diff options
Diffstat (limited to 'results/classifier/118/none/1673130')
| -rw-r--r-- | results/classifier/118/none/1673130 | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/results/classifier/118/none/1673130 b/results/classifier/118/none/1673130 new file mode 100644 index 000000000..d3d47d853 --- /dev/null +++ b/results/classifier/118/none/1673130 @@ -0,0 +1,326 @@ +graphic: 0.721 +risc-v: 0.690 +performance: 0.684 +register: 0.678 +device: 0.646 +virtual: 0.645 +mistranslation: 0.632 +files: 0.627 +user-level: 0.618 +peripherals: 0.613 +assembly: 0.603 +debug: 0.601 +permissions: 0.597 +ppc: 0.592 +TCG: 0.592 +KVM: 0.590 +arm: 0.590 +VMM: 0.583 +PID: 0.580 +x86: 0.579 +vnc: 0.575 +network: 0.573 +hypervisor: 0.570 +socket: 0.563 +semantic: 0.558 +architecture: 0.550 +kernel: 0.513 +boot: 0.464 +i386: 0.345 + +qemu 2.7.0 receives SIGABRT in qemu_coroutine_enter() + +I've been experiencing frequent SIGABRTs (in addition to segfaults in #1671876) lately with qemu 2.7.0 running Ubuntu 16.04 guests. The crash usually happens in qemu_coroutine_enter(). I haven't seen this so far with any other guests or distros. + +Here is one stack trace I obtained +-------------------------------------------------------------------------- +(gdb) bt +#0 0x00007fd7cc676067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 +#1 0x00007fd7cc677448 in __GI_abort () at abort.c:89 +#2 0x0000556aed247b6c in qemu_coroutine_enter (co=0x7fd574300df0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +#3 0x0000556aed247e55 in qemu_co_queue_run_restart (co=0x7fd574300ce0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#4 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd574300ce0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#5 0x0000556aed247e74 in qemu_co_queue_run_restart (co=0x7fd589111670) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#6 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd589111670) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#7 0x0000556aed247e74 in qemu_co_queue_run_restart (co=0x7fd57430dba0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#8 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd57430dba0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#9 0x0000556aed247e74 in qemu_co_queue_run_restart (co=0x7fd589119130) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#10 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd589119130) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#11 0x0000556aed247e74 in qemu_co_queue_run_restart (co=0x7fd589117410) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#12 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd589117410) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#13 0x0000556aed247e74 in qemu_co_queue_run_restart (co=0x7fd577f00e00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#14 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd577f00e00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#15 0x0000556aed247fa0 in qemu_co_enter_next (queue=queue@entry=0x556aef34e5e0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:106 +#16 0x0000556aed1e6060 in timer_cb (blk=0x556aef34e590, is_write=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/block/throttle-groups.c:400 +#17 0x0000556aed1a3615 in timerlist_run_timers (timer_list=0x556aef3bad40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:528 +#18 0x0000556aed1a3679 in timerlistgroup_run_timers (tlg=tlg@entry=0x556af0738758) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:564 +#19 0x0000556aed1a3f47 in aio_dispatch (ctx=ctx@entry=0x556af0738610) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:357 +#20 0x0000556aed1a40e8 in aio_poll (ctx=0x556af0738610, blocking=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:479 +#21 0x0000556aed005c79 in iothread_run (opaque=0x556af07383c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/iothread.c:46 +#22 0x00007fd7cc9f40a4 in start_thread (arg=0x7fd7aafff700) at pthread_create.c:403 +#23 0x00007fd7cc72962d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 +-------------------------------------------------------------------------- + +The code crashes here +-------------------------------------------------------------------------- +void qemu_coroutine_enter(Coroutine *co) +{ + Coroutine *self = qemu_coroutine_self(); + CoroutineAction ret; + + trace_qemu_coroutine_enter(self, co, co->entry_arg); + + if (co->caller) { + fprintf(stderr, "Co-routine re-entered recursively\n"); + abort(); <--- Code aborts here + } + + [...] +} +-------------------------------------------------------------------------- + +Debugging further we see: +-------------------------------------------------------------------------- +(gdb) frame 2 +#2 0x0000556aed247b6c in qemu_coroutine_enter (co=0x7fd574300df0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +113 /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c: No such file or directory. +(gdb) print *co +$1 = {entry = 0x7fd793e95a58, entry_arg = 0x1, caller = 0x7fd793e95a38, pool_next = {sle_next = 0x10}, co_queue_wakeup = {sqh_first = 0x7fd6ebbd2000, sqh_last = 0x1000}, co_queue_next = { + sqe_next = 0x7fd6ebbd1000}} +(gdb) print *co->caller +$2 = {entry = 0x400400000001, entry_arg = 0xc546a20, caller = 0x0, pool_next = {sle_next = 0x0}, co_queue_wakeup = {sqh_first = 0x0, sqh_last = 0xffffea00061f7480}, co_queue_next = {sqe_next = 0x100000000000}} +(gdb) frame 4 +#4 0x0000556aed2479a9 in qemu_coroutine_enter (co=0x7fd574300ce0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +119 in /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c +(gdb) print *co +$3 = {entry = 0xc00000053, entry_arg = 0x7fd500000001, caller = 0x7fd574300d88, pool_next = {sle_next = 0x7fd574300d90}, co_queue_wakeup = {sqh_first = 0x7fd6ebbd1000, sqh_last = 0x7fd574300e00}, + co_queue_next = {sqe_next = 0xc546a20}} +(gdb) print *co->caller +$4 = {entry = 0x230095a58, entry_arg = 0x230095a38, caller = 0x187dd2000, pool_next = {sle_next = 0x187dd1000}, co_queue_wakeup = {sqh_first = 0x187dd0000, sqh_last = 0x187dcf000}, co_queue_next = { + sqe_next = 0x184970000}} +-------------------------------------------------------------------------- + +The question is, why did qemu_coroutine_enter not complain when in earlier calls co->caller was not NULL? + +Another stack trace: + +-------------------------------------------------------------------------- +(gdb) bt +#0 0x00007f2f34690067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 +#1 0x00007f2f34691448 in __GI_abort () at abort.c:89 +#2 0x00005629b8260b6c in qemu_coroutine_enter (co=0x7f2cd6a00940) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +#3 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cd6a00880) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#4 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cd6a00880) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#5 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cee202b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#6 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cee202b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#7 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cee2141d0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#8 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cee2141d0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#9 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf300b370) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#10 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf300b370) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#11 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf1a03560) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#12 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf1a03560) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#13 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf3e15ba0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#14 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf3e15ba0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#15 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2ce80087f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#16 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2ce80087f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#17 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cee20d9c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#18 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cee20d9c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#19 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2ceff04850) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#20 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2ceff04850) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#21 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf21061c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#22 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf21061c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#23 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf2105c00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#24 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf2105c00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#25 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf3e1d590) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#26 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf3e1d590) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#27 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf3e16a00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#28 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf3e16a00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#29 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2ce8004da0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#30 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2ce8004da0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#31 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf3e15dc0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#32 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf3e15dc0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#33 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2ccff00420) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#34 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2ccff00420) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#35 0x00005629b8260e74 in qemu_co_queue_run_restart (co=0x7f2cf1e04900) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#36 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cf1e04900) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#37 0x00005629b8260fa0 in qemu_co_enter_next (queue=queue@entry=0x5629ba5e35e0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:106 +#38 0x00005629b81ff060 in timer_cb (blk=0x5629ba5e3590, is_write=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/block/throttle-groups.c:400 +#39 0x00005629b81bc615 in timerlist_run_timers (timer_list=0x5629ba64fd40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:528 +#40 0x00005629b81bc679 in timerlistgroup_run_timers (tlg=tlg@entry=0x5629bb9cd758) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:564 +#41 0x00005629b81bcf47 in aio_dispatch (ctx=ctx@entry=0x5629bb9cd610) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:357 +#42 0x00005629b81bd0e8 in aio_poll (ctx=0x5629bb9cd610, blocking=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:479 +#43 0x00005629b801ec79 in iothread_run (opaque=0x5629bb9cd3c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/iothread.c:46 +#44 0x00007f2f34a0e0a4 in start_thread (arg=0x7f2f12fff700) at pthread_create.c:403 +#45 0x00007f2f3474362d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 +-------------------------------------------------------------------------- + +Looking at the data: +-------------------------------------------------------------------------- +(gdb) frame 2 +#2 0x00005629b8260b6c in qemu_coroutine_enter (co=0x7f2cd6a00940) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +113 /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c: No such file or directory. +(gdb) print *co +$1 = {entry = 0x7f2efbfbc4d8, entry_arg = 0x1, caller = 0x7f2efbfbc4b8, pool_next = {sle_next = 0x10}, co_queue_wakeup = {sqh_first = 0x7f2d217e2000, sqh_last = 0x1000}, co_queue_next = {sqe_next = 0x0}} +(gdb) print *co->caller +$2 = {entry = 0x1, entry_arg = 0xc21a480, caller = 0x0, pool_next = {sle_next = 0x0}, co_queue_wakeup = {sqh_first = 0x0, sqh_last = 0xffffea0000567882}, co_queue_next = {sqe_next = 0x100000000000}} +(gdb) frame 4 +#4 0x00005629b82609a9 in qemu_coroutine_enter (co=0x7f2cd6a00880) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +119 in /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c +(gdb) print *co +$3 = {entry = 0x200000046, entry_arg = 0x7f2c00000001, caller = 0x7f2cd6a00928, pool_next = {sle_next = 0x7f2cd6a00930}, co_queue_wakeup = {sqh_first = 0x0, sqh_last = 0x7f2cd6a008a0}, co_queue_next = { + sqe_next = 0xc21a480}} +(gdb) print *co->caller +$4 = {entry = 0x2301bc4d8, entry_arg = 0x2301bc4b8, caller = 0x159e2000, pool_next = {sle_next = 0x7f2efbfbc4d8}, co_queue_wakeup = {sqh_first = 0x1, sqh_last = 0x7f2efbfbc4b8}, co_queue_next = { + sqe_next = 0x10}} +-------------------------------------------------------------------------- + +Same as above. If co->caller is not NULL in earlier calls, why have they succeeded? + + + + +Third stack trace: + +-------------------------------------------------------------------------- +#0 0x00007f4d5ad6a067 in raise () from /lib/x86_64-linux-gnu/libc.so.6 +#1 0x00007f4d5ad6b448 in abort () from /lib/x86_64-linux-gnu/libc.so.6 +#2 0x0000562a4c582b6c in qemu_coroutine_enter (co=0x7f4b1bf0a900) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +#3 0x0000562a4c582e55 in qemu_co_queue_run_restart (co=0x7f4b1bf0a830) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#4 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1bf0a830) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#5 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b1bf0f4c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#6 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1bf0f4c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#7 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e07c40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#8 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e07c40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#9 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e11420) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#10 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e11420) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#11 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e18c30) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#12 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e18c30) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#13 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b1bf07ea0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#14 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1bf07ea0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#15 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b1000c0c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#16 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1000c0c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#17 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e11b10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#18 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e11b10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#19 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e10500) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#20 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e10500) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#21 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b1bf0a610) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#22 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1bf0a610) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#23 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e12820) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#24 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e12820) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#25 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b10002b10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#26 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b10002b10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#27 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b1000bfb0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#28 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1000bfb0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#29 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e103f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#30 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e103f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#31 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e078b0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#32 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e078b0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#33 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4adfe02b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#34 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4adfe02b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#35 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b15701ae0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#36 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b15701ae0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#37 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e162f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#38 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e162f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#39 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b10009fe0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#40 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b10009fe0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#41 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0b860) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#42 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0b860) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#43 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b23f035c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#44 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b23f035c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#45 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b19e030c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#46 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b19e030c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#47 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b100051b0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#48 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b100051b0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#49 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4adfe03970) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#50 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4adfe03970) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#51 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e11a00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#52 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e11a00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#53 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0e0a0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#54 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0e0a0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#55 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0ede0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#56 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0ede0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#57 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4aeff00860) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#58 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4aeff00860) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +---Type <return> to continue, or q <return> to quit--- +#59 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0d6f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#60 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0d6f0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#61 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0e490) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#62 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0e490) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#63 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e17370) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#64 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e17370) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#65 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e15c40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#66 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e15c40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#67 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b07f00a80) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#68 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b07f00a80) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#69 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b15703250) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#70 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b15703250) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#71 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e17870) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#72 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e17870) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#73 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b15703140) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#74 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b15703140) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#75 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e0c210) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#76 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e0c210) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#77 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e08650) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#78 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e08650) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#79 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e07470) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#80 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e07470) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#81 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b15e03a10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#82 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b15e03a10) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#83 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e11d90) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#84 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e11d90) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#85 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4b17e13d00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#86 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b17e13d00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#87 0x0000562a4c582e74 in qemu_co_queue_run_restart (co=0x7f4afbe02b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:60 +#88 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4afbe02b00) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +#89 0x0000562a4c582fa0 in qemu_co_enter_next (queue=queue@entry=0x562a4d8e65e0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine-lock.c:106 +#90 0x0000562a4c521060 in timer_cb (blk=0x562a4d8e6590, is_write=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/block/throttle-groups.c:400 +#91 0x0000562a4c4de615 in timerlist_run_timers (timer_list=0x562a4d952d40) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:528 +#92 0x0000562a4c4de679 in timerlistgroup_run_timers (tlg=tlg@entry=0x562a4ecd0758) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/qemu-timer.c:564 +#93 0x0000562a4c4def47 in aio_dispatch (ctx=ctx@entry=0x562a4ecd0610) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:357 +#94 0x0000562a4c4df0e8 in aio_poll (ctx=0x562a4ecd0610, blocking=<optimized out>) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/aio-posix.c:479 +#95 0x0000562a4c340c79 in iothread_run (opaque=0x562a4ecd03c0) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/iothread.c:46 +#96 0x00007f4d5b0e80a4 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 +#97 0x00007f4d5ae1d62d in clone () from /lib/x86_64-linux-gnu/libc.so.6 +-------------------------------------------------------------------------- + +Looking at the data: +-------------------------------------------------------------------------- +(gdb) frame 2 +#2 0x0000562a4c582b6c in qemu_coroutine_enter (co=0x7f4b1bf0a900) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:113 +113 /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c: No such file or directory. +(gdb) print *co +$1 = {entry = 0x7f4d23f20198, entry_arg = 0x1, caller = 0x7f4d23f20178, pool_next = {sle_next = 0x10}, co_queue_wakeup = {sqh_first = 0x7f4c605fb000, sqh_last = 0x1000}, co_queue_next = { + sqe_next = 0x7f4c584f5000}} +(gdb) print *co->caller +$2 = {entry = 0x400400000001, entry_arg = 0x5000ac0, caller = 0x0, pool_next = {sle_next = 0x0}, co_queue_wakeup = {sqh_first = 0x0, sqh_last = 0xffffea0005b1fec0}, co_queue_next = {sqe_next = 0x100000000000}} +(gdb) frame 4 +#4 0x0000562a4c5829a9 in qemu_coroutine_enter (co=0x7f4b1bf0a830) at /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c:119 +119 in /build/pb-qemu-pssKUp/pb-qemu-2.7.0/util/qemu-coroutine.c +(gdb) print *co +$5 = {entry = 0x7f4b180001d8, entry_arg = 0x7f4b180001d8, caller = 0x7f4b1bf0a8d8, pool_next = {sle_next = 0x7f4b1bf0a8e0}, co_queue_wakeup = {sqh_first = 0x7f4c584f5000, sqh_last = 0x7f4b1bf0a910}, + co_queue_next = {sqe_next = 0x5000ac0}} +(gdb) print *co->caller +$6 = {entry = 0x230120198, entry_arg = 0x230120178, caller = 0x16c7fb000, pool_next = {sle_next = 0x1646f5000}, co_queue_wakeup = {sqh_first = 0x1718c2000, sqh_last = 0x7f4d23f20198}, co_queue_next = { + sqe_next = 0x1}} +-------------------------------------------------------------------------- + +Same thing. + +On Wed, Mar 15, 2017 at 04:02:55PM -0000, Mohammed Gamal wrote: +> I've been experiencing frequent SIGABRTs (in addition to segfaults in +> #1671876) lately with qemu 2.7.0 running Ubuntu 16.04 guests. The crash +> usually happens in qemu_coroutine_enter(). I haven't seen this so far +> with any other guests or distros. + +Please report this against the Ubuntu package, not the upstream QEMU +project. + +If the abort reproduces with qemu.git/master or QEMU 2.9-rc0 then it +would be appropriate for the upstream QEMU bug tracker. + +Thanks, +Stefan + + +Fixed by commit 528f449f590829b53ea01ed91817a695b540421d + |