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    • Maurizio Lombardi's avatar
      fnic: move printk()s outside of the critical code section. · 14cee5b4
      Maurizio Lombardi authored
      
      
      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: default avatarMaurizio Lombardi <mlombard@redhat.com>
      Reviewed-by: default avatarLaurence Oberman <loberman@redhat.com>
      Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
      14cee5b4
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