crypto: shash - Fix a sleep-in-atomic bug in shash_setkey_unaligned
[ Upstream commit 9039f3ef446e9ffa200200c934f049add9e58426 ]
The SCTP program may sleep under a spinlock, and the function call path is:
sctp_generate_t3_rtx_event (acquire the spinlock)
sctp_do_sm
sctp_side_effects
sctp_cmd_interpreter
sctp_make_init_ack
sctp_pack_cookie
crypto_shash_setkey
shash_setkey_unaligned
kmalloc(GFP_KERNEL)
For the same reason, the orinoco driver may sleep in interrupt handler,
and the function call path is:
orinoco_rx_isr_tasklet
orinoco_rx
orinoco_mic
crypto_shash_setkey
shash_setkey_unaligned
kmalloc(GFP_KERNEL)
To fix it, GFP_KERNEL is replaced with GFP_ATOMIC.
This bug is found by my static analysis tool and my code review.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
1 file changed