linux/drivers/scsi/fnic
Maurizio Lombardi 14cee5b4de fnic: move printk()s outside of the critical code section.
This patch moves a printk() outside of the code section where interrupt
are disabled. In some cases a flood of error messages may cause a kernel
panic.  It also removes one of the printk()s because the same error
message was printed twice.

[709686.317197] Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 12
[709686.317200] CPU: 12 PID: 1963 Comm: systemd-journal Tainted: GF          O--------------   3.10.0-229.el7.x86_64 #1
[709686.317201] Hardware name: Cisco Systems Inc UCSB-B200-M3/UCSB-B200-M3, BIOS B200M3.2.2.3.6.030620151309 03/06/2015
[709686.317206]  ffffffff8182b2e8 00000000392722ba ffff88046fcc5c48 ffffffff81603f36
[709686.317209]  ffff88046fcc5cc8 ffffffff815fd7da 0000000000000010 ffff88046fcc5cd8
[709686.317211]  ffff88046fcc5c78 00000000392722ba ffff88046fcc5c88 000000000000000c
[709686.317212] Call Trace:
[709686.317221]  <NMI>  [<ffffffff81603f36>] dump_stack+0x19/0x1b
[709686.317223]  [<ffffffff815fd7da>] panic+0xd8/0x1e7
[709686.317227]  [<ffffffff8110a760>] ? watchdog_enable_all_cpus.part.2+0x40/0x40
[709686.317229]  [<ffffffff8110a822>] watchdog_overflow_callback+0xc2/0xd0
[709686.317233]  [<ffffffff8114c901>] __perf_event_overflow+0xa1/0x250
[709686.317235]  [<ffffffff8114d404>] perf_event_overflow+0x14/0x20
[709686.317239]  [<ffffffff810301fd>] intel_pmu_handle_irq+0x1fd/0x410
[709686.317242]  [<ffffffff811908d1>] ? unmap_kernel_range_noflush+0x11/0x20
[709686.317246]  [<ffffffff81373574>] ? ghes_copy_tofrom_phys+0x124/0x210
[709686.317249]  [<ffffffff8160cfcb>] perf_event_nmi_handler+0x2b/0x50
[709686.317251]  [<ffffffff8160c719>] nmi_handle.isra.0+0x69/0xb0
[709686.317252]  [<ffffffff8160c830>] do_nmi+0xd0/0x340
[709686.317256]  [<ffffffff8160bb71>] end_repeat_nmi+0x1e/0x2e
[709686.317260]  [<ffffffff812e24fd>] ? memcpy+0xd/0x110
[709686.317263]  [<ffffffff812e24fd>] ? memcpy+0xd/0x110
[709686.317265]  [<ffffffff812e24fd>] ? memcpy+0xd/0x110
[709686.317269]  <<EOE>>  [<ffffffff8132c297>] ? vgacon_scroll+0x2d7/0x330
[709686.317273]  [<ffffffff813a086c>] scrup+0xfc/0x110
[709686.317275]  [<ffffffff813a0920>] lf+0xa0/0xb0
[709686.317278]  [<ffffffff813a1b32>] vt_console_print+0x2d2/0x420
[709686.317283]  [<ffffffff8106f4a1>] call_console_drivers.constprop.15+0x91/0xf0
[709686.317287]  [<ffffffff8107069f>] console_unlock+0x3bf/0x400
[709686.317291]  [<ffffffff81070996>] vprintk_emit+0x2b6/0x530
[709686.317294]  [<ffffffff815fd961>] printk_emit+0x44/0x5b
[709686.317297]  [<ffffffff81070d98>] devkmsg_writev+0x158/0x1d0
[709686.317303]  [<ffffffff811c5ef9>] do_sync_readv_writev+0x79/0xd0
[709686.317307]  [<ffffffff811c73ee>] do_readv_writev+0xce/0x260
[709686.317310]  [<ffffffff811c8d18>] ? __sb_start_write+0x58/0x110
[709686.317314]  [<ffffffff811c7615>] vfs_writev+0x35/0x60
[709686.317318]  [<ffffffff811c776c>] SyS_writev+0x5c/0xd0
[709686.317322]  [<ffffffff81613da9>] system_call_fastpath+0x16/0x1b

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-03-18 15:28:17 -04:00
..
Makefile [SCSI] fnic: Fnic Trace Utility 2013-02-22 17:32:07 +00:00
cq_desc.h
cq_enet_desc.h
cq_exch_desc.h
fcpio.h
fnic.h fnic: Use the local variable instead of I/O flag to acquire io_req_lock in fnic_queuecommand() to avoid deadloack 2015-08-18 08:11:23 -07:00
fnic_attrs.c
fnic_debugfs.c x86/mm: Decouple <linux/vmalloc.h> from <asm/io.h> 2015-06-03 12:02:00 +02:00
fnic_fcs.c fnic: check pci_map_single() return value 2015-10-27 11:05:45 +09:00
fnic_fip.h [SCSI] fnic: FIP VLAN Discovery Feature Support 2013-05-02 07:30:40 -07:00
fnic_io.h [SCSI] fnic: New debug flags and debug log messages 2013-02-22 17:31:09 +00:00
fnic_isr.c fnic: Use pci_enable_msix_exact() instead of pci_enable_msix() 2014-07-29 08:38:23 -04:00
fnic_main.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
fnic_res.c
fnic_res.h
fnic_scsi.c fnic: move printk()s outside of the critical code section. 2016-03-18 15:28:17 -04:00
fnic_stats.h [SCSI] fnic: Fnic Statistics Collection 2013-10-25 09:57:57 +01:00
fnic_trace.c x86/mm: Decouple <linux/vmalloc.h> from <asm/io.h> 2015-06-03 12:02:00 +02:00
fnic_trace.h fnic: fnic Control Path Trace Utility 2014-05-19 13:33:00 +02:00
rq_enet_desc.h
vnic_cq.c
vnic_cq.h
vnic_cq_copy.h
vnic_dev.c [SCSI] fnic: FIP VLAN Discovery Feature Support 2013-05-02 07:30:40 -07:00
vnic_dev.h [SCSI] fnic: FIP VLAN Discovery Feature Support 2013-05-02 07:30:40 -07:00
vnic_devcmd.h [SCSI] fnic: FIP VLAN Discovery Feature Support 2013-05-02 07:30:40 -07:00
vnic_intr.c
vnic_intr.h
vnic_nic.h
vnic_resource.h
vnic_rq.c
vnic_rq.h
vnic_scsi.h [SCSI] fnic: fnic Driver Tuneables Exposed through CLI 2013-09-11 15:59:25 -07:00
vnic_stats.h
vnic_wq.c
vnic_wq.h
vnic_wq_copy.c
vnic_wq_copy.h
wq_enet_desc.h