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| author | Quinn Tran <qutran@marvell.com> | 2021-03-29 01:52:22 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-11 14:47:26 +0200 |
| commit | 47ac226199f09bb340f6d6ddf02b29e2bb644b6f (patch) | |
| tree | cff901b5de6db73f28d47cff21ad4d4faac30037 /drivers/mmc | |
| parent | 1d7935fd022dcb2c6422d23b365f356a3814781b (diff) | |
| download | kernel_replicant_linux-47ac226199f09bb340f6d6ddf02b29e2bb644b6f.tar.gz kernel_replicant_linux-47ac226199f09bb340f6d6ddf02b29e2bb644b6f.tar.bz2 kernel_replicant_linux-47ac226199f09bb340f6d6ddf02b29e2bb644b6f.zip | |
scsi: qla2xxx: Fix use after free in bsg
[ Upstream commit 2ce35c0821afc2acd5ee1c3f60d149f8b2520ce8 ]
On bsg command completion, bsg_job_done() was called while qla driver
continued to access the bsg_job buffer. bsg_job_done() would free up
resources that ended up being reused by other task while the driver
continued to access the buffers. As a result, driver was reading garbage
data.
localhost kernel: BUG: KASAN: use-after-free in sg_next+0x64/0x80
localhost kernel: Read of size 8 at addr ffff8883228a3330 by task swapper/26/0
localhost kernel:
localhost kernel: CPU: 26 PID: 0 Comm: swapper/26 Kdump:
loaded Tainted: G OE --------- - - 4.18.0-193.el8.x86_64+debug #1
localhost kernel: Hardware name: HP ProLiant DL360
Gen9/ProLiant DL360 Gen9, BIOS P89 08/12/2016
localhost kernel: Call Trace:
localhost kernel: <IRQ>
localhost kernel: dump_stack+0x9a/0xf0
localhost kernel: print_address_description.cold.3+0x9/0x23b
localhost kernel: kasan_report.cold.4+0x65/0x95
localhost kernel: debug_dma_unmap_sg.part.12+0x10d/0x2d0
localhost kernel: qla2x00_bsg_sp_free+0xaf6/0x1010 [qla2xxx]
Link: https://lore.kernel.org/r/20210329085229.4367-6-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mmc')
0 files changed, 0 insertions, 0 deletions