diff options
| author | Li Zhijian <lizhijian@fujitsu.com> | 2024-12-31 09:34:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-09 13:33:41 +0100 |
| commit | 6ffb5c1885195ae5211a12b4acd2d51843ca41b0 (patch) | |
| tree | 2ca2158814bc6bc6e68e211ff2c4a14b8c6666c9 /scripts/patch-kernel | |
| parent | e6e6882a1590cbdaca77a31a02f4954327237e14 (diff) | |
| download | linux-6ffb5c1885195ae5211a12b4acd2d51843ca41b0.tar.gz linux-6ffb5c1885195ae5211a12b4acd2d51843ca41b0.tar.bz2 linux-6ffb5c1885195ae5211a12b4acd2d51843ca41b0.zip | |
RDMA/rtrs: Ensure 'ib_sge list' is accessible
[ Upstream commit fb514b31395946022f13a08e06a435f53cf9e8b3 ]
Move the declaration of the 'ib_sge list' variable outside the
'always_invalidate' block to ensure it remains accessible for use
throughout the function.
Previously, 'ib_sge list' was declared within the 'always_invalidate'
block, limiting its accessibility, then caused a
'BUG: kernel NULL pointer dereference'[1].
? __die_body.cold+0x19/0x27
? page_fault_oops+0x15a/0x2d0
? search_module_extables+0x19/0x60
? search_bpf_extables+0x5f/0x80
? exc_page_fault+0x7e/0x180
? asm_exc_page_fault+0x26/0x30
? memcpy_orig+0xd5/0x140
rxe_mr_copy+0x1c3/0x200 [rdma_rxe]
? rxe_pool_get_index+0x4b/0x80 [rdma_rxe]
copy_data+0xa5/0x230 [rdma_rxe]
rxe_requester+0xd9b/0xf70 [rdma_rxe]
? finish_task_switch.isra.0+0x99/0x2e0
rxe_sender+0x13/0x40 [rdma_rxe]
do_task+0x68/0x1e0 [rdma_rxe]
process_one_work+0x177/0x330
worker_thread+0x252/0x390
? __pfx_worker_thread+0x10/0x10
This change ensures the variable is available for subsequent operations
that require it.
[1] https://lore.kernel.org/linux-rdma/6a1f3e8f-deb0-49f9-bc69-a9b03ecfcda7@fujitsu.com/
Fixes: 9cb837480424 ("RDMA/rtrs: server: main functionality")
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Link: https://patch.msgid.link/20241231013416.1290920-1-lizhijian@fujitsu.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions