diff options
| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-02-14 10:56:30 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-15 09:57:13 +0800 |
| commit | 944690cdb5f48d03842365b7359fe090d6c2b1fa (patch) | |
| tree | 1900f3bffd82a54bfaeb813143074068a44ca1b9 /arch/openrisc/TODO.openrisc | |
| parent | bb4a21dcb6fb57892eea7c941fdfd57e55ba5dbe (diff) | |
IB/srp: Avoid that duplicate responses trigger a kernel bug
commit 6cb72bc1b40bb2c1750ee7a5ebade93bed49a5fb upstream.
After srp_process_rsp() returns there is a short time during which
the scsi_host_find_tag() call will return a pointer to the SCSI
command that is being completed. If during that time a duplicate
response is received, avoid that the following call stack appears:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: srp_recv_done+0x450/0x6b0 [ib_srp]
Oops: 0000 [#1] SMP
CPU: 10 PID: 0 Comm: swapper/10 Not tainted 4.10.0-rc7-dbg+ #1
Call Trace:
<IRQ>
__ib_process_cq+0x4b/0xd0 [ib_core]
ib_poll_handler+0x1d/0x70 [ib_core]
irq_poll_softirq+0xba/0x120
__do_softirq+0xba/0x4c0
irq_exit+0xbe/0xd0
smp_apic_timer_interrupt+0x38/0x50
apic_timer_interrupt+0x90/0xa0
</IRQ>
RIP: srp_recv_done+0x450/0x6b0 [ib_srp] RSP: ffff88046f483e20
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Israel Rukshin <israelr@mellanox.com>
Cc: Max Gurtovoy <maxg@mellanox.com>
Cc: Laurence Oberman <loberman@redhat.com>
Cc: Steve Feeley <Steve.Feeley@sandisk.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/openrisc/TODO.openrisc')
0 files changed, 0 insertions, 0 deletions