets as it really does need RCU protection. Its removal had led to a fatal bug. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28rhashtable: Fix unprotected RCU dereference in __rht_ptrHerbert Xu
The rcu_dereference call in rht_ptr_rcu is completely bogus because we've already dereferenced the value in __rht_ptr and operated on it. This causes potential double readings which could be fatal. The RCU dereference must occur prior to the comparison in __rht_ptr. This patch changes the order of RCU dereference so that it is done first and the result is then fed to __rht_ptr. The RCU marking changes have been minimised using casts which will be removed in a follow-up patch. Fixes: ba6306e3f648 ("rhashtable: Remove RCU marking from...") Reported-by: "Gong, Sishuai" <sishuai@purdue.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: ethernet: mtk_eth_soc: Always call mtk_gmac0_rgmii_adjust() for mt7623René van Dorst
Modify mtk_gmac0_rgmii_adjust() so it can always be called. mtk_gmac0_rgmii_adjust() sets-up the TRGMII clocks. Signed-off-by: René van Dorst <opensource@vdorst.com> Signed-off-By: David Woodhouse <dwmw2@infradead.org> Tested-by: Frank Wunderlich <frank-w@public-files.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28Merge tag 'mlx5-fixes-2020-07-28' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5 fixes-2020-07-28 This series introduces some fixes to mlx5 driver. v1->v2: - Drop the "Hold reference on mirred devices" patch, until Or's comments are addressed. - Imporve "Modify uplink state" patch commit message per Or's request. Please pull and let me know if there is any problem. For -Stable: For -stable v4.9 ('net/mlx5e: Fix error path of device attach') For -stable v4.15 ('net/mlx5: Verify Hardware supports requested ptp function on a given pin') For -stable v5.3 ('net/mlx5e: Modify uplink state on interface up/down') For -stable v5.4 ('net/mlx5e: Fix kernel crash when setting vf VLANID on a VF dev') ('net/mlx5: E-switch, Destroy TSAR when fail to enable the mode') For -stable v5.5 ('net/mlx5: E-switch, Destroy TSAR after reload interface') For -stable v5.7 ('net/mlx5: Fix a bug of using ptp channel index as pin index') ==================== Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28Merge branch 'net-lan78xx-fix-NULL-deref-and-memory-leak'David S. Miller
Johan Hovold says: ==================== net: lan78xx: fix NULL deref and memory leak The first two patches fix a NULL-pointer dereference at probe that can be triggered by a malicious device and a small transfer-buffer memory leak, respectively. For another subsystem I would have marked them: Cc: stable@vger.kernel.org # 4.3 The third one replaces the driver's current broken endpoint lookup helper, which could end up accepting incomplete interfaces and whose results weren't even useeren Johan ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: lan78xx: replace bogus endpoint lookupJohan Hovold
Drop the bogus endpoint-lookup helper which could end up accepting interfaces based on endpoints belonging to unrelated altsettings. Note that the returned bulk pipes and interrupt endpoint descriptor were never actually used. Instead the bulk-endpoint numbers are hardcoded to 1 and 2 (matching the specification), while the interrupt- endpoint descriptor was assumed to be the third descriptor created by USB core. Try to bring some order to this by dropping the bogus lookup helper and adding the missing endpoint sanity checks while keeping the interrupt- descriptor assumption for now. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: lan78xx: fix transfer-buffer memory leakJohan Hovold
The interrupt URB transfer-buffer was never freed on disconnect or after probe errors. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: lan78xx: add missing endpoint sanity checkJohan Hovold
Add the missing endpoint sanity check to prevent a NULL-pointer dereference should a malicious device lack the expected endpoints. Note that the driver has a broken endpoint-lookup helper, lan78xx_get_endpoints(), which can end up accepting interfaces in an altsetting without endpoints as long as *some* altsetting has a bulk-in and a bulk-out endpoint. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28usb: hso: check for return value in hso_serial_common_create()Rustam Kovhaev
in case of an error tty_register_device_attr() returns ERR_PTR(), add IS_ERR() check Reported-and-tested-by: syzbot+67b2bd0e34f952d0321e@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=67b2bd0e34f952d0321e Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net/mlx5e: Fix kernel crash when setting vf VLANID on a VF devAlaa Hleihel
After the cited commit, function 'mlx5_eswitch_set_vport_vlan' started to acquire esw->state_lock. However, esw is not defined for VF devices, hence attempting to set vf VLANID on a VF dev will cause a kernel panic. Fix it by moving up the (redundant) esw validation from function '__mlx5_eswitch_set_vport_vlan' since the rest of the callers now have and use a valid esw. For example with vf device eth4: # ip link set dev eth4 vf 0 vlan 0 Trace of the panic: [ 411.409842] BUG: unable to handle page fault for address: 00000000000011b8 [ 411.449745] #PF: supervisor read access in kernel mode [ 411.452348] #PF: error_code(0x0000) - not-present page [ 411.454938] PGD 80000004189c9067 P4D 80000004189c9067 PUD 41899a067 PMD 0 [ 411.458382] Oops: 0000 [#1] SMP PTI [ 411.460268] CPU: 4 PID: 5711 Comm: ip Not tainted 5.8.0-rc4_for_upstream_min_debug_2020_07_08_22_04 #1 [ 411.462447] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 411.464158] RIP: 0010:__mutex_lock+0x4e/0x940 [ 411.464928] Code: fd 41 54 49 89 f4 41 52 53 89 d3 48 83 ec 70 44 8b 1d ee 03 b0 01 65 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 45 85 db 75 0a <48> 3b 7f 60 0f 85 7e 05 00 00 49 8d 45 68 41 56 41 b8 01 00 00 00 [ 411.467678] RSP: 0018:ffff88841fcd74b0 EFLAGS: 00010246 [ 411.468562] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 411.469715] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000001158 [ 411.470812] RBP: ffff88841fcd7550 R08: ffffffffa00fa1ce R09: 0000000000000000 [ 411.471835] R10: ffff88841fcd7570 R11: 0000000000000000 R12: 0000000000000002 [ 411.472862] R13: 0000000000001158 R14: ffffffffa00fa1ce R15: 0000000000000000 [ 411.474004] FS: 00007faee7ca6b80(0000) GS:ffff88846fc00000(0000) knlGS:0000000000000000 [ 411.475237] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 411.476129] CR2: 00000000000011b8 CR3: 000000041909c006 CR4: 0000000000360ea0 [ 411.477260] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 411.478340] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 411.479332] Call Trace: [ 411.479760] ? __nla_validate_parse.part.6+0x57/0x8f0 [ 411.482825] ? mlx5_eswitch_set_vport_vlan+0x3e/0xa0 [mlx5_core] [ 411.483804] mlx5_eswitch_set_vport_vlan+0x3e/0xa0 [mlx5_core] [ 411.484733] mlx5e_set_vf_vlan+0x41/0x50 [mlx5_core] [ 411.485545] do_setlink+0x613/0x1000 [ 411.486165] __rtnl_newlink+0x53d/0x8c0 [ 411.486791] ? mark_held_locks+0x49/0x70 [ 411.487429] ? __lock_acquire+0x8fe/0x1eb0 [ 411.488085] ? rcu_read_lock_sched_held+0x52/0x60 [ 411.488998] ? kmem_cache_alloc_trace+0x16d/0x2d0 [ 411.489759] rtnl_newlink+0x47/0x70 [ 411.490357] rtnetlink_rcv_msg+0x24e/0x450 [ 411.490978] ? netlink_deliver_tap+0x92/0x3d0 [ 411.491631] ? validate_linkmsg+0x330/0x330 [ 411.492262] netlink_rcv_skb+0x47/0x110 [ 411.492852] netlink_unicast+0x1ac/0x270 [ 411.493551] netlink_sendmsg+0x336/0x450 [ 411.494209] sock_sendmsg+0x30/0x40 [ 411.494779] ____sys_sendmsg+0x1dd/0x1f0 [ 411.495378] ? copy_msghdr_from_user+0x5c/0x90 [ 411.496082] ___sys_sendmsg+0x87/0xd0 [ 411.496683] ? lock_acquire+0xb9/0x3a0 [ 411.497322] ? lru_cache_add+0x5/0x170 [ 411.497944] ? find_held_lock+0x2d/0x90 [ 411.498568] ? handle_mm_fault+0xe46/0x18c0 [ 411.499205] ? __sys_sendmsg+0x51/0x90 [ 411.499784] __sys_sendmsg+0x51/0x90 [ 411.500341] do_syscall_64+0x59/0x2e0 [ 411.500938] ? asm_exc_page_fault+0x8/0x30 [ 411.501609] ? rcu_read_lock_sched_held+0x52/0x60 [ 411.502350] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 411.503093] RIP: 0033:0x7faee73b85a7 [ 411.503654] Code: Bad RIP value. Fixes: 0e18134f4f9f ("net/mlx5e: Eswitch, use state_lock to synchronize vlan change") Signed-off-by: Alaa Hleihel <alaa@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5e: Modify uplink state on interface up/downRon Diskin
When setting the PF interface up/down, notify the firmware to update uplink state via MODIFY_VPORT_STATE, when E-Switch is enabled. This behavior will prevent sending traffic out on uplink port when PF is down, such as sending traffic from a VF interface which is still up. Currently when calling mlx5e_open/close(), the driver only sends PAOS command to notify the firmware to set the physical port state to up/down, however, it is not sufficient. When VF is in "auto" state, it follows the uplink state, which was not updated on mlx5e_open/close() before this patch. When switchdev mode is enabled and uplink representor is first enabled, set the uplink port state value back to its FW default "AUTO". Fixes: 63bfd399de55 ("net/mlx5e: Send PAOS command on interface up/down") Signed-off-by: Ron Diskin <rondi@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Moshe Shemesh <moshe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: Query PPS pin operational status before registering itEran Ben Elisha
In a special configuration, a ConnectX6-Dx pin pps-out might be activated when driver is loaded. Fix the driver to always read the operational pin mode when registering it, and advertise it accordingly. Fixes: ee7f12205abc ("net/mlx5e: Implement 1PPS support") Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5e: Fix slab-out-of-bounds in mlx5e_rep_is_lag_netdevRaed Salem
mlx5e_rep_is_lag_netdev is used as first check as part of netdev events handler for bond device of non-uplink representors, this handler can get any netdevice under the same network namespace of mlx5e netdevice. Current code treats the netdev as mlx5e netdev and only later on verifies this, hence causes the following Kasan trace: [15402.744990] ================================================================== [15402.746942] BUG: KASAN: slab-out-of-bounds in mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core] [15402.749009] Read of size 8 at addr ffff880391f3f6b0 by task ovs-vswitchd/5347 [15402.752065] CPU: 7 PID: 5347 Comm: ovs-vswitchd Kdump: loaded Tainted: G B O --------- -t - 4.18.0-g3dcc204d291d-dirty #1 [15402.755349] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [15402.757600] Call Trace: [15402.758968] dump_stack+0x71/0xab [15402.760427] print_address_description+0x6a/0x270 [15402.761969] kasan_report+0x179/0x2d0 [15402.763445] ? mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core] [15402.765121] mlx5e_rep_is_lag_netdev+0xcb/0xf0 [mlx5_core] [15402.766782] mlx5e_rep_esw_bond_netevent+0x129/0x620 [mlx5_core] Fix by deferring the violating access to be post the netdev verify check. Fixes: 7e51891a237f ("net/mlx5e: Use netdev events to set/del egress acl forward-to-vport rule") Signed-off-by: Raed Salem <raeds@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Vu Pham <vuhuong@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: Verify Hardware supports requested ptp function on a given pinEran Ben Elisha
Fix a bug where driver did not verify Hardware pin capabilities for PTP functions. Fixes: ee7f12205abc ("net/mlx5e: Implement 1PPS support") Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Ariel Levkovich <lariel@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: Fix a bug of using ptp channel index as pin indexEran Ben Elisha
On PTP mlx5_ptp_enable(on=0) flow, driver mistakenly used channel index as pin index. After ptp patch marked in fixes tag was introduced, driver can freely call ptp_find_pin() as part of the .enable() callback. Fix driver mlx5_ptp_enable(on=0) flow to always use ptp_find_pin(). With that, Driver will use the correct pin index in mlx5_ptp_enable(on=0) flow. In addition, when initializing the pins, always set channel to zero. As all pins can be attached to all channels, let ptp_set_pinfunc() to move them between the channels. For stable branches, this fix to be applied only on kernels that includes both patches in fixes tag. Otherwise, mlx5_ptp_enable(on=0) will be stuck on pincfg_mux. Fixes: 62582a7ee783 ("ptp: Avoid deadlocks in the programmable pin code.") Fixes: ee7f12205abc ("net/mlx5e: Implement 1PPS support") Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Ariel Levkovich <lariel@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5e: Fix missing cleanup of ethtool steering during rep rx cleanupMaor Dickman
The cited commit add initialization of ethtool steering during representor rx initializations without cleaning it up in representor rx cleanup, this may cause for stale ethtool flows to remain after moving back from switchdev mode to legacy mode. Fixed by calling ethtool steering cleanup during rep rx cleanup. Fixes: 6783e8b29f63 ("net/mlx5e: Init ethtool steering for representors") Signed-off-by: Maor Dickman <maord@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5e: Fix error path of device attachAya Levin
On failure to attach the netdev, fix the rollback by re-setting the device's state back to MLX5E_STATE_DESTROYING. Failing to attach doesn't stop statistics polling via .ndo_get_stats64. In this case, although the device is not attached, it falsely continues to query the firmware for counters. Setting the device's state back to MLX5E_STATE_DESTROYING prevents the firmware counters query. Fixes: 26e59d8077a3 ("net/mlx5e: Implement mlx5e interface attach/detach callbacks") Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: Fix forward to next namespaceMaor Gottlieb
The steering tree is as follow (nic RX as example): --------- |root_ns| --------- | -------------------------------- | | | ---------- ---------- --------- |p(prio)0| | p1 | | pn | ---------- ---------- --------- | | ---------------- --------------- |ns(e.g bypass)| |ns(e.g. lag) | ---------------- --------------- | | | ---- ---- ---- |p0| |p1| |pn| ---- ---- ---- | ---- |FT| ---- find_next_chained_ft(prio) returns the first flow table in the next priority. If prio is a parent of a flow table then it returns the first flow table in the next priority in the same namespace, else if prio is parent of namespace, then it should return the first flow table in the next namespace. Currently if the user requests to forward to next namespace, the code calls to find_next_chained_ft with the prio of the next namespace and not the prio of the namesapce itself. Fixes: 9254f8ed15b6 ("net/mlx5: Add support in forward to namespace") Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: E-switch, Destroy TSAR after reload interfaceParav Pandit
When eswitch offloads is enabled, TSAR is created before reloading the interfaces. However when eswitch offloads mode is disabled, TSAR is disabled before reloading the interfaces. To keep the eswitch enable/disable sequence as mirror, destroy TSAR after reloading the interfaces. Fixes: 1bd27b11c1df ("net/mlx5: Introduce E-switch QoS management") Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28net/mlx5: E-switch, Destroy TSAR when fail to enable the modeParav Pandit
When either esw_legacy_enable() or esw_offloads_enable() fails, code missed to destroy the created TSAR. Hence, add the missing call to destroy the TSAR. Fixes: 610090ebce92 ("net/mlx5: E-switch, Initialize TSAR Qos hardware block before its user vports") Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-07-28Merge branch 'hns3-fixes'David S. Miller
Huazhong Tan says: ==================== net: hns3: fixes for -net There are some bugfixes for the HNS3 ethernet driver. patch#1 fixes a desc filling bug, patch#2 fixes a false TX timeout issue, and patch#3~#5 fixes some bugs related to VLAN and FD. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: hns3: fix for VLAN config when reset failedGuojia Liao
When device is resetting or reset failed, firmware is unable to handle mailbox. VLAN should not be configured in this case. Fixes: fe4144d47eef ("net: hns3: sync VLAN filter entries when kill VLAN ID failed") Signed-off-by: Guojia Liao <liaoguojia@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: hns3: fix aRFS FD rules leftover after add a user FD ruleGuojia Liao
When user had created a FD rule, all the aRFS rules should be clear up. HNS3 process flow as below: 1.get spin lock of fd_ruls_list 2.clear up all aRFS rules 3.release lock 4.get spin lock of fd_ruls_list 5.creat a rules 6.release lock; There is a short period of time between step 3 and step 4, which would creatting some new aRFS FD rules if driver was receiving packet. So refactor the fd_rule_lock to fix it. Fixes: 441228875706 ("net: hns3: refine the flow director handle") Signed-off-by: Guojia Liao <liaoguojia@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: hns3: add reset check for VF updating port based VLANJian Shen
Currently hclgevf_update_port_base_vlan_info() may be called when VF is resetting, which may cause hns3_nic_net_open() being called twice unexpectedly. So fix it by adding a reset check for it, and extend critical region for rntl_lock in hclgevf_update_port_base_vlan_info(). Fixes: 92f11ea177cd ("net: hns3: fix set port based VLAN issue for VF") Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28net: hns3: fix a TX timeout issueYonglong Liu
When the queue depth and queue parameters are modified, there is a low probability that TX timeout occurs. The two operations cause the link to be down or up when the watchdog is still working. All queues are stopped when the link is down. After the carrier is on, all queues are woken up. If the watchdog detects the link between the carrier on and wakeup queues, a false TX timeout occurs. So fix this issue by modifying the sequence of carrier on and queue wakeup, which is symmetrical to the link down action. Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit (git 2.34.1) at 2025-07-16 03:10:24 +0000