System crash at bdi_writeback_thread with 3rd party module CyProtectDrv enabled
Issue
-
System crashes frequently
crash> bt PID: 165202 TASK: ffff8802baa92ab0 CPU: 0 COMMAND: "flush-253:42" #0 [ffff8803e7d67a60] machine_kexec at ffffffff810417ab #1 [ffff8803e7d67ac0] crash_kexec at ffffffff810d79c2 #2 [ffff8803e7d67b90] oops_end at ffffffff81560310 #3 [ffff8803e7d67bc0] no_context at ffffffff8105578b #4 [ffff8803e7d67c10] __bad_area_nosemaphore at ffffffff81055a15 #5 [ffff8803e7d67c60] bad_area_nosemaphore at ffffffff81055ae3 #6 [ffff8803e7d67c70] __do_page_fault at ffffffff810561fc #7 [ffff8803e7d67d90] do_page_fault at ffffffff815622ce #8 [ffff8803e7d67dc0] page_fault at ffffffff8155f265 [exception RIP: bdi_writeback_thread+0x61] RIP: ffffffff811d14b1 RSP: ffff8803e7d67e70 RFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8804378852e0 RCX: 0000000000000000 RDX: 00000001018d6230 RSI: 0000000000000000 RDI: ffff8802baa92ab0 RBP: ffff8803e7d67ee0 R8: ffff8803e7d64000 R9: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8802baa92ab0 R14: 0000000000000178 R15: 0000000000000001 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #9 [ffff8803e7d67ee8] kthread at ffffffff810abd70 #10 [ffff8803e7d67f48] kernel_thread at ffffffff81567820
Environment
- Red Hat Enterprise Linux 6.10
- kernel-2.6.32-754.50.1.el6.x86_64
- Third party module
- CyProtectDrv
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