on 24/05/2011 10:26 Joerg Wunsch said the following: > As Andriy Gapon wrote: > >>> panic: wrong offset 4096 for sectorsize 2352 >>> >>> Any ideas why this happens, and how to avoid it? > >> Backtrace would be a first thing. > > OK, here we go (the core has been dumped from within a serial console > BREAK DDB entry, I'm omitting the frames related to that): > > #16 0xc0537352 in _cv_wait (cvp=0xc6e6bcd4, lock=0xc6e6bdd4) at > /usr/src/sys/kern/kern_condvar.c:96 > #17 0xc0aa8a13 in usb_process (arg=0xc6e6bccc) > at /usr/src/sys/modules/usb/usb/../../../dev/usb/usb_process.c:183 > #18 0xc054f948 in fork_exit (callout=0xc0aa88e0 <usb_process>, > arg=0xc6e6bccc, frame=0xc6a1ad28) > at /usr/src/sys/kern/kern_fork.c:865 > #19 0xc077fd34 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:275
Unfortunately this seems like a completely unrelated thread. And what you write below explains why. Maybe you can find the right thread (with the original panic call in it) in this crash dump or re-produce the problem later. > After the initial panic, I typed "c" in DDB, in the assumption > it would proceed with a coredump, but it didn't. That's why I > hit BREAK again, and forced a dump through the "panic" DDB > command. Now, I'm no longer sure whether the frames above do > really relate to the mentioned panic string. > >> Information from a frame that called panic >> would the next thing. > > (kgdb) up 16 > #16 0xc0537352 in _cv_wait (cvp=0xc6e6bcd4, lock=0xc6e6bdd4) at > /usr/src/sys/kern/kern_condvar.c:96 > 96 { > (kgdb) l > 91 * sleeping and will be held on return. It is recommended that the > mutex be > 92 * held when cv_signal or cv_broadcast are called. > 93 */ > 94 void > 95 _cv_wait(struct cv *cvp, struct lock_object *lock) > 96 { > 97 WITNESS_SAVE_DECL(lock_witness); > 98 struct lock_class *class; > 99 struct thread *td; > 100 int lock_state; > (kgdb) up > #17 0xc0aa8a13 in usb_process (arg=0xc6e6bccc) > at /usr/src/sys/modules/usb/usb/../../../dev/usb/usb_process.c:183 > 183 cv_wait(&up->up_cv, up->up_mtx); > (kgdb) l > 178 if (up->up_dsleep) { > 179 up->up_dsleep = 0; > 180 cv_broadcast(&up->up_drain); > 181 } > 182 up->up_msleep = 1; > 183 cv_wait(&up->up_cv, up->up_mtx); > 184 } > 185 > 186 up->up_ptr = NULL; > 187 cv_signal(&up->up_cv); > (kgdb) up > #18 0xc054f948 in fork_exit (callout=0xc0aa88e0 <usb_process>, > arg=0xc6e6bccc, frame=0xc6a1ad28) > at /usr/src/sys/kern/kern_fork.c:865 > 865 callout(arg, frame); > (kgdb) l > 860 * cpu_set_fork_handler intercepts this function call to > 861 * have this call a non-return function to stay in kernel mode. > 862 * initproc has its own fork handler, but it does return. > 863 */ > 864 KASSERT(callout != NULL, ("NULL callout in fork_exit")); > 865 callout(arg, frame); > 866 > 867 /* > 868 * Check if a kernel thread misbehaved and returned from its > main > 869 * function. > > Here is the panic message from the DDB console: > > panic: wrong offset 4096 for sectorsize 2352 > cpuid = 0 > KDB: enter: panic > [thread pid 2 tid 100009 ] > Stopped at kdb_enter+0x3a: movl $0,kdb_why > > as well as the output of the DDB "ps" command: > > db> ps > pid ppid pgrp uid state wmesg wchan cmd > 70698 70661 70661 0 S+ g_waitid 0xc088bcec cd-discid > 70661 2486 70661 0 S+ piperd 0xc98eb498 sh > 70615 1450 1416 8 S nanslp 0xc088e224 sleep > 70466 1706 1706 125 R smtpd > 70160 1706 1706 125 S select 0xc8281624 pickup > 68504 1706 1706 125 S select 0xc8a17324 anvil > 56974 1330 1330 58 S lockf 0xced9f7c0 perl5.8.9 > 56769 1330 1330 58 S lockf 0xcc0a8400 perl5.8.9 > 56578 1330 1330 58 S lockf 0xc7517900 perl5.8.9 > 56268 1330 1330 58 S accept 0xc7ef103e perl5.8.9 > 56078 1330 1330 58 S lockf 0xc8a88a00 perl5.8.9 > 52965 52961 2222 107 S (threaded) mysql-query-browser > 100291 S ucond 0xc8a1c880 mysql-query-browser > 100289 S select 0xc821f324 initial thread > 52961 1 2222 107 S wait 0xce70aac0 sh > 49078 2262 49078 107 S+ pause 0xc8be8b18 screen > 38746 1591 1591 80 S lockf 0xc8a219c0 httpd > 35437 1591 1591 80 S lockf 0xc8a41440 httpd > 35436 1591 1591 80 S kqread 0xcf21f300 httpd > 35435 1591 1591 80 S lockf 0xc8a38c00 httpd > 27055 1591 1591 80 S lockf 0xc8aa0b40 httpd > 10767 1 2222 107 S select 0xc8a14264 xpdf > 99867 1591 1591 80 S lockf 0xc8a31140 httpd > 91459 1 91459 32001 Ss select 0xc7517024 dbus-daemon > 91458 1 91454 32001 S+ select 0xcd0bec64 dbus-launch > 54346 1591 1591 80 S lockf 0xcc4d3ac0 httpd > 51334 51314 51334 107 S+ (threaded) qlandkartegt > 100221 S select 0xc8aa6664 initial thread > 51314 51312 51314 107 Ss+ ttyin 0xcd207470 tcsh > 51312 1 2222 107 S select 0xc8a38ea4 xterm > 29249 26397 29249 107 S+ select 0xc8a5c164 initial thread > 26397 26395 26397 107 Ss+ ttyin 0xc929e670 tcsh > 26395 1 2222 107 S select 0xc8a15664 xterm > 25354 25352 25354 107 Ss+ ttyin 0xc93a5e70 tcsh > 25352 1 2222 107 S select 0xc821f964 xterm > 16153 1591 1591 80 S lockf 0xc8a31240 httpd > 16151 1591 1591 80 S lockf 0xcc4e0880 httpd > 15141 1591 1591 80 S lockf 0xcee65400 httpd > 13309 13304 13303 32001 S+ (threaded) soffice.bin > 100237 S ucond 0xc8aa0740 soffice.bin > 100235 S select 0xc8a9e4e4 soffice.bin > 100236 S accept 0xc898a9e6 soffice.bin > 100232 S ucond 0xc8a35b80 soffice.bin > 100165 S select 0xc82eb264 initial thread > 13304 13303 13303 32001 S+ wait 0xc9177ac0 sh > 13303 5638 13303 32001 S+ wait 0xc897c2b0 sh > 8734 5638 8734 32001 S+ select 0xc81fd464 initial thread > 7892 2273 7892 107 Ss+ ttyin 0xc8feda70 tcsh > 7560 1706 1706 125 S select 0xc8a396e4 tlsmgr > 5638 5635 5638 32001 Ss+ ttyin 0xc89cba70 bash > 5635 5634 5635 32001 Ss select 0xc8a21724 xterm > 5634 5632 5632 32001 S select 0xc7266264 sshd > 5632 1635 5632 0 Ss sbwait 0xc8f96bfc sshd > 4468 1 2222 107 S select 0xc8a401e4 initial thread > 4466 4462 2222 107 R (threaded) firefox-bin > 100271 S ucond 0xc8aad980 firefox-bin > 100274 S ucond 0xc8a41840 firefox-bin > 100234 S ucond 0xc8a3ea40 firefox-bin > 100233 S ucond 0xc8a34200 firefox-bin > 100231 S ucond 0xc72e3d80 firefox-bin > 100230 S ucond 0xc8a38ac0 firefox-bin > 100229 CanRun firefox-bin > 100228 S ucond 0xc8a5f8c0 firefox-bin > 100227 S select 0xc8a3b964 firefox-bin > 100171 S select 0xc821faa4 initial thread > 4462 4458 2222 107 S wait 0xc8be7560 sh > 4458 1 2222 107 S wait 0xc8bcbac0 sh > 3728 3653 3728 32001 S+ select 0xc8a613e4 mutt > 3653 3650 3653 32001 Ss+ wait 0xc8be82b0 bash > 3650 3649 3650 32001 Ss select 0xc8a5fea4 xterm > 3649 3645 3645 32001 S select 0xc8a3f4e4 sshd > 3645 1635 3645 0 Ss sbwait 0xc8306728 sshd > 2486 2485 2486 0 S+ pause 0xc897d308 tcsh > 2485 2251 2485 107 S+ wait 0xc7f41560 su > 2277 2275 2277 107 S+ select 0xc8a5cb64 mutt > 2275 2273 2275 107 Ss+ pause 0xc897c868 tcsh > 2273 1 2273 107 Ss select 0xc821f624 screen > 2262 2260 2262 107 Ss+ pause 0xc809bb18 tcsh > 2260 1 2222 107 S select 0xc81fdbe4 xterm > 2251 2240 2251 107 Ss+ pause 0xc809a868 tcsh > 2249 1 2222 107 S select 0xc8220764 xload > 2248 1 2222 107 S select 0xc8a61124 xclock > 2245 2222 2222 107 S select 0xc821f864 FvwmPager > 2244 2222 2222 107 S select 0xc8280ea4 GoodStuff > 2242 2222 2222 107 S select 0xc82eb9a4 xconsole > 2241 2222 2222 107 R initial thread > 2240 2222 2222 107 S select 0xc8280464 xterm > 2239 2222 2222 107 S select 0xc8aae064 beforelight > 2225 2222 2225 107 Ss select 0xc821f2e4 ssh-agent > 2222 1871 2222 107 Ss select 0xc8a449a4 fvwm > 2184 1803 2184 0 S+ ttyin 0xc6fa8a70 tcsh > 1916 1812 1808 0 S select 0xc7ffcca4 initial thread > 1871 1720 1871 0 Ss wait 0xc74f9810 xdm > 1848 1720 1848 0 Ss select 0xc8281164 initial thread > 1847 1720 1847 0 Ss select 0xc821f2a4 xdm > 1835 1812 1808 0 S kqread 0xc8219c00 initial thread > 1816 1812 1808 0 R initial thread > 1812 1808 1808 0 S select 0xc81fe5a4 initial thread > 1811 1 1811 0 Ss (threaded) console-kit-daemon > 100175 S ucond 0xc6f258c0 console-kit-daemon > 100121 S select 0xc8280424 console-kit-daemon > 1808 1 1808 560 Ss (threaded) hald > 100176 S piperd 0xc7348ab8 hald > 100096 D g_waitfo 0xced9d680 hald > 1803 1 1803 0 Ss+ wait 0xc8270560 login > 1802 1 1802 0 Ss+ ttyin 0xc6fa7070 getty > 1801 1 1801 0 Ss+ ttyin 0xc6fa7270 getty > 1800 1 1800 0 Ss+ ttyin 0xc6efe870 getty > 1799 1 1799 0 Ss+ ttyin 0xc6efea70 getty > 1798 1 1798 0 Ss+ ttyin 0xc6efee70 getty > 1756 1 1756 0 Ss select 0xc81fd2a4 inetd > 1723 1720 1723 0 Ss select 0xc8281724 initial thread > 1720 1 1720 0 Ss select 0xc8280664 xdm > 1711 1706 1706 125 S select 0xc821f8a4 qmgr > 1706 1 1706 0 Ss select 0xc72673e4 master > 1647 1 1647 0 Ss nanslp 0xc088e224 cron > 1635 1 1635 0 Ss select 0xc7ffc824 sshd > 1591 1 1591 0 Ss select 0xc75292a4 httpd > 1538 1537 1537 0 S select 0xc7ffc8e4 conserver > 1537 1 1537 0 Ss select 0xc7ffcea4 conserver > 1526 1350 1350 0 S select 0xc7529aa4 perl > 1525 1350 1350 0 S select 0xc7529e24 perl > 1519 1 1519 0 Ss kqread 0xc8019780 cupsd > 1487 1 1487 556 Ss select 0xc7ffcc64 dbus-daemon > 1450 1 1416 8 S+ wait 0xc809a2b0 sh > 1449 1 1449 8 Rs innd > 1427 1373 1370 89 S+ (threaded) mysqld > 100140 S ucond 0xc7266a00 mysqld > 100136 S sigwait 0xe96d4bb0 mysqld > 100139 S ucond 0xc7ffd240 mysqld > 100138 S select 0xc7ffd4a4 mysqld > 100137 S select 0xc7ffd164 mysqld > 100128 S ucond 0xc7528640 mysqld > 100127 S ucond 0xc70dc680 mysqld > 100126 S ucond 0xc7517a00 mysqld > 100125 S ucond 0xc7527840 mysqld > 100064 S select 0xc7529764 initial thread > 1373 1 1370 89 S+ wait 0xc7f3f560 sh > 1350 1 1350 0 Ss select 0xc7518464 perl > 1330 1 1330 58 Ss select 0xc7517b64 perl5.8.9 > 1322 1311 1309 88 S piperd 0xc7347620 unlinkd > 1321 1311 1309 88 S sbwait 0xc7ef1bfc dnsserver > 1320 1311 1309 88 S sbwait 0xc7530d98 dnsserver > 1319 1311 1309 88 S sbwait 0xc7ef13f0 dnsserver > 1318 1311 1309 88 S sbwait 0xc7ee7a60 dnsserver > 1317 1311 1309 88 S sbwait 0xc7ef2254 dnsserver > 1311 1309 1309 88 S kqread 0xc7f6ce00 squid > 1309 1 1309 88 Ss wait 0xc7f3f000 squid > 1283 1 1283 67 Ss select 0xc72e3d64 dhcpd > 1224 1 1224 0 Ss select 0xc7528e64 powerd > 1216 1 1216 0 Rs ntpd > 1052 1 1052 0 Ss (threaded) apcupsd > 100145 S select 0xc6fab564 apcupsd > 100070 S select 0xc7517724 apcupsd > 1029 1028 1028 0 S (threaded) nfsd > 100116 S rpcsvc 0xc7517410 nfsd: service > 100115 S rpcsvc 0xc7517550 nfsd: service > 100114 S rpcsvc 0xc7527010 nfsd: service > 100113 S rpcsvc 0xc75174d0 nfsd: master > 1028 1 1028 0 Ss select 0xc72e2a64 nfsd > 1018 1 1018 0 Ss select 0xc7517364 mountd > 926 1 926 0 Ss select 0xc7527a24 rpcbind > 909 1 909 53 Rs (threaded) named > 100100 RunQ named > 100099 S ucond 0xc7527140 named > 100098 S ucond 0xc7517b80 named > 100097 S ucond 0xc7527200 named > 100075 S sigwait 0xe95debb0 named > 817 1 817 0 Ss select 0xc75285a4 syslogd > 636 1 636 0 Ss select 0xc75270a4 devd > 604 1 604 0 Rs moused > 464 455 455 64 S bpf 0xc7538400 pflogd > 455 1 455 0 Ss sbwait 0xc751e728 pflogd > 452 0 0 0 SL pftm 0xc760fb40 [pfpurge] > 21 0 0 0 SL sdflush 0xc08a7000 [softdepflush] > 20 0 0 0 SL vlruwt 0xc6dabac0 [vnlru] > 19 0 0 0 SL syncer 0xc08a1a34 [syncer] > 18 0 0 0 SL psleep 0xc08a1768 [bufdaemon] > 17 0 0 0 SL pgzero 0xc08a7cd4 [pagezero] > 16 0 0 0 SL psleep 0xc08a78fc [vmdaemon] > 15 0 0 0 SL psleep 0xc08a78c4 [pagedaemon] > 9 0 0 0 SL ccb_scan 0xc0877454 [xpt_thrd] > 8 0 0 0 SL - 0xc6fb3100 [gv_worker] > 7 0 0 0 SL waiting_ 0xc08a3218 [sctp_iterator] > 6 0 0 0 SL - 0xc6efe63c [fdc0] > 5 0 0 0 SL idle 0xc6f32000 [aic_recovery0] > 14 0 0 0 RL (threaded) usb > 100033 D - 0xc6e6bd34 [usbus1] > 100032 RunQ [usbus1] > 100031 Run CPU 0 [usbus1] > 100030 D - 0xc6e6bca4 [usbus1] > 100028 D - 0xc6e62b5c [usbus0] > 100027 D - 0xc6e62b2c [usbus0] > 100026 Run CPU 1 [usbus0] > 100025 RunQ [usbus0] > 13 0 0 0 SL - 0xc088e084 [yarrow] > 4 0 0 0 SL - 0xc088bdc4 [g_down] > 3 0 0 0 SL - 0xc088bdc0 [g_up] > 2 0 0 0 RL [g_event] > 12 0 0 0 RL (threaded) intr > 100044 I [irq7: ppc0] > 100041 RunQ [irq257: re0] > 100040 I [irq20: atapci1] > 100039 I [irq15: ata1] > 100038 I [irq14: ata0] > 100037 RunQ [swi0: uart uart+++*] > 100036 RunQ [irq17: sym1 puc0] > 100035 I [irq16: sym0 ahd0] > 100034 I [irq256: hdac0] > 100029 L *ehci0 0xc7f46280 [irq22: ehci0] > 100024 L *ohci0 0xc6cc9280 [irq21: ohci0] > 100023 I [irq9: acpi0] > 100021 I [swi5: +] > 100019 I [swi2: cambio] > 100015 I [swi6: task queue] > 100013 I [swi6: Giant taskq] > 100008 I [swi1: netisr 0] > 100007 I [swi3: vm] > 100006 RunQ [swi4: clock] > 100005 RunQ [swi4: clock] > 11 0 0 0 RL (threaded) idle > 100004 CanRun [idle: cpu0] > 100003 CanRun [idle: cpu1] > 1 0 1 0 SLs wait 0xc6d2bac0 [init] > 10 0 0 0 SL audit_wo 0xc08a69a0 [audit] > 0 0 0 0 SLs (threaded) kernel > 100117 D - 0xc75279c0 [aiod_bio taskq] > 100022 D - 0xc6dfc200 [thread taskq] > 100020 D - 0xc6dfc2c0 [kqueue taskq] > 100018 D - 0xc6dfc400 [acpi_task_2] > 100017 D - 0xc6dfc400 [acpi_task_1] > 100016 D - 0xc6dfc400 [acpi_task_0] > 100014 D - 0xc6dfc740 [ffs_trim taskq] > 100000 D sched 0xc088be80 [swapper] > > I hope that somehow makes sense ... I guess I could repeat the panic > again by re-issuing the abcde command, but that will have to wait > until tonight. > -- Andriy Gapon _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"