Core dump lxcfs #693
Description
Frequent core dumps of lxcfs on Fedora Linux.
Nov 19 20:04:03 HOSTNAME systemd-coredump[75744]: [🡕] Process 125288 (lxcfs) of user 0 dumped core.
Module /usr/bin/lxcfs from rpm lxcfs-6.0.5-1.fc42.x86_64
Module liblxcfs.so from rpm lxcfs-6.0.5-1.fc42.x86_64
Module libfuse.so.2 from rpm fuse-2.9.9-23.fc42.x86_64
Stack trace of thread 75533:
#0 0x00007f5acdbb83e1 _int_malloc (libc.so.6 + 0x813e1)
#1 0x00007f5acdbb9c2e __libc_malloc (libc.so.6 + 0x82c2e)
#2 0x00007f5acdd5d43d fuse_fs_read_buf (libfuse.so.2 + 0x843d)
#3 0x00007f5acdd62179 fuse_lib_read (libfuse.so.2 + 0xd179)
#4 0x00007f5acdd69a5d do_read (libfuse.so.2 + 0x14a5d)
#5 0x00007f5acdd6de43 fuse_ll_process_buf (libfuse.so.2 + 0x18e43)
#6 0x00007f5acdd69071 fuse_do_work (libfuse.so.2 + 0x14071)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75147:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75159:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 125291:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdbf5c22 clock_nanosleep@GLIBC_2.2.5 (libc.so.6 + 0xbec22)
#3 0x00007f5acdc01c37 __nanosleep (libc.so.6 + 0xcac37)
#4 0x00007f5acdc2beba usleep (libc.so.6 + 0xf4eba)
#5 0x00007f5acdb15e87 load_begin (liblxcfs.so + 0x1ae87)
#6 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#7 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75140:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75237:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75536:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75531:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 125288:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba5dcc __futex_abstimed_wait_common (libc.so.6 + 0x6edcc)
#3 0x00007f5acdbb1368 __new_sem_wait_slow64.constprop.0 (libc.so.6 + 0x7a368)
#4 0x00007f5acdd68ce9 fuse_session_loop_mt (libfuse.so.2 + 0x13ce9)
#5 0x00007f5acdd6fd6e fuse_loop_mt (libfuse.so.2 + 0x1ad6e)
#6 0x00007f5acdd7043d fuse_main_common (libfuse.so.2 + 0x1b43d)
#7 0x000055d994a88ea2 main (/usr/bin/lxcfs + 0xea2)
#8 0x00007f5acdb3a575 __libc_start_call_main (libc.so.6 + 0x3575)
#9 0x00007f5acdb3a628 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3628)
#10 0x000055d994a89385 _start (/usr/bin/lxcfs + 0x1385)
Stack trace of thread 75534:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75239:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
Stack trace of thread 75537:
#0 0x00007f5acdbb1462 __syscall_cancel_arch (libc.so.6 + 0x7a462)
#1 0x00007f5acdba575c __internal_syscall_cancel (libc.so.6 + 0x6e75c)
#2 0x00007f5acdba57a4 __syscall_cancel (libc.so.6 + 0x6e7a4)
#3 0x00007f5acdc1f7fe read (libc.so.6 + 0xe87fe)
#4 0x00007f5acdd64b92 fuse_kern_chan_receive (libfuse.so.2 + 0xfb92)
#5 0x00007f5acdd6e4e5 fuse_ll_receive_buf (libfuse.so.2 + 0x194e5)
#6 0x00007f5acdd68ff6 fuse_do_work (libfuse.so.2 + 0x13ff6)
#7 0x00007f5acdba8f54 start_thread (libc.so.6 + 0x71f54)
#8 0x00007f5acdc2c32c __clone3 (libc.so.6 + 0xf532c)
ELF object binary architecture: AMD x86-64
Nov 19 20:04:03 HOSTNAME systemd[1]: lxcfs.service: Main process exited, code=dumped, status=11/SEGV
Nov 19 20:04:03 HOSTNAME systemd[1]: lxcfs.service: Failed with result 'core-dump'.
Nov 19 20:04:03 HOSTNAME systemd[1]: lxcfs.service: Consumed 20h 10min 47.645s CPU time, 51.5M memory peak, 6.5M memory swap peak.
Some versions:
# incus --version
6.18
# lxcfs --version
"6.0.5"
# uname -a
Linux HOSTNAME 6.16.10-200.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Oct 2 19:23:55 UTC 2025 x86_64 GNU/Linux
Happens for a long time, once in a while (between different OS versions and incus versions).
For a frequency example, it happened on Oct 28, Nov 01, Nov 19.