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[DragonFlyBSD - Bug #2269] Panic on KKASSERT((c->c_flags & (CALLOUT_PENDING|CALLOUT_ACTIVE))

From: "G. Isenmann via Redmine" <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 28 Feb 2012 01:00:34 -0800

Issue #2269 has been updated by G. Isenmann.

Haven't seen this panic with above fix, while using the affected system regularly during the last five weeks.

Bug #2269: Panic on KKASSERT((c->c_flags & (CALLOUT_PENDING|CALLOUT_ACTIVE))

Author: Magliano Andrea
Status: Feedback
Priority: Normal
Target version: 

On v2.13.0.784.gc1745-DEVELOPMENT, x86_64

#0  _get_mycpu () at ./machine/thread.h:69
#1  md_dumpsys (di=<optimized out>)
    at /usr/src/sys/platform/pc64/x86_64/dump_machdep.c:263
#2  0xffffffff802bd915 in dumpsys () at /usr/src/sys/kern/kern_shutdown.c:925
#3  0xffffffff802bdf7b in boot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:387
#4  0xffffffff802be232 in panic (
    fmt=0xffffffff8051bdf0 "assertion \"%s\" failed in %s at %s:%u")
    at /usr/src/sys/kern/kern_shutdown.c:831
#5  0xffffffff802dbeb7 in callout_stop_sync (c=0xffffffe065c82990)
    at /usr/src/sys/kern/kern_timeout.c:519
#6  0xffffffff802dadd0 in sys_setitimer (uap=0xffffffe066028b68)
    at /usr/src/sys/kern/kern_time.c:762
#7  0xffffffff804de981 in syscall2 (frame=0xffffffe066028c18)
    at /usr/src/sys/platform/pc64/x86_64/trap.c:1248
#8  0xffffffff804c806b in Xfast_syscall ()
    at /usr/src/sys/platform/pc64/x86_64/exception.S:323
#9  0x000000000000002b in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Get dump from

I'm still experiencing regularly issue 2092, it could be related to it as ahci_ata_cmd_done() calls callout_stop_sync() (which panic comes from)

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