Date: Mon, 12 Oct 2015 09:57:38 +0200 (CEST) From: Christian Kratzer <ck-lists@cksoft.de> To: Rick Macklem <rmacklem@uoguelph.ca> Cc: John Baldwin <jhb@freebsd.org>, freebsd-stable@freebsd.org Subject: Re: smbfs crashes since approx. 10.1-RELEASE Message-ID: <alpine.BSF.2.20.1510120946150.47677@noc1.cksoft.de> In-Reply-To: <358885214.31305796.1444518367048.JavaMail.zimbra@uoguelph.ca> References: <alpine.BSF.2.20.1510051157450.16263@noc1.cksoft.de> <2148690.gx9M0ZzrG1@ralph.baldwin.cx> <alpine.BSF.2.20.1510070844030.16263@noc1.cksoft.de> <3563189.eDHDcCgW5L@ralph.baldwin.cx> <alpine.BSF.2.20.1510091107010.71292@noc1.cksoft.de> <358885214.31305796.1444518367048.JavaMail.zimbra@uoguelph.ca>
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Hi Rick,
On Sat, 10 Oct 2015, Rick Macklem wrote:
> Hi again,
>
> Attached is a semantically equivalent patch to the one I posted a few
> minutes ago, but I think this one is more readable.
>
> Please let me know if you get it tested, rick
the box crashed again tonight with your patch applied. Here's the new crashinfo:
panic: Assertion mtx_unowned(m) failed at /usr/src/sys/kern/kern_mutex.c:955
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
panic: Assertion mtx_unowned(m) failed at /usr/src/sys/kern/kern_mutex.c:955
cpuid = 2
KDB: stack backtrace:
#0 0xffffffff80975bb0 at kdb_backtrace+0x60
#1 0xffffffff8093baa6 at vpanic+0x126
#2 0xffffffff8093b979 at kassert_panic+0x139
#3 0xffffffff80921c47 at _mtx_destroy+0x77
#4 0xffffffff81a1c114 at smb_iod_destroy+0xc4
#5 0xffffffff81a12eea at smb_vc_free+0x1a
#6 0xffffffff81a13e24 at sdp_trydestroy+0xb4
#7 0xffffffff81a1cb36 at smbfs_unmount+0xd6
#8 0xffffffff809d9e84 at dounmount+0x524
#9 0xffffffff809d9936 at sys_unmount+0x3c6
#10 0xffffffff80d42235 at amd64_syscall+0x265
#11 0xffffffff80d25cfb at Xfast_syscall+0xfb
Uptime: 1d21h59m0s
Dumping 191 out of 999 MB:..9%..17%..26%..34%..42%..51%..67%..76%..84%..92%
Here are the stackframes with line numbers:
(kgdb) frame 0
#0 __curthread () at ./machine/pcpu.h:219
219 __asm("movq %%gs:%1,%0" : "=r" (td)
(kgdb) frame 1
#1 doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:263
263 dumptid = curthread->td_tid;
(kgdb) frame 2
#2 0xffffffff8093b5f2 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:451
451 doadump(TRUE);
(kgdb) frame 3
#3 0xffffffff8093bae5 in vpanic (fmt=<optimized out>, ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:758
758 kern_reboot(bootopt);
(kgdb) frame 4
#4 0xffffffff8093b979 in kassert_panic (fmt=0xffffffff80e931ef "Assertion %s failed at %s:%d") at /usr/src/sys/kern/kern_shutdown.c:646
646 vpanic(fmt, ap);
(kgdb) frame 5
#5 0xffffffff80921c47 in _mtx_destroy (c=0xfffff80002db5490) at /usr/src/sys/kern/kern_mutex.c:955
955 MPASS(mtx_unowned(m));
(kgdb) frame 6
#6 0xffffffff81a1c174 in smb_iod_destroy (iod=0xfffff80002db5400) at /usr/src/sys/modules/smbfs/../../netsmb/smb_iod.c:733
733 smb_sl_destroy(&iod->iod_evlock);
(kgdb) frame 7
#7 0xffffffff81a12eea in smb_vc_free (cp=0xfffff80002933000) at /usr/src/sys/modules/smbfs/../../netsmb/smb_conn.c:499
499 smb_iod_destroy(vcp->vc_iod);
(kgdb) frame 8
#8 0xffffffff81a13e24 in sdp_trydestroy (sdp=0xfffff80002904140) at /usr/src/sys/modules/smbfs/../../netsmb/smb_dev.c:166
166 smb_vc_rele(vcp, scred);
(kgdb) frame 9
#9 0xffffffff81a1cb96 in smbfs_unmount (mp=0xfffff80015226000, mntflags=<optimized out>) at /usr/src/sys/modules/smbfs/../../fs/smbfs/smbfs_vfsops.c:297
297 sdp_trydestroy(dev);
(kgdb) frame 10
#10 0xffffffff809d9e84 in dounmount (mp=0xfffff80015226000, flags=134217728, td=0xfffff800151b0940) at /usr/src/sys/kern/vfs_mount.c:1313
1313 error = VFS_UNMOUNT(mp, flags);
(kgdb)
Let me know if you need anything else from the stackframes.
Greetings
Christian
--
Christian Kratzer CK Software GmbH
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