<div dir="ltr"><div>Hi again, <br><br></div>Just in case it is useful, this is strace on the virtiofsd process: <br><br>sudo strace -f -p 124977<br><br>strace: Process 124977 attached with 2 threads<br>[pid 124978] epoll_wait(6 <unfinished ...><br>[pid 124977] accept4(4, {sa_family=AF_UNIX}, [110 => 2], SOCK_CLOEXEC) = 11<br>[pid 124977] fcntl(11, F_DUPFD_CLOEXEC, 3) = 12<br>[pid 124977] mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5564baa000<br>[pid 124977] madvise(0x7f5564baa000, 4096, MADV_GUARD_INSTALL) = 0<br>[pid 124977] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0<br>[pid 124977] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f5564daa990, parent_tid=0x7f5564daa990, exit_signal=0, stack=0x7f5564baa000, stack_size=0x1ffe00, tls=0x7f5564daa6c0} => {parent_tid=[3]}, 88) = 3<br>strace: Process 125168 attached<br>[pid 124977] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0<br>[pid 125168] rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053 <unfinished ...><br>[pid 124977] write(2, "[2026-08-10T09:52:18Z INFO virt"..., 76 <unfinished ...><br>[pid 125168] <... rseq resumed>) = 0<br>[pid 124977] <... write resumed>) = 76<br>[pid 125168] set_robust_list(0x7f5564daa9a0, 24 <unfinished ...><br>[pid 124977] futex(0x7f5564daa990, FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, 3, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...><br>[pid 125168] <... set_robust_list resumed>) = 0<br>[pid 125168] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0<br>[pid 125168] prctl(PR_SET_NAME, "virtiofsd-backe"...) = 0<br>[pid 125168] mmap(NULL, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5558000000<br>[pid 125168] munmap(0x7f555c000000, 67108864) = 0<br>[pid 125168] mprotect(0x7f5558000000, 135168, PROT_READ|PROT_WRITE) = 0<br>[pid 125168] sched_getaffinity(3, 32, [0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]) = 8<br>[pid 125168] gettid() = 3<br>[pid 125168] sigaltstack(NULL, {ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=0}) = 0<br>[pid 125168] mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f556525f000<br>[pid 125168] mprotect(0x7f556525f000, 4096, PROT_NONE) = 0<br>[pid 125168] sigaltstack({ss_sp=0x7f5565260000, ss_flags=0, ss_size=8192}, NULL) = 0<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\1\0\0\0\1\0\0\0\0\0\0\0", iov_len=12}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 12<br>[pid 125168] sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\1\0\0\0\5\0\0\0\10\0\0\0", iov_len=12}, {iov_base="\0\0\0t\1\0\0\0", iov_len=8}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 20<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\17\0\0\0\1\0\0\0\0\0\0\0", iov_len=12}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 12<br>[pid 125168] sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\17\0\0\0\5\0\0\0\10\0\0\0", iov_len=12}, {iov_base="+\244\10\0\0\0\0\0", iov_len=8}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 20<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\20\0\0\0\1\0\0\0\10\0\0\0", iov_len=12}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 12<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="+\244\10\0\0\0\0\0", iov_len=8}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 8<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\21\0\0\0\1\0\0\0\0\0\0\0", iov_len=12}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 12<br>[pid 125168] sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\21\0\0\0\5\0\0\0\10\0\0\0", iov_len=12}, {iov_base="\2\0\0\0\0\0\0\0", iov_len=8}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 20<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="$\0\0\0\1\0\0\0\0\0\0\0", iov_len=12}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 12<br>[pid 125168] sendmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="$\0\0\0\5\0\0\0\10\0\0\0", iov_len=12}, {iov_base="\375\1\0\0\0\0\0\0", iov_len=8}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 20<br>[pid 125168] recvmsg(11, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\25\0\0\0\t\0\0\0\0\0\0\0", iov_len=12}], msg_iovlen=1, msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[13]}], msg_controllen=24, msg_flags=0}, 0) = 12<br>[pid 125168] getsockopt(13, SOL_SOCKET, SO_DOMAIN, [0], [4]) = 55<br>[pid 124978] <... epoll_wait resumed> <unfinished ...>) = ?<br>[pid 124977] <... futex resumed>) = ?<br>[pid 125168] +++ killed by SIGSYS (core dumped) +++<br>[pid 124978] +++ killed by SIGSYS (core dumped) +++<br><div><br></div><div><br></div><div>Thanks!</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Aug 10, 2026 at 11:51 AM Debian Bug Tracking System <<a href="mailto:owner@bugs.debian.org">owner@bugs.debian.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Thank you for filing a new Bug report with Debian.<br>
<br>
You can follow progress on this Bug here: 1144050: <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1144050" rel="noreferrer" target="_blank">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1144050</a>.<br>
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1144050: <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1144050" rel="noreferrer" target="_blank">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1144050</a><br>
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</blockquote></div><div><br clear="all"></div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>Jonás Andradas<br><br>GPG Fingerprint: 678F 7BD0 83C3 28CE 9E8F<br> 3F7F 4D87 9996 E0C6 9372<br></div></div></div>