Files
linux/crypto
Jia-Ju Bai 434c01e08d crypto: shash - Fix a sleep-in-atomic bug in shash_setkey_unaligned
[ Upstream commit 9039f3ef44 ]

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>
2023-05-15 09:15:12 +09:00
..
2017-11-15 15:53:18 +01:00
2016-07-18 17:35:39 +08:00
2016-07-18 17:35:44 +08:00
2017-11-24 08:33:41 +01:00
2016-08-16 17:16:49 +08:00