USB CD Eject Failures
Been playing around with sysutils/eject to automate some media backup stuff. I note that "after a number of ejects" the USB 2 CD drive will cease responding. I don't think its a race to failure, it acts like resource starvation/leak. Seems fairly reproducible, if someone gets to it before I do, let me know. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261961 I suspect that something has changed in the 12 years since sysutils/eject was last looked at and the CDIOCEJECT case in sys/cam/scsi_cd.c probably needs an eyeball. The close tray command also seems nonfunctional, which probably means that a data structure has changed or something else that I haven't started at in quite some time. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261936 sean
Re: Kernel panic for if_epair
On 16 Feb 2022, at 11:31, qroxana wrote: > It's running 14.0-CURRENT armv7 main-n252983-d21e71efce39 > > Kernel page fault with the following non-sleepable locks held: > exclusive sleep mutex epairidx (epairidx) r = 0 (0xe2fe9160) locked @ > /usr/src/sys/net/if_epair.c:165 > stack backtrace: > #0 0xc03558f8 at witness_debugger+0x7c > #1 0xc0356b3c at witness_warn+0x3fc > #2 0xc05eb3c8 at abort_handler+0x1d8 > #3 0xc05ca8e0 at exception_exit+0 > #4 0xc0475928 at udp_input+0x1c0 > #5 0xc0441884 at ip_input+0xa18 > #6 0xc041426c at netisr_dispatch_src+0x100 > #7 0xc040b9a0 at ether_demux+0x1c8 > #8 0xc040d22c at ether_nh_input+0x514 > #9 0xc041426c at netisr_dispatch_src+0x100 > #10 0xc040be94 at ether_input+0x8c > #11 0xe2fd8130 at $a.8+0x128 > #12 0xc02a1ee0 at ithread_loop+0x268 > #13 0xc029e088 at fork_exit+0xa0 > #14 0xc05ca870 at swi_exit+0 > Fatal kernel mode data abort: 'Alignment Fault' on read > trapframe: 0xe2a0baf0 > FSR=0001, FAR=e3f02a56, spsr=2013 > r0 =, r1 =0001, r2 =0001, r3 =0a0a > r4 =, r5 =e3f02a6a, r6 =e3f02a56, r7 =0044 > r8 =0044, r9 =c0af955c, r10=0014, r11=e2a0bc10 > r12=, ssp=e2a0bb80, slr=c0441884, pc =c0475928 > > panic: Fatal abort That backtrace suggests an alignment fault in udp_input(), not an issue with if_epair. There’s not even any mention of if_epair in that backtrace, but I suppose it’s remotely possible that it’s in epair_intr(), calling epair_sintr() in #11. That would explain why the epair lock is held, at least. Note that the epair code has been substantially reworked recently so if you retry with a recent (post 24f0bfbad57b9c3cb9b543a60b2ba00e4812c286) build you won’t see the epair lock mentioned (assuming you can reproduce the panic), but again, it doesn’t look to be involved here anyway. Kristof
Kernel panic for if_epair
It's running 14.0-CURRENT armv7 main-n252983-d21e71efce39 Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex epairidx (epairidx) r = 0 (0xe2fe9160) locked @ /usr/src/sys/net/if_epair.c:165 stack backtrace: #0 0xc03558f8 at witness_debugger+0x7c #1 0xc0356b3c at witness_warn+0x3fc #2 0xc05eb3c8 at abort_handler+0x1d8 #3 0xc05ca8e0 at exception_exit+0 #4 0xc0475928 at udp_input+0x1c0 #5 0xc0441884 at ip_input+0xa18 #6 0xc041426c at netisr_dispatch_src+0x100 #7 0xc040b9a0 at ether_demux+0x1c8 #8 0xc040d22c at ether_nh_input+0x514 #9 0xc041426c at netisr_dispatch_src+0x100 #10 0xc040be94 at ether_input+0x8c #11 0xe2fd8130 at $a.8+0x128 #12 0xc02a1ee0 at ithread_loop+0x268 #13 0xc029e088 at fork_exit+0xa0 #14 0xc05ca870 at swi_exit+0 Fatal kernel mode data abort: 'Alignment Fault' on read trapframe: 0xe2a0baf0 FSR=0001, FAR=e3f02a56, spsr=2013 r0 =, r1 =0001, r2 =0001, r3 =0a0a r4 =, r5 =e3f02a6a, r6 =e3f02a56, r7 =0044 r8 =0044, r9 =c0af955c, r10=0014, r11=e2a0bc10 r12=, ssp=e2a0bb80, slr=c0441884, pc =c0475928 panic: Fatal abort cpuid = 0 time = 1645004889 KDB: stack backtrace: db_trace_self() at db_trace_self pc = 0xc05c7f34 lr = 0xc007ac48 (db_trace_self_wrapper+0x30) sp = 0xe2a0b8c8 fp = 0xe2a0b9e0 db_trace_self_wrapper() at db_trace_self_wrapper+0x30 pc = 0xc007ac48 lr = 0xc02e259c (vpanic+0x170) sp = 0xe2a0b9e8 fp = 0xe2a0ba08 r4 = 0x0100 r5 = 0x r6 = 0xc077f670 r7 = 0xc090d910 vpanic() at vpanic+0x170 pc = 0xc02e259c lr = 0xc02e234c (doadump) sp = 0xe2a0ba10 fp = 0xe2a0ba14 r4 = 0xe2a0baf0 r5 = 0x0013 r6 = 0xe3f02a56 r7 = 0x0001 r8 = 0x0001 r9 = 0xe294e000 r10 = 0xe3f02a56 doadump() at doadump pc = 0xc02e234c lr = 0xc05eba18 (abort_align) sp = 0xe2a0ba1c fp = 0xe2a0ba48 r4 = 0xe3f02a56 r5 = 0xe2a0ba14 r6 = 0xc02e234c r10 = 0xe2a0ba1c abort_align() at abort_align pc = 0xc05eba18 lr = 0xc05eb518 (abort_handler+0x328) sp = 0xe2a0ba50 fp = 0xe2a0bae8 r4 = 0x0013 r5 = 0xe3f02a56 abort_handler() at abort_handler+0x328 pc = 0xc05eb518 lr = 0xc05ca8e0 (exception_exit) sp = 0xe2a0baf0 fp = 0xe2a0bc10 r4 = 0x r5 = 0xe3f02a6a r6 = 0xe3f02a56 r7 = 0x0044 r8 = 0x0044 r9 = 0xc0af955c r10 = 0x0014 exception_exit() at exception_exit pc = 0xc05ca8e0 lr = 0xc0441884 (ip_input+0xa18) sp = 0xe2a0bb80 fp = 0xe2a0bc10 r0 = 0x r1 = 0x0001 r2 = 0x0001 r3 = 0x0a0a r4 = 0x r5 = 0xe3f02a6a r6 = 0xe3f02a56 r7 = 0x0044 r8 = 0x0044 r9 = 0xc0af955c r10 = 0x0014 r12 = 0x udp_input() at udp_input+0x1c0 pc = 0xc0475928 lr = 0xc0441884 (ip_input+0xa18) sp = 0xe2a0bc18 fp = 0xe2a0bc50 r4 = 0x00022e75 r5 = 0x r6 = 0x0014 r7 = 0x00fb r8 = 0xc090d910 r9 = 0xc09457fc r10 = 0xe3f02a56 ip_input() at ip_input+0xa18 pc = 0xc0441884 lr = 0xc041426c (netisr_dispatch_src+0x100) sp = 0xe2a0bc58 fp = 0xe2a0bc80 r4 = 0x0003a73b r5 = 0xe3f02a00 r6 = 0x r7 = 0xc0b5b4b4 r8 = 0xe4417ac0 r9 = 0x5e4a6f28 r10 = 0x0008 netisr_dispatch_src() at netisr_dispatch_src+0x100 pc = 0xc041426c lr = 0xc040b9a0 (ether_demux+0x1c8) sp = 0xe2a0bc88 fp = 0xe2a0bca0 r4 = 0xe3244400 r5 = 0xe3f02a00 r6 = 0x0800 r7 = 0xe3244400 r8 = 0xe4417ac0 r9 = 0x5e4a6f28 r10 = 0x0008 ether_demux() at ether_demux+0x1c8 pc = 0xc040b9a0 lr = 0xc040d22c (ether_nh_input+0x514) sp = 0xe2a0bca8 fp = 0xe2a0bd10 r4 = 0xe3244400 r5 = 0xe3f02a00 r6 = 0xe3f02a48 r7 = 0x ether_nh_input() at ether_nh_input+0x514 pc = 0xc040d22c lr = 0xc041426c (netisr_dispatch_src+0x100) sp = 0xe2a0bd18 fp = 0xe2a0bd40 r4 = 0x00050e88 r5 = 0xe3f02a00 r6 = 0x r7 = 0xc0b5b534 r8 = 0x5e4a6f28 r9 = 0x0020 r10 = 0x netisr_dispatch_src() at netisr_dispatch_src+0x100 pc = 0xc041426c lr = 0xc040be94 (ether_input+0x8c) sp = 0xe2a0bd48 fp = 0xe2a0bd80 r4 = 0xe3244400 r5 = 0x r6 = 0xe3f02a00 r7 = 0x r8 = 0x5e4a6f28 r9 = 0x0020 r10 = 0x ether_input() at ether_input+0x8c pc = 0xc040be94 lr = 0xe2fd8130 ($a.8+0x128) sp = 0xe2a0bd88 fp = 0xe2a0bdb8 r4 = 0xc57f5c8c r5 = 0x r6 = 0xe3244400 r7 = 0xc57f5c80 r8 = 0xe2fe9170 r9 = 0xc0938328 r10 = 0xe2a0bd88 $a.8() at $a.8+0x128 pc = 0xe2fd8130 lr = 0xc02a1ee0 (ithread_loop+0x268) sp =
