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| author | Ankit Khushwaha <[email protected]> | 2025-10-08 17:25:16 +0000 |
|---|---|---|
| committer | Steven Rostedt (Google) <[email protected]> | 2025-10-09 01:48:58 +0000 |
| commit | de4cbd704731778a2dc833ce5a24b38e5d672c05 (patch) | |
| tree | fb644a9a8e60d01a860da4229aff405b5d483da0 /lib/mpi/mpi-inline.c | |
| parent | tracing: Fix irqoff tracers on failure of acquiring calltime (diff) | |
| download | kernel-de4cbd704731778a2dc833ce5a24b38e5d672c05.tar.gz kernel-de4cbd704731778a2dc833ce5a24b38e5d672c05.zip | |
ring buffer: Propagate __rb_map_vma return value to caller
The return value from `__rb_map_vma()`, which rejects writable or
executable mappings (VM_WRITE, VM_EXEC, or !VM_MAYSHARE), was being
ignored. As a result the caller of `__rb_map_vma` always returned 0
even when the mapping had actually failed, allowing it to proceed
with an invalid VMA.
Cc: [email protected]
Cc: Masami Hiramatsu <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Link: https://lore.kernel.org/[email protected]
Fixes: 117c39200d9d7 ("ring-buffer: Introducing ring-buffer mapping functions")
Reported-by: [email protected]
Closes: https://syzkaller.appspot.com/bug?id=194151be8eaebd826005329b2e123aecae714bdb
Signed-off-by: Ankit Khushwaha <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-inline.c')
0 files changed, 0 insertions, 0 deletions