Date: Mon, 18 May 2015 13:07:03 -0500 From: Larry Rosenman <ler@lerctr.org> To: freebsd-current@freebsd.org Cc: Freebsd fs <freebsd-fs@freebsd.org> Subject: Re: use after free panic ZFS Message-ID: <2b200914e9c3473c30be97590f02ef49@thebighonker.lerctr.org> In-Reply-To: <20150518125600.GA1274@borg.lerctr.org> References: <20150518124247.GA6220@borg.lerctr.org> <20150518125600.GA1274@borg.lerctr.org>
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I've filed: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200288 for this. I'd appreciate someone looking at it. I'm STUCK here. On 2015-05-18 07:56, Larry Rosenman wrote: > On Mon, May 18, 2015 at 07:42:47AM -0500, Larry Rosenman wrote: >> found the following panic this am: >> >> borg.lerctr.org dumped core - see /var/crash/vmcore.5 >> >> Sun May 17 23:47:48 CDT 2015 >> >> FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #40 r283007: >> Sat May 16 07:23:43 CDT 2015 >> root@borg.lerctr.org:/usr/obj/usr/src/sys/VT-LER amd64 >> >> panic: Most recently used by solaris >> >> GNU gdb 6.1.1 [FreeBSD] >> Copyright 2004 Free Software Foundation, Inc. >> GDB is free software, covered by the GNU General Public License, and >> you are >> welcome to change it and/or distribute copies of it under certain >> conditions. >> Type "show copying" to see the conditions. >> There is absolutely no warranty for GDB. Type "show warranty" for >> details. >> This GDB was configured as "amd64-marcel-freebsd"... >> >> Unread portion of the kernel message buffer: >> Memory modified after free 0xfffff808535ea000(120) val=deadc0dd @ >> 0xfffff808535ea050 >> panic: Most recently used by solaris >> >> cpuid = 5 >> KDB: stack backtrace: >> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >> 0xfffffe100bfb7660 >> vpanic() at vpanic+0x189/frame 0xfffffe100bfb76e0 >> panic() at panic+0x43/frame 0xfffffe100bfb7740 >> mtrash_dtor() at mtrash_dtor/frame 0xfffffe100bfb7760 >> uma_zalloc_arg() at uma_zalloc_arg+0x4c2/frame 0xfffffe100bfb77d0 >> malloc() at malloc+0x198/frame 0xfffffe100bfb7820 >> zfs_range_lock() at zfs_range_lock+0x4a/frame 0xfffffe100bfb7880 >> zfs_get_data() at zfs_get_data+0x14c/frame 0xfffffe100bfb78f0 >> zil_commit() at zil_commit+0x94c/frame 0xfffffe100bfb7a10 >> zfs_freebsd_fsync() at zfs_freebsd_fsync+0xc8/frame 0xfffffe100bfb7a40 >> VOP_FSYNC_APV() at VOP_FSYNC_APV+0xf7/frame 0xfffffe100bfb7a70 >> sys_fsync() at sys_fsync+0x173/frame 0xfffffe100bfb7ae0 >> amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe100bfb7bf0 >> Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe100bfb7bf0 >> --- syscall (95, FreeBSD ELF64, sys_fsync), rip = 0x801eb5daa, rsp = >> 0x7fffffffd598, rbp = 0x7fffffffd5b0 --- >> Uptime: 1d14h25m26s >> Dumping 12469 out of 64457 >> MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91% >> >> Reading symbols from /boot/kernel/linux.ko.symbols...done. >> Loaded symbols for /boot/kernel/linux.ko.symbols >> Reading symbols from /boot/kernel/if_lagg.ko.symbols...done. >> Loaded symbols for /boot/kernel/if_lagg.ko.symbols >> Reading symbols from /boot/kernel/snd_envy24ht.ko.symbols...done. >> Loaded symbols for /boot/kernel/snd_envy24ht.ko.symbols >> Reading symbols from /boot/kernel/snd_spicds.ko.symbols...done. >> Loaded symbols for /boot/kernel/snd_spicds.ko.symbols >> Reading symbols from /boot/kernel/coretemp.ko.symbols...done. >> Loaded symbols for /boot/kernel/coretemp.ko.symbols >> Reading symbols from /boot/kernel/ichsmb.ko.symbols...done. >> Loaded symbols for /boot/kernel/ichsmb.ko.symbols >> Reading symbols from /boot/kernel/smbus.ko.symbols...done. >> Loaded symbols for /boot/kernel/smbus.ko.symbols >> Reading symbols from /boot/kernel/ichwd.ko.symbols...done. >> Loaded symbols for /boot/kernel/ichwd.ko.symbols >> Reading symbols from /boot/kernel/cpuctl.ko.symbols...done. >> Loaded symbols for /boot/kernel/cpuctl.ko.symbols >> Reading symbols from /boot/kernel/crypto.ko.symbols...done. >> Loaded symbols for /boot/kernel/crypto.ko.symbols >> Reading symbols from /boot/kernel/cryptodev.ko.symbols...done. >> Loaded symbols for /boot/kernel/cryptodev.ko.symbols >> Reading symbols from /boot/kernel/dtraceall.ko.symbols...done. >> Loaded symbols for /boot/kernel/dtraceall.ko.symbols >> Reading symbols from /boot/kernel/profile.ko.symbols...done. >> Loaded symbols for /boot/kernel/profile.ko.symbols >> Reading symbols from /boot/kernel/dtrace.ko.symbols...done. >> Loaded symbols for /boot/kernel/dtrace.ko.symbols >> Reading symbols from >> /boot/kernel/systrace_freebsd32.ko.symbols...done. >> Loaded symbols for /boot/kernel/systrace_freebsd32.ko.symbols >> Reading symbols from /boot/kernel/systrace.ko.symbols...done. >> Loaded symbols for /boot/kernel/systrace.ko.symbols >> Reading symbols from /boot/kernel/sdt.ko.symbols...done. >> Loaded symbols for /boot/kernel/sdt.ko.symbols >> Reading symbols from /boot/kernel/lockstat.ko.symbols...done. >> Loaded symbols for /boot/kernel/lockstat.ko.symbols >> Reading symbols from /boot/kernel/fasttrap.ko.symbols...done. >> Loaded symbols for /boot/kernel/fasttrap.ko.symbols >> Reading symbols from /boot/kernel/fbt.ko.symbols...done. >> Loaded symbols for /boot/kernel/fbt.ko.symbols >> Reading symbols from /boot/kernel/dtnfscl.ko.symbols...done. >> Loaded symbols for /boot/kernel/dtnfscl.ko.symbols >> Reading symbols from /boot/kernel/dtmalloc.ko.symbols...done. >> Loaded symbols for /boot/kernel/dtmalloc.ko.symbols >> Reading symbols from /boot/modules/vboxdrv.ko...done. >> Loaded symbols for /boot/modules/vboxdrv.ko >> Reading symbols from /boot/modules/nvidia.ko...done. >> Loaded symbols for /boot/modules/nvidia.ko >> Reading symbols from /boot/kernel/ipmi.ko.symbols...done. >> Loaded symbols for /boot/kernel/ipmi.ko.symbols >> Reading symbols from /boot/kernel/ipmi_linux.ko.symbols...done. >> Loaded symbols for /boot/kernel/ipmi_linux.ko.symbols >> Reading symbols from /boot/kernel/radeonkms.ko.symbols...done. >> Loaded symbols for /boot/kernel/radeonkms.ko.symbols >> Reading symbols from /boot/kernel/iicbb.ko.symbols...done. >> Loaded symbols for /boot/kernel/iicbb.ko.symbols >> Reading symbols from /boot/kernel/iicbus.ko.symbols...done. >> Loaded symbols for /boot/kernel/iicbus.ko.symbols >> Reading symbols from /boot/kernel/iic.ko.symbols...done. >> Loaded symbols for /boot/kernel/iic.ko.symbols >> Reading symbols from /boot/kernel/drm2.ko.symbols...done. >> Loaded symbols for /boot/kernel/drm2.ko.symbols >> Reading symbols from >> /boot/kernel/radeonkmsfw_R100_cp.ko.symbols...done. >> Loaded symbols for /boot/kernel/radeonkmsfw_R100_cp.ko.symbols >> Reading symbols from /boot/kernel/uhid.ko.symbols...done. >> Loaded symbols for /boot/kernel/uhid.ko.symbols >> Reading symbols from /boot/kernel/ums.ko.symbols...done. >> Loaded symbols for /boot/kernel/ums.ko.symbols >> Reading symbols from /boot/modules/vboxnetflt.ko...done. >> Loaded symbols for /boot/modules/vboxnetflt.ko >> Reading symbols from /boot/kernel/netgraph.ko.symbols...done. >> Loaded symbols for /boot/kernel/netgraph.ko.symbols >> Reading symbols from /boot/kernel/ng_ether.ko.symbols...done. >> Loaded symbols for /boot/kernel/ng_ether.ko.symbols >> Reading symbols from /boot/modules/vboxnetadp.ko...done. >> Loaded symbols for /boot/modules/vboxnetadp.ko >> #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 >> ) at pcpu.h:221 >> 221 pcpu.h: No such file or directory. >> in pcpu.h >> (kgdb) #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 >> ) at pcpu.h:221 >> #1 0xffffffff80a839b5 in kern_reboot (howto=Unhandled dwarf >> expression opcode 0x93 >> ) >> at /usr/src/sys/kern/kern_shutdown.c:447 >> #2 0xffffffff80a83fa8 in vpanic (fmt=<value optimized out>, >> ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:744 >> #3 0xffffffff80a83ff3 in panic (fmt=0x0) >> at /usr/src/sys/kern/kern_shutdown.c:675 >> #4 0xffffffff80d13750 in mtrash_ctor (mem=<value optimized out>, >> size=<value optimized out>, arg=<value optimized out>, >> flags=<value optimized out>) at /usr/src/sys/vm/uma_dbg.c:138 >> #5 0xffffffff80d0f6d2 in uma_zalloc_arg (zone=0xfffff80ffffc9680, >> udata=0x0, >> flags=2) at /usr/src/sys/vm/uma_core.c:2197 >> #6 0xffffffff80a64158 in malloc (size=<value optimized out>, >> mtp=0xffffffff815e16e0, flags=<value optimized out>) at uma.h:336 >> #7 0xffffffff80402b4a in zfs_range_lock (zp=0xfffff8075e835730, >> off=9158656, >> len=8192, type=Unhandled dwarf expression opcode 0x93 >> ) >> at >> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c:432 >> #8 0xffffffff8040886c in zfs_get_data (arg=<value optimized out>, >> lr=<value optimized out>, >> buf=0xfffffe0662be8178 <Address 0xfffffe0662be8178 out of bounds>, >> zio=0xfffff80d78b89ac8) >> at >> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:1250 >> #9 0xffffffff8041c71c in zil_commit (zilog=0xfffff800185c1400, >> foid=<value optimized out>) >> at >> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c:1108 >> #10 0xffffffff80410168 in zfs_freebsd_fsync (ap=<value optimized out>) >> at >> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:2747 >> #11 0xffffffff80fdfcd7 in VOP_FSYNC_APV (vop=<value optimized out>, >> a=<value optimized out>) at vnode_if.c:1328 >> #12 0xffffffff80b40883 in sys_fsync (td=0xfffff8011b253940, >> uap=<value optimized out>) at vnode_if.h:549 >> #13 0xffffffff80e968da in amd64_syscall (td=0xfffff8011b253940, >> traced=0) >> at subr_syscall.c:133 >> #14 0xffffffff80e767bb in Xfast_syscall () >> at /usr/src/sys/amd64/amd64/exception.S:395 >> #15 0x0000000801eb5daa in ?? () >> Previous frame inner to this frame (corrupt stack?) >> Current language: auto; currently minimal >> (kgdb) >> >> I have the core. > And, trying to re-compile to pick up the latest, got another one: > > borg.lerctr.org dumped core - see /var/crash/vmcore.6 > > Mon May 18 07:51:57 CDT 2015 > > FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #40 r283007: > Sat May 16 07:23:43 CDT 2015 > root@borg.lerctr.org:/usr/obj/usr/src/sys/VT-LER amd64 > > panic: Most recently used by solaris > > GNU gdb 6.1.1 [FreeBSD] > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and > you are > welcome to change it and/or distribute copies of it under certain > conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for > details. > This GDB was configured as "amd64-marcel-freebsd"... > > Unread portion of the kernel message buffer: > Memory modified after free 0xfffff80c88f1f980(120) val=deadc0dd @ > 0xfffff80c88f1f9c0 > panic: Most recently used by solaris > > cpuid = 0 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > 0xfffffe100c459600 > vpanic() at vpanic+0x189/frame 0xfffffe100c459680 > panic() at panic+0x43/frame 0xfffffe100c4596e0 > mtrash_dtor() at mtrash_dtor/frame 0xfffffe100c459700 > uma_zalloc_arg() at uma_zalloc_arg+0x4c2/frame 0xfffffe100c459770 > malloc() at malloc+0x198/frame 0xfffffe100c4597c0 > zfs_range_lock() at zfs_range_lock+0x4a/frame 0xfffffe100c459820 > zfs_freebsd_read() at zfs_freebsd_read+0x1c7/frame 0xfffffe100c4598c0 > VOP_READ_APV() at VOP_READ_APV+0xf1/frame 0xfffffe100c4598f0 > vn_read() at vn_read+0x237/frame 0xfffffe100c459970 > vn_io_fault() at vn_io_fault+0x10a/frame 0xfffffe100c4599f0 > dofileread() at dofileread+0x95/frame 0xfffffe100c459a40 > kern_readv() at kern_readv+0x68/frame 0xfffffe100c459a90 > sys_read() at sys_read+0x63/frame 0xfffffe100c459ae0 > amd64_syscall() at amd64_syscall+0x25a/frame 0xfffffe100c459bf0 > Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe100c459bf0 > --- syscall (3, FreeBSD ELF64, sys_read), rip = 0x8009638fa, rsp = > 0x7fffffffe968, rbp = 0x7fffffffe980 --- > Uptime: 7h59m25s > Dumping 14815 out of 64457 > MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91% > > Reading symbols from /boot/kernel/linux.ko.symbols...done. > Loaded symbols for /boot/kernel/linux.ko.symbols > Reading symbols from /boot/kernel/if_lagg.ko.symbols...done. > Loaded symbols for /boot/kernel/if_lagg.ko.symbols > Reading symbols from /boot/kernel/snd_envy24ht.ko.symbols...done. > Loaded symbols for /boot/kernel/snd_envy24ht.ko.symbols > Reading symbols from /boot/kernel/snd_spicds.ko.symbols...done. > Loaded symbols for /boot/kernel/snd_spicds.ko.symbols > Reading symbols from /boot/kernel/coretemp.ko.symbols...done. > Loaded symbols for /boot/kernel/coretemp.ko.symbols > Reading symbols from /boot/kernel/ichsmb.ko.symbols...done. > Loaded symbols for /boot/kernel/ichsmb.ko.symbols > Reading symbols from /boot/kernel/smbus.ko.symbols...done. > Loaded symbols for /boot/kernel/smbus.ko.symbols > Reading symbols from /boot/kernel/ichwd.ko.symbols...done. > Loaded symbols for /boot/kernel/ichwd.ko.symbols > Reading symbols from /boot/kernel/cpuctl.ko.symbols...done. > Loaded symbols for /boot/kernel/cpuctl.ko.symbols > Reading symbols from /boot/kernel/crypto.ko.symbols...done. > Loaded symbols for /boot/kernel/crypto.ko.symbols > Reading symbols from /boot/kernel/cryptodev.ko.symbols...done. > Loaded symbols for /boot/kernel/cryptodev.ko.symbols > Reading symbols from /boot/kernel/dtraceall.ko.symbols...done. > Loaded symbols for /boot/kernel/dtraceall.ko.symbols > Reading symbols from /boot/kernel/profile.ko.symbols...done. > Loaded symbols for /boot/kernel/profile.ko.symbols > Reading symbols from /boot/kernel/dtrace.ko.symbols...done. > Loaded symbols for /boot/kernel/dtrace.ko.symbols > Reading symbols from /boot/kernel/systrace_freebsd32.ko.symbols...done. > Loaded symbols for /boot/kernel/systrace_freebsd32.ko.symbols > Reading symbols from /boot/kernel/systrace.ko.symbols...done. > Loaded symbols for /boot/kernel/systrace.ko.symbols > Reading symbols from /boot/kernel/sdt.ko.symbols...done. > Loaded symbols for /boot/kernel/sdt.ko.symbols > Reading symbols from /boot/kernel/lockstat.ko.symbols...done. > Loaded symbols for /boot/kernel/lockstat.ko.symbols > Reading symbols from /boot/kernel/fasttrap.ko.symbols...done. > Loaded symbols for /boot/kernel/fasttrap.ko.symbols > Reading symbols from /boot/kernel/fbt.ko.symbols...done. > Loaded symbols for /boot/kernel/fbt.ko.symbols > Reading symbols from /boot/kernel/dtnfscl.ko.symbols...done. > Loaded symbols for /boot/kernel/dtnfscl.ko.symbols > Reading symbols from /boot/kernel/dtmalloc.ko.symbols...done. > Loaded symbols for /boot/kernel/dtmalloc.ko.symbols > Reading symbols from /boot/modules/vboxdrv.ko...done. > Loaded symbols for /boot/modules/vboxdrv.ko > Reading symbols from /boot/modules/nvidia.ko...done. > Loaded symbols for /boot/modules/nvidia.ko > Reading symbols from /boot/kernel/ipmi.ko.symbols...done. > Loaded symbols for /boot/kernel/ipmi.ko.symbols > Reading symbols from /boot/kernel/ipmi_linux.ko.symbols...done. > Loaded symbols for /boot/kernel/ipmi_linux.ko.symbols > Reading symbols from /boot/kernel/radeonkms.ko.symbols...done. > Loaded symbols for /boot/kernel/radeonkms.ko.symbols > Reading symbols from /boot/kernel/iicbb.ko.symbols...done. > Loaded symbols for /boot/kernel/iicbb.ko.symbols > Reading symbols from /boot/kernel/iicbus.ko.symbols...done. > Loaded symbols for /boot/kernel/iicbus.ko.symbols > Reading symbols from /boot/kernel/iic.ko.symbols...done. > Loaded symbols for /boot/kernel/iic.ko.symbols > Reading symbols from /boot/kernel/drm2.ko.symbols...done. > Loaded symbols for /boot/kernel/drm2.ko.symbols > Reading symbols from > /boot/kernel/radeonkmsfw_R100_cp.ko.symbols...done. > Loaded symbols for /boot/kernel/radeonkmsfw_R100_cp.ko.symbols > Reading symbols from /boot/kernel/uhid.ko.symbols...done. > Loaded symbols for /boot/kernel/uhid.ko.symbols > Reading symbols from /boot/kernel/ums.ko.symbols...done. > Loaded symbols for /boot/kernel/ums.ko.symbols > Reading symbols from /boot/modules/vboxnetflt.ko...done. > Loaded symbols for /boot/modules/vboxnetflt.ko > Reading symbols from /boot/kernel/netgraph.ko.symbols...done. > Loaded symbols for /boot/kernel/netgraph.ko.symbols > Reading symbols from /boot/kernel/ng_ether.ko.symbols...done. > Loaded symbols for /boot/kernel/ng_ether.ko.symbols > Reading symbols from /boot/modules/vboxnetadp.ko...done. > Loaded symbols for /boot/modules/vboxnetadp.ko > #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 > ) at pcpu.h:221 > 221 pcpu.h: No such file or directory. > in pcpu.h > (kgdb) #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 > ) at pcpu.h:221 > #1 0xffffffff80a839b5 in kern_reboot (howto=Unhandled dwarf > expression opcode 0x93 > ) > at /usr/src/sys/kern/kern_shutdown.c:447 > #2 0xffffffff80a83fa8 in vpanic (fmt=<value optimized out>, > ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:744 > #3 0xffffffff80a83ff3 in panic (fmt=0x0) > at /usr/src/sys/kern/kern_shutdown.c:675 > #4 0xffffffff80d13750 in mtrash_ctor (mem=<value optimized out>, > size=<value optimized out>, arg=<value optimized out>, > flags=<value optimized out>) at /usr/src/sys/vm/uma_dbg.c:138 > #5 0xffffffff80d0f6d2 in uma_zalloc_arg (zone=0xfffff80ffffc9680, > udata=0x0, > flags=2) at /usr/src/sys/vm/uma_core.c:2197 > #6 0xffffffff80a64158 in malloc (size=<value optimized out>, > mtp=0xffffffff815e16e0, flags=<value optimized out>) at uma.h:336 > #7 0xffffffff80402b4a in zfs_range_lock (zp=0xfffff806afc8d170, > off=75316383, len=131072, type=Unhandled dwarf expression opcode > 0x93 > ) > at > /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c:432 > #8 0xffffffff8040e517 in zfs_freebsd_read (ap=<value optimized out>) > at > /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:703 > #9 0xffffffff80fdf3b1 in VOP_READ_APV (vop=<value optimized out>, > a=<value optimized out>) at vnode_if.c:930 > #10 0xffffffff80b461b7 in vn_read (fp=0xfffff8002e1389b0, > uio=0xfffffe100c459ab0, active_cred=<value optimized out>, > flags=<value optimized out>, td=0x0) at vnode_if.h:384 > #11 0xffffffff80b425ea in vn_io_fault (fp=0xfffff8002e1389b0, > uio=0xfffffe100c459ab0, active_cred=0x0, flags=0, td=0x0) > at /usr/src/sys/kern/vfs_vnops.c:1167 > #12 0xffffffff80ae1525 in dofileread (td=0xfffff804bb5f8940, fd=3, > fp=0xfffff8002e1389b0, auio=0xfffffe100c459ab0, > offset=<value optimized out>, flags=Unhandled dwarf expression > opcode 0x93 > ) at file.h:296 > #13 0xffffffff80ae1228 in kern_readv (td=0xfffff804bb5f8940, > fd=Unhandled dwarf expression opcode 0x93 > ) > at /usr/src/sys/kern/sys_generic.c:272 > #14 0xffffffff80ae11b3 in sys_read (td=0x0, uap=<value optimized out>) > at /usr/src/sys/kern/sys_generic.c:185 > #15 0xffffffff80e968da in amd64_syscall (td=0xfffff804bb5f8940, > traced=0) > at subr_syscall.c:133 > #16 0xffffffff80e767bb in Xfast_syscall () > at /usr/src/sys/amd64/amd64/exception.S:395 > #17 0x00000008009638fa in ?? () > Previous frame inner to this frame (corrupt stack?) > Current language: auto; currently minimal > (kgdb) > I have BOTH cores. -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: ler@lerctr.org US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
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