diff options
| author | Nam Cao <namcao@linutronix.de> | 2025-08-04 12:07:27 +0200 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-09-01 13:39:39 +0530 |
| commit | 3443ff3be6e59b80d74036bb39f5b6409eb23cc9 (patch) | |
| tree | 3cd77d98c6b90daccfee3d9e3abee43d1a49f2c2 /scripts/gdb/linux/mm.py | |
| parent | 4f61d54d2245c15b23ad78a89f854fb2496b6216 (diff) | |
powerpc/pseries/msi: Fix potential underflow and leak issue
pseries_irq_domain_alloc() allocates interrupts at parent's interrupt
domain. If it fails in the progress, all allocated interrupts are
freed.
The number of successfully allocated interrupts so far is stored
"i". However, "i - 1" interrupts are freed. This is broken:
- One interrupt is not be freed
- If "i" is zero, "i - 1" wraps around
Correct the number of freed interrupts to 'i'.
Fixes: a5f3d2c17b07 ("powerpc/pseries/pci: Add MSI domains")
Signed-off-by: Nam Cao <namcao@linutronix.de>
Cc: stable@vger.kernel.org
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/a980067f2b256bf716b4cd713bc1095966eed8cd.1754300646.git.namcao@linutronix.de
Diffstat (limited to 'scripts/gdb/linux/mm.py')
0 files changed, 0 insertions, 0 deletions