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The testcase # chchp -v 0 0.da && sleep 59 && chchp -v 1 0.da results in this deadlock situation: STACK TRACE FOR TASK: 0x7e9a2048 (zfcperp0.0.c613) 0 schedule+816 [0x356b3c] 1 schedule_timeout+172 [0x357340] 2 wait_for_common+192 [0x3565fc] 3 flush_cpu_workqueue+116 [0x52af0] 4 flush_workqueue+116 [0x533b8] 5 fc_remote_port_add+64 [0x1c83ec] 6 zfcp_erp_thread+4534 [0x26585a] 7 kernel_thread_starter+6 [0x195d2] STACK TRACE FOR TASK: 0x7f8ec048 (fc_wq_0) 0 schedule+816 [0x356b3c] 1 zfcp_erp_wait+104 [0x264568] 2 zfcp_scsi_slave_destroy+64 [0x261b24] 3 __scsi_remove_device+154 [0x1c24ba] 4 scsi_remove_device+62 [0x1c2512] 5 __scsi_remove_target+198 [0x1c25ea] 6 __remove_child+58 [0x1c26d6] 7 device_for_each_child+66 [0x1ab566] 8 scsi_remove_target+98 [0x1c268a] 9 run_workqueue+200 [0x5272c] 10 worker_thread+146 [0x52882] 11 kthread+140 [0x58360] 12 kernel_thread_starter+6 [0x195d2] Remove the zfcp_erp_wait call that is not required here to prevent the deadlock situation. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> |
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| .. | ||
| block | ||
| char | ||
| cio | ||
| crypto | ||
| net | ||
| scsi | ||
| ebcdic.c | ||
| Makefile | ||
| s390_rdev.c | ||
| s390mach.c | ||
| s390mach.h | ||
| sysinfo.c | ||