diff options
| author | Dmitry Bogdanov <d.bogdanov@yadro.com> | 2023-03-18 20:56:17 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-30 12:57:49 +0100 |
| commit | 4621e24c9257c6379343bf0c11b473817cf7edcd (patch) | |
| tree | 4709639688307e877d9b0636b7f8ab93252a5166 /lib | |
| parent | 2ea171230a39e50ca6b3d6590a3436a57df8758f (diff) | |
| download | linux-stable-4621e24c9257c6379343bf0c11b473817cf7edcd.tar.gz linux-stable-4621e24c9257c6379343bf0c11b473817cf7edcd.tar.bz2 linux-stable-4621e24c9257c6379343bf0c11b473817cf7edcd.zip | |
scsi: target: iscsit: Free cmds before session free
[ Upstream commit d8990b5a4d065f38f35d69bcd627ec5a7f8330ca ]
Commands from recovery entries are freed after session has been closed.
That leads to use-after-free at command free or NPE with such call trace:
Time2Retain timer expired for SID: 1, cleaning up iSCSI session.
BUG: kernel NULL pointer dereference, address: 0000000000000140
RIP: 0010:sbitmap_queue_clear+0x3a/0xa0
Call Trace:
target_release_cmd_kref+0xd1/0x1f0 [target_core_mod]
transport_generic_free_cmd+0xd1/0x180 [target_core_mod]
iscsit_free_cmd+0x53/0xd0 [iscsi_target_mod]
iscsit_free_connection_recovery_entries+0x29d/0x320 [iscsi_target_mod]
iscsit_close_session+0x13a/0x140 [iscsi_target_mod]
iscsit_check_post_dataout+0x440/0x440 [iscsi_target_mod]
call_timer_fn+0x24/0x140
Move cleanup of recovery enrties to before session freeing.
Reported-by: Forza <forza@tnonline.net>
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20230319015620.96006-7-michael.christie@oracle.com
Reviewed-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions