./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor313910049 <...> =284 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.804671][ T23] audit: type=1400 audit(1695019282.420:65): avc: denied { siginh } for pid=284 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.156943][ T289] sftp-server (289) used greatest stack depth: 23096 bytes left [ 14.160870][ T285] sshd (285) used greatest stack depth: 21912 bytes left Warning: Permanently added '10.128.1.47' (ED25519) to the list of known hosts. execve("./syz-executor313910049", ["./syz-executor313910049"], 0x7ffcf7b75800 /* 10 vars */) = 0 brk(NULL) = 0x555557553000 brk(0x555557553d00) = 0x555557553d00 arch_prctl(ARCH_SET_FS, 0x555557553380) = 0 set_tid_address(0x555557553650) = 355 set_robust_list(0x555557553660, 24) = 0 rseq(0x555557553ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor313910049", 4096) = 27 getrandom("\x9a\x11\x84\xa7\x37\xc3\x07\x3a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557553d00 brk(0x555557574d00) = 0x555557574d00 brk(0x555557575000) = 0x555557575000 mprotect(0x7f933dc58000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557553650) = 357 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x555557553660, 24) = 0 [pid 357] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setsid() = 1 [pid 357] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 357] unshare(CLONE_NEWNS) = 0 [pid 357] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 357] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 357] unshare(CLONE_NEWCGROUP) = 0 [pid 357] unshare(CLONE_NEWUTS) = 0 [pid 357] unshare(CLONE_SYSVSEM) = 0 [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] getpid() = 1 [pid 357] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 [ 22.448217][ T357] RSP: 0018:ffff8881dc1dedc8 EFLAGS: 00010293 [ 22.454119][ T357] RAX: ffffffff837d8b73 RBX: 000000000000007c RCX: ffff8881dc7cbf00 [ 22.461930][ T357] RDX: 0000000000000000 RSI: 000000000000007c RDI: 0000000000000529 [ 22.469740][ T357] RBP: 0000000000000529 R08: ffffffff837d85ef R09: ffffed103b83bdaa [ 22.477552][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f42d2930 [ 22.485365][ T357] R13: 0000000000000527 R14: ffff8881f42d28c0 R15: 1ffff1103e85a526 [ 22.493180][ T357] FS: 0000555557553380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 22.501944][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.508365][ T357] CR2: 0000000020001000 CR3: 00000001dc546000 CR4: 00000000003406a0 [ 22.516181][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.523988][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.531797][ T357] Call Trace: [ 22.534934][ T357] ? __die+0xb4/0x100 [ 22.538747][ T357] ? die+0x26/0x50 [ 22.542301][ T357] ? do_trap+0x1e7/0x340 [ 22.546393][ T357] ? skb_checksum_help+0x873/0x880 [ 22.551330][ T357] ? skb_checksum_help+0x873/0x880 [ 22.556288][ T357] ? do_invalid_op+0xfb/0x110 [ 22.560790][ T357] ? skb_checksum_help+0x873/0x880 [ 22.565740][ T357] ? invalid_op+0x1e/0x30 [ 22.569994][ T357] ? skb_checksum_help+0x2ef/0x880 [ 22.575030][ T357] ? skb_checksum_help+0x873/0x880 [ 22.579972][ T357] ? skb_checksum_help+0x873/0x880 [ 22.584920][ T357] ? skb_checksum_help+0x873/0x880 [ 22.589870][ T357] ip_do_fragment+0x15e/0x2200 [ 22.594682][ T357] ? ip_fragment+0x210/0x210 [ 22.599093][ T357] ? ip_frag_next+0xad0/0xad0 [ 22.603609][ T357] ? kmem_cache_free+0x10b/0x2c0 [ 22.608471][ T357] ? __ip_finish_output+0x457/0x710 [ 22.613596][ T357] ? ip_fragment+0x9a/0x210 [ 22.617927][ T357] __ip_finish_output+0x49c/0x710 [ 22.622792][ T357] ip_mc_output+0x3d4/0xa70 [ 22.627129][ T357] ? rt_set_nexthop+0x21b/0x700 [ 22.631830][ T357] ? ip_build_and_send_pkt+0xad0/0xad0 [ 22.637469][ T357] ? ip_mc_finish_output+0x340/0x340 [ 22.642753][ T357] ? __ip_local_out+0x4e8/0x4f0 [ 22.647641][ T357] ? ip_send_check+0xd0/0xd0 [ 22.652403][ T357] ? __ip_local_out+0x4f0/0x4f0 [ 22.657175][ T357] ? prandom_u32+0x236/0x270 [ 22.661687][ T357] iptunnel_xmit+0x476/0x850 [ 22.666116][ T357] ip_tunnel_xmit+0x1aa7/0x26a0 [ 22.671146][ T357] ? ip_tunnel_xmit+0x101/0x26a0 [ 22.675916][ T357] ? tnl_update_pmtu+0xbb0/0xbb0 [ 22.680779][ T357] ? gre_build_header+0x23f/0x7a0 [ 22.685638][ T357] ipgre_xmit+0x754/0xa50 [ 22.689809][ T357] dev_hard_start_xmit+0x1b7/0x6b0 [ 22.694753][ T357] __dev_queue_xmit+0x14da/0x27e0 [ 22.699619][ T357] ? dev_queue_xmit+0x20/0x20 [ 22.704129][ T357] ? virtio_net_hdr_to_skb+0x9c1/0x10c0 [ 22.709512][ T357] ? fanout_demux_rollover+0xc10/0xc10 [ 22.714814][ T357] packet_sendmsg+0x4722/0x60e0 [ 22.719502][ T357] ? avc_has_perm+0x21a/0x260 [ 22.724005][ T357] ? selinux_socket_sendmsg+0x243/0x340 [ 22.729483][ T357] ? selinux_socket_accept+0x5b0/0x5b0 [ 22.734774][ T357] ? rw_copy_check_uvector+0x2a3/0x2f0 [ 22.740063][ T357] ? compat_packet_setsockopt+0x160/0x160 [ 22.745616][ T357] ? _copy_from_iter_flushcache+0x9e/0xd80 [ 22.751390][ T357] ? security_socket_sendmsg+0x7d/0xa0 [ 22.756849][ T357] ? compat_packet_setsockopt+0x160/0x160 [ 22.762484][ T357] ____sys_sendmsg+0x5ac/0x8f0 [ 22.767083][ T357] ? __sys_sendmsg_sock+0x2b0/0x2b0 [ 22.772131][ T357] __sys_sendmsg+0x28b/0x380 [ 22.776544][ T357] ? ____sys_sendmsg+0x8f0/0x8f0 [ 22.781318][ T357] ? ptrace_notify+0x24c/0x350 [ 22.786815][ T357] ? __do_page_fault+0x725/0xbb0 [ 22.792199][ T357] do_syscall_64+0xca/0x1c0 [ 22.796505][ T357] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 22.802230][ T357] Modules linked in: [ 22.806042][ T357] ---[ end trace c0039dba637ace01 ]--- [ 22.811339][ T357] RIP: 0010:skb_checksum_help+0x873/0x880 [ 22.816814][ T357] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c d0 fc ff ff 48 89 df e8 de 6a 16 fe e9 c3 fc ff ff e8 a4 aa e6 fd 0f 0b e8 9d aa e6 fd <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 41 55 41 54 53 [ 22.836468][ T357] RSP: 0018:ffff8881dc1dedc8 EFLAGS: 00010293 [ 22.842371][ T357] RAX: ffffffff837d8b73 RBX: 000000000000007c RCX: ffff8881dc7cbf00 [ 22.850162][ T357] RDX: 0000000000000000 RSI: 000000000000007c RDI: 0000000000000529 [ 22.857978][ T357] RBP: 0000000000000529 R08: ffffffff837d85ef R09: ffffed103b83bdaa [ 22.865793][ T357] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f42d2930 [ 22.873601][ T357] R13: 0000000000000527 R14: ffff8881f42d28c0 R15: 1ffff1103e85a526 [ 22.881415][ T357] FS: 0000555557553380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 22.890179][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.897295][ T357] CR2: 0000000020001000 CR3: 00000001dc546000 CR4: 00000000003406a0 [ 22.905094][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.913039][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.921389][ T357] Kernel panic - not syncing: Fatal exception in interrupt [ 22.928755][ T357] Kernel Offset: disabled [ 22.932872][ T357] Rebooting in 86400 seconds..