diff options
| author | Florian Westphal <[email protected]> | 2022-09-26 17:16:50 +0200 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2022-09-30 18:46:31 -0700 |
| commit | 30c19366636f72515679aa10dad61a4d988d4c9a (patch) | |
| tree | 80a930c7809c93e8594745dc4fa62de8237e5e6f /lib/mpi/mpi-sub-ui.c | |
| parent | b674deddeb49fd37b8f20a15b658abde6671e2a8 (diff) | |
mm: fix BUG splat with kvmalloc + GFP_ATOMIC
Martin Zaharinov reports BUG with 5.19.10 kernel:
kernel BUG at mm/vmalloc.c:2437!
invalid opcode: 0000 [#1] SMP
CPU: 28 PID: 0 Comm: swapper/28 Tainted: G W O 5.19.9 #1
[..]
RIP: 0010:__get_vm_area_node+0x120/0x130
__vmalloc_node_range+0x96/0x1e0
kvmalloc_node+0x92/0xb0
bucket_table_alloc.isra.0+0x47/0x140
rhashtable_try_insert+0x3a4/0x440
rhashtable_insert_slow+0x1b/0x30
[..]
bucket_table_alloc uses kvzalloc(GPF_ATOMIC). If kmalloc fails, this now
falls through to vmalloc and hits code paths that assume GFP_KERNEL.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: a421ef303008 ("mm: allow !GFP_KERNEL allocations for kvmalloc")
Signed-off-by: Florian Westphal <[email protected]>
Suggested-by: Michal Hocko <[email protected]>
Link: https://lore.kernel.org/linux-mm/Yy3MS2uhSgjF47dy@pc636/T/#t
Acked-by: Michal Hocko <[email protected]>
Reported-by: Martin Zaharinov <[email protected]>
Cc: Uladzislau Rezki (Sony) <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-sub-ui.c')
0 files changed, 0 insertions, 0 deletions