Bart Van Assche
0874f8ec9b
qla2xxx: Fix rwlock recursion ...
This patch fixes the following kernel bug:
kernel:BUG: rwlock recursion on CPU#2, insmod/39333, ffff8803e998cb28
kernel: Call Trace:
kernel: [<ffffffff812bce44>] dump_stack+0x48/0x64
kernel: [<ffffffff810a8047>] rwlock_bug+0x67/0x70
kernel: [<ffffffff810a833a>] do_raw_write_lock+0x8a/0xa0
kernel: [<ffffffff815f3033>] _raw_write_lock_irqsave+0x63/0x80
kernel: [<ffffffffa08087c8>] qla82xx_rd_32+0xe8/0x140 [qla2xxx]
kernel: [<ffffffffa0808845>] qla82xx_crb_win_lock+0x25/0x60 [qla2xxx]
kernel: [<ffffffffa0808976>] qla82xx_wr_32+0xf6/0x150 [qla2xxx]
kernel: [<ffffffffa0808ac0>] qla82xx_disable_intrs+0x50/0x80 [qla2xxx]
kernel: [<ffffffffa080630a>] qla82xx_reset_chip+0x1a/0x20 [qla2xxx]
kernel: [<ffffffffa07d6ef2>] qla2x00_initialize_adapter+0x132/0x420 [qla2xxx]
kernel: [<ffffffffa08087c8>] qla82xx_rd_32+0xe8/0x140 [qla2xxx]
kernel: [<ffffffffa0808845>] qla82xx_crb_win_lock+0x25/0x60 [qla2xxx]
kernel: [<ffffffffa0808976>] qla82xx_wr_32+0xf6/0x150 [qla2xxx]
kernel: [<ffffffffa0808ac0>] qla82xx_disable_intrs+0x50/0x80 [qla2xxx]
kernel: [<ffffffffa080630a>] qla82xx_reset_chip+0x1a/0x20 [qla2xxx]
kernel: [<ffffffffa07d6ef2>] qla2x00_initialize_adapter+0x132/0x420 [qla2xxx]
kernel: [<ffffffffa07c964e>] qla2x00_probe_one+0xefe/0x2130 [qla2xxx]
kernel: [<ffffffff8130052c>] local_pci_probe+0x4c/0xa0
kernel: [<ffffffff81300603>] pci_call_probe+0x83/0xa0
kernel: [<ffffffff813008cf>] pci_device_probe+0x7f/0xb0
kernel: [<ffffffff813e2e83>] really_probe+0x133/0x390
kernel: [<ffffffff813e3139>] driver_probe_device+0x59/0xd0
kernel: [<ffffffff813e3251>] __driver_attach+0xa1/0xb0
kernel: [<ffffffff813e0cdd>] bus_for_each_dev+0x8d/0xb0
kernel: [<ffffffff813e28ee>] driver_attach+0x1e/0x20
kernel: [<ffffffff813e2252>] bus_add_driver+0x1d2/0x290
kernel: [<ffffffff813e3970>] driver_register+0x60/0xe0
kernel: [<ffffffff813009e4>] __pci_register_driver+0x64/0x70
kernel: [<ffffffffa04bc1cb>] qla2x00_module_init+0x1cb/0x21b [qla2xxx]
kernel: [<ffffffff8100027d>] do_one_initcall+0xad/0x1c0
kernel: [<ffffffff810e2859>] do_init_module+0x69/0x210
kernel: [<ffffffff810e4e5c>] load_module+0x5cc/0x750
kernel: [<ffffffff810e5162>] SyS_init_module+0x92/0xc0
kernel: [<ffffffff815f37d7>] entry_SYSCALL_64_fastpath+0x12/0x6f
Fixes: 8dfa4b5a9b44 ("qla2xxx: Fix sparse annotation")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reported-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Tested-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Xose Vazquez Perez <xose.vazquez@gmail.com>
Cc: stable <stable@vger.kernel.org> # v4.3+
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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0874f8ec9b