Bart Van Assche 6cb72bc1b4 IB/srp: Avoid that duplicate responses trigger a kernel bug ... 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> Cc: <stable@vger.kernel.org> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>		2017-02-19 09:51:52 -05:00
..
ipoib	IB/ipoib: Remove redudant label	2017-02-19 09:18:46 -05:00
iser	IB/iser: Protect completion context active_qps update	2017-02-19 09:18:31 -05:00
isert	IB/isert: fix spelling mistake: "teminating" -> "terminating"	2017-01-24 16:20:37 -05:00
srp	IB/srp: Avoid that duplicate responses trigger a kernel bug	2017-02-19 09:51:52 -05:00
srpt	IB/srpt: Accept GUIDs as port names	2017-01-27 14:31:50 -05:00
Makefile	IB: Allow build of hw/ and ulp/ subdirectories independently	2014-06-02 14:51:12 -07:00