Kernel panics in dfp_ioctl32()
Issue
- Either of below errors is observed at the time of the occurrence of kernel panic.
Kernel panic - not syncing: IOCTL ERROR
Kernel panic - not syncing: DNCWARE Disk WatchDog: Timeout error was detected.
Kernel panic - not syncing: DNCWARE Disk WatchDog: I/O error was detected.
crash> bt
PID: 17667 TASK: ffff8105a9ea7820 CPU: 3 COMMAND: "hadkwd"
#0 [ffff8105a1181cf0] crash_kexec at ffffffff800b0938
#1 [ffff8105a1181db0] panic at ffffffff80093987
#2 [ffff8105a1181ea0] dfp_ioctl32 at ffffffff886941bd [dfp]
#3 [ffff8105a1181f20] compat_sys_ioctl at ffffffff800ff5f4
#4 [ffff8105a1181f80] sysenter_do_call at ffffffff800614b5
RIP: 00000000ffffe410 RSP: 00000000ff8c596c RFLAGS: 00000296
RAX: ffffffffffffffda RBX: ffffffff800614b5 RCX: 00000000ffffeeee
RDX: 00000000ff8c5b34 RSI: 00000000004f9ca0 RDI: 0000000000000000
RBP: 0000000000000000 R8: 0000000000000000 R9: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ff8c5b78
ORIG_RAX: 0000000000000036 CS: 0023 SS: 002b
Environment
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- DNCWARE (dfp.ko module)
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