I reproduced the problem and collected some interesting information: backtrace from the hanging "snap run ..."
Apr 08 18:45:22 test-snapd lxd.daemon[1254]: SIGABRT: abort Apr 08 18:45:22 test-snapd lxd.daemon[1254]: PC=0xaaaad3c56de4 m=0 sigcode=0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: goroutine 0 [idle]: Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.futex(0xaaaad47faa88, 0x0, 0x0, 0x0, 0xaaaa00000000, 0xaaaad3c1de38, 0xaaaad47fa5e8, 0x0, 0x0, 0xaaaad3c326e8, ...) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/sys_linux_arm64.s:321 +0x1c Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.futexsleep(0xaaaad47faa88, 0xaaaa00000000, 0xffffffffffffffff) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/os_linux.go:45 +0x3c Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.notesleep(0xaaaad47faa88) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/lock_futex.go:151 +0x84 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.stopm() Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/proc.go:1952 +0xa0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.findrunnable(0x442003c000, 0x0) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/proc.go:2415 +0x514 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.schedule() Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/proc.go:2541 +0xe8 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.park_m(0x44203c8300) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/proc.go:2604 +0x90 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: runtime.mcall(0x0) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/asm_arm64.s:169 +0x50 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: goroutine 1 [select]: Apr 08 18:45:22 test-snapd lxd.daemon[1254]: github.com/snapcore/snapd/client.(*Client).do(0x44201149a0, 0xaaaad4116c66, 0x3, 0xaaaad41220ce, 0xf, 0x0, 0x0, 0x0, 0x0, 0xaaaad43dd140, ...) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/client/client.go:334 +0x1f8 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: github.com/snapcore/snapd/client.(*Client).doSync(0x44201149a0, 0xaaaad4116c66, 0x3, 0xaaaad41220ce, 0xf, 0x0, 0x0, 0x0, 0x0, 0xaaaad438ffa0, ...) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/client/client.go:374 +0x8c Apr 08 18:45:22 test-snapd lxd.daemon[1254]: github.com/snapcore/snapd/client.(*Client).SysInfo(0x44201149a0, 0x0, 0xaaaad44c1ee0, 0x44203e4430) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/client/client.go:655 +0x80 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: main.maybeWaitForSecurityProfileRegeneration(0x44201149a0, 0x442027b9c8, 0xaaaad3cf2768) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/cmd/snap/cmd_run.go:149 +0xd4 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: main.(*cmdRun).Execute(0x4420318310, 0x4420346af0, 0x0, 0x2, 0x4420318310, 0x1) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/cmd/snap/cmd_run.go:185 +0x10c Apr 08 18:45:22 test-snapd lxd.daemon[1254]: github.com/snapcore/snapd/vendor/github.com/jessevdk/go-flags.(*Parser).ParseArgs(0x44202e4ee0, 0x4420030110, 0x3, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/vendor/github.com/jessevdk/go-flags/parser.go:333 +0x678 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: github.com/snapcore/snapd/vendor/github.com/jessevdk/go-flags.(*Parser).Parse(0x44202e4ee0, 0x44202e4ee0, 0xaaaad47fa940, 0xffff84495000, 0x0, 0x4420105a78) Apr 08 18:45:22 test-snapd systemd[1]: snap.lxd.daemon.service: Control process exited, code=exited status=2 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/vendor/github.com/jessevdk/go-flags/parser.go:190 +0x70 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: main.run(0x4400000000, 0xaaaad44bd4c8) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/cmd/snap/main.go:515 +0x3c Apr 08 18:45:22 test-snapd lxd.daemon[1254]: main.main() Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /build/snapd-C2KffO/snapd-2.44.1/_build/src/github.com/snapcore/snapd/cmd/snap/main.go:482 +0x2a0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: goroutine 5 [syscall, 7 minutes]: Apr 08 18:45:22 test-snapd lxd.daemon[1254]: os/signal.signal_recv(0x0) Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/runtime/sigqueue.go:139 +0xc8 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: os/signal.loop() Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/os/signal/signal_unix.go:22 +0x18 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: created by os/signal.init.0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: /usr/lib/go-1.10/src/os/signal/signal_unix.go:28 +0x30 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r0 0xaaaad47faa88 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r1 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r2 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r3 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r4 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r5 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r6 0x14 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r7 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r8 0x62 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r9 0xa Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r10 0x8 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r11 0x4420030040 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r12 0x2 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r13 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r14 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r15 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r16 0xffffdda95ab0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r17 0x44203f25a0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r18 0xffff84628a70 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r19 0x6e Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r20 0x44202bc1d0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r21 0x44202c8cd8 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r22 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r23 0xaaaad47bd1a0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r24 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r25 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r26 0xffffdda95d90 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r27 0x0 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r28 0xaaaad47fa200 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: r29 0xffffdda95e70 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: lr 0xaaaad3c2a7f4 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: sp 0xffffdda95c60 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: pc 0xaaaad3c56de4 Apr 08 18:45:22 test-snapd lxd.daemon[1254]: fault 0x0 Time of the current revision of the core snap being unmounted, correlated with the re-exec operation: Apr 08 18:37:45.080849 test-snapd lxd.daemon[1254]: cmd_linux.go:224: DEBUG: restarting into "/snap/core/current/usr/bin/snap" Apr 08 18:37:45.090599 test-snapd systemd[1]: Unmounting Mount unit for core, revision 8937... Apr 08 18:37:45.101991 test-snapd systemd[1]: Unmounted Mount unit for core, revision 8937. /proc/PID/maps of that process at the time of being stuck: root@test-snapd:~# cat /proc/1254/maps 4000000000-4000002000 rw-p 00000000 00:00 0 441ffc8000-4420700000 rw-p 00000000 00:00 0 aaaad38f6000-aaaad4223000 r-xp 00000000 07:00 2936 /usr/bin/snap aaaad4232000-aaaad47b3000 r--p 0092c000 07:00 2936 /usr/bin/snap aaaad47b3000-aaaad47f6000 rw-p 00ead000 07:00 2936 /usr/bin/snap aaaad47f6000-aaaad481b000 rw-p 00000000 00:00 0 aaaaf9a85000-aaaaf9aa6000 rw-p 00000000 00:00 0 [heap] ffff30000000-ffff30021000 rw-p 00000000 00:00 0 ffff30021000-ffff34000000 ---p 00000000 00:00 0 ffff34000000-ffff34021000 rw-p 00000000 00:00 0 ffff34021000-ffff38000000 ---p 00000000 00:00 0 ffff38000000-ffff38021000 rw-p 00000000 00:00 0 ffff38021000-ffff3c000000 ---p 00000000 00:00 0 ffff3e7fd000-ffff3e7fe000 ---p 00000000 00:00 0 ffff3e7fe000-ffff3effe000 rw-p 00000000 00:00 0 ffff3effe000-ffff3efff000 ---p 00000000 00:00 0 ffff3efff000-ffff3f7ff000 rw-p 00000000 00:00 0 ffff3f7ff000-ffff3f800000 ---p 00000000 00:00 0 ffff3f800000-ffff40000000 rw-p 00000000 00:00 0 ffff40000000-ffff40021000 rw-p 00000000 00:00 0 ffff40021000-ffff44000000 ---p 00000000 00:00 0 ffff44000000-ffff44021000 rw-p 00000000 00:00 0 ffff44021000-ffff48000000 ---p 00000000 00:00 0 ffff48000000-ffff48021000 rw-p 00000000 00:00 0 ffff48021000-ffff4c000000 ---p 00000000 00:00 0 ffff4c000000-ffff4c021000 rw-p 00000000 00:00 0 ffff4c021000-ffff50000000 ---p 00000000 00:00 0 ffff50000000-ffff50021000 rw-p 00000000 00:00 0 ffff50021000-ffff54000000 ---p 00000000 00:00 0 ffff54000000-ffff54021000 rw-p 00000000 00:00 0 ffff54021000-ffff58000000 ---p 00000000 00:00 0 ffff58000000-ffff58021000 rw-p 00000000 00:00 0 ffff58021000-ffff5c000000 ---p 00000000 00:00 0 ffff5c000000-ffff5c021000 rw-p 00000000 00:00 0 ffff5c021000-ffff60000000 ---p 00000000 00:00 0 ffff607f9000-ffff607fa000 ---p 00000000 00:00 0 ffff607fa000-ffff60ffa000 rw-p 00000000 00:00 0 ffff60ffa000-ffff60ffb000 ---p 00000000 00:00 0 ffff60ffb000-ffff617fb000 rw-p 00000000 00:00 0 ffff617fb000-ffff617fc000 ---p 00000000 00:00 0 ffff617fc000-ffff61ffc000 rw-p 00000000 00:00 0 ffff61ffc000-ffff61ffd000 ---p 00000000 00:00 0 ffff61ffd000-ffff627fd000 rw-p 00000000 00:00 0 ffff627fd000-ffff627fe000 ---p 00000000 00:00 0 ffff627fe000-ffff62ffe000 rw-p 00000000 00:00 0 ffff62ffe000-ffff62fff000 ---p 00000000 00:00 0 ffff62fff000-ffff637ff000 rw-p 00000000 00:00 0 ffff637ff000-ffff63800000 ---p 00000000 00:00 0 ffff63800000-ffff64000000 rw-p 00000000 00:00 0 ffff64000000-ffff64021000 rw-p 00000000 00:00 0 ffff64021000-ffff68000000 ---p 00000000 00:00 0 ffff68000000-ffff68021000 rw-p 00000000 00:00 0 ffff68021000-ffff6c000000 ---p 00000000 00:00 0 ffff6c000000-ffff6c021000 rw-p 00000000 00:00 0 ffff6c021000-ffff70000000 ---p 00000000 00:00 0 ffff70000000-ffff70021000 rw-p 00000000 00:00 0 ffff70021000-ffff74000000 ---p 00000000 00:00 0 ffff74000000-ffff74021000 rw-p 00000000 00:00 0 ffff74021000-ffff78000000 ---p 00000000 00:00 0 ffff78000000-ffff78021000 rw-p 00000000 00:00 0 ffff78021000-ffff7c000000 ---p 00000000 00:00 0 ffff7c000000-ffff7c021000 rw-p 00000000 00:00 0 ffff7c021000-ffff80000000 ---p 00000000 00:00 0 ffff80134000-ffff80374000 rw-p 00000000 00:00 0 ffff80374000-ffff80375000 ---p 00000000 00:00 0 ffff80375000-ffff80b75000 rw-p 00000000 00:00 0 ffff80b75000-ffff80b76000 ---p 00000000 00:00 0 ffff80b76000-ffff81376000 rw-p 00000000 00:00 0 ffff81376000-ffff81380000 r-xp 00000000 08:02 1356 /lib/aarch64-linux-gnu/libnss_files-2.27.so ffff81380000-ffff8138f000 ---p 0000a000 08:02 1356 /lib/aarch64-linux-gnu/libnss_files-2.27.so ffff8138f000-ffff81390000 r--p 00009000 08:02 1356 /lib/aarch64-linux-gnu/libnss_files-2.27.so ffff81390000-ffff81391000 rw-p 0000a000 08:02 1356 /lib/aarch64-linux-gnu/libnss_files-2.27.so ffff81391000-ffff81397000 rw-p 00000000 00:00 0 ffff81397000-ffff813a9000 r-xp 00000000 08:02 1353 /lib/aarch64-linux-gnu/libnsl-2.27.so ffff813a9000-ffff813b8000 ---p 00012000 08:02 1353 /lib/aarch64-linux-gnu/libnsl-2.27.so ffff813b8000-ffff813b9000 r--p 00011000 08:02 1353 /lib/aarch64-linux-gnu/libnsl-2.27.so ffff813b9000-ffff813ba000 rw-p 00012000 08:02 1353 /lib/aarch64-linux-gnu/libnsl-2.27.so ffff813ba000-ffff813bc000 rw-p 00000000 00:00 0 ffff813bc000-ffff813c6000 r-xp 00000000 08:02 1358 /lib/aarch64-linux-gnu/libnss_nis-2.27.so ffff813c6000-ffff813d5000 ---p 0000a000 08:02 1358 /lib/aarch64-linux-gnu/libnss_nis-2.27.so ffff813d5000-ffff813d6000 r--p 00009000 08:02 1358 /lib/aarch64-linux-gnu/libnss_nis-2.27.so ffff813d6000-ffff813d7000 rw-p 0000a000 08:02 1358 /lib/aarch64-linux-gnu/libnss_nis-2.27.so ffff813d7000-ffff813de000 r-xp 00000000 08:02 1354 /lib/aarch64-linux-gnu/libnss_compat-2.27.so ffff813de000-ffff813ed000 ---p 00007000 08:02 1354 /lib/aarch64-linux-gnu/libnss_compat-2.27.so ffff813ed000-ffff813ee000 r--p 00006000 08:02 1354 /lib/aarch64-linux-gnu/libnss_compat-2.27.so ffff813ee000-ffff813ef000 rw-p 00007000 08:02 1354 /lib/aarch64-linux-gnu/libnss_compat-2.27.so ffff813ef000-ffff813f0000 ---p 00000000 00:00 0 ffff813f0000-ffff81c70000 rw-p 00000000 00:00 0 ffff81c70000-ffff81c71000 ---p 00000000 00:00 0 ffff81c71000-ffff82471000 rw-p 00000000 00:00 0 ffff82471000-ffff82472000 ---p 00000000 00:00 0 ffff82472000-ffff82c72000 rw-p 00000000 00:00 0 ffff82c72000-ffff82c73000 ---p 00000000 00:00 0 ffff82c73000-ffff83473000 rw-p 00000000 00:00 0 ffff83473000-ffff83474000 ---p 00000000 00:00 0 ffff83474000-ffff83c74000 rw-p 00000000 00:00 0 ffff83c74000-ffff83c75000 ---p 00000000 00:00 0 ffff83c75000-ffff844d5000 rw-p 00000000 00:00 0 ffff844d5000-ffff84615000 r-xp 00000000 08:02 1319 /lib/aarch64-linux-gnu/libc-2.27.so ffff84615000-ffff84624000 ---p 00140000 08:02 1319 /lib/aarch64-linux-gnu/libc-2.27.so ffff84624000-ffff84628000 r--p 0013f000 08:02 1319 /lib/aarch64-linux-gnu/libc-2.27.so ffff84628000-ffff8462a000 rw-p 00143000 08:02 1319 /lib/aarch64-linux-gnu/libc-2.27.so ffff8462a000-ffff8462e000 rw-p 00000000 00:00 0 ffff8462e000-ffff84645000 r-xp 00000000 08:02 1367 /lib/aarch64-linux-gnu/libpthread-2.27.so ffff84645000-ffff84654000 ---p 00017000 08:02 1367 /lib/aarch64-linux-gnu/libpthread-2.27.so ffff84654000-ffff84655000 r--p 00016000 08:02 1367 /lib/aarch64-linux-gnu/libpthread-2.27.so ffff84655000-ffff84656000 rw-p 00017000 08:02 1367 /lib/aarch64-linux-gnu/libpthread-2.27.so ffff84656000-ffff8465a000 rw-p 00000000 00:00 0 ffff8465a000-ffff84677000 r-xp 00000000 08:02 1303 /lib/aarch64-linux-gnu/ld-2.27.so ffff8467c000-ffff84680000 rw-p 00000000 00:00 0 ffff84684000-ffff84685000 r--p 00000000 00:00 0 [vvar] ffff84685000-ffff84686000 r-xp 00000000 00:00 0 [vdso] ffff84686000-ffff84687000 r--p 0001c000 08:02 1303 /lib/aarch64-linux-gnu/ld-2.27.so ffff84687000-ffff84689000 rw-p 0001d000 08:02 1303 /lib/aarch64-linux-gnu/ld-2.27.so ffffdda76000-ffffdda97000 rw-p 00000000 00:00 0 [stack] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871652 Title: Daemon snaps not properly stopped in some cases To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1871652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
