diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2025-03-25 08:57:10 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2025-03-31 12:20:39 +0200 |
| commit | af6bfcd1698d822ab6a2d543b884b3eedc8c7d82 (patch) | |
| tree | 2cde6cdc8802c63e04309823daa1c14f841aae3d /arch | |
| parent | 1018424ace7ed6dee9ddc36256162250017e4401 (diff) | |
s390/mm: Dump fault info in case of low address protection fault
In case of an unexpected low address protection fault in user mode dump
fault info to make debugging a bit easier. At least the teid is valid,
while dumping the page table is racy, since no lock is held.
But it might still give some hints.
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/mm/fault.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 31a763e05287..da84ff6770de 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -376,6 +376,7 @@ void do_protection_exception(struct pt_regs *regs) if (unlikely(!teid.b61)) { if (user_mode(regs)) { /* Low-address protection in user mode: cannot happen */ + dump_fault_info(regs); die(regs, "Low-address protection"); } /* |