./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2037141225 <...> 400 audit(1702216432.959:63): avc: denied { write } for pid=286 comm="sh" path="pipe:[604]" dev="pipefs" ino=604 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 13.264385][ T23] audit: type=1400 audit(1702216432.959:64): avc: denied { rlimitinh } for pid=286 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.267117][ T23] audit: type=1400 audit(1702216432.959:65): avc: denied { siginh } for pid=286 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.155' (ED25519) to the list of known hosts. execve("./syz-executor2037141225", ["./syz-executor2037141225"], 0x7ffe579a7c40 /* 10 vars */) = 0 brk(NULL) = 0x5555558cd000 brk(0x5555558cdd00) = 0x5555558cdd00 arch_prctl(ARCH_SET_FS, 0x5555558cd380) = 0 set_tid_address(0x5555558cd650) = 355 set_robust_list(0x5555558cd660, 24) = 0 rseq(0x5555558cdca0, 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-executor2037141225", 4096) = 28 getrandom("\x75\x1f\x3a\x0d\xb8\x39\xae\xd0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555558cdd00 brk(0x5555558eed00) = 0x5555558eed00 brk(0x5555558ef000) = 0x5555558ef000 mprotect(0x7f0681f08000, 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=0x5555558cd650) = 356 ./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x5555558cd660, 24) = 0 [pid 356] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 356] setsid() = 1 [pid 356] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 356] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 356] unshare(CLONE_NEWNS) = 0 [pid 356] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 356] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 356] unshare(CLONE_NEWCGROUP) = 0 [pid 356] unshare(CLONE_NEWUTS) = 0 [pid 356] unshare(CLONE_SYSVSEM) = 0 [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 356] getpid() = 1 [pid 356] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0f b6 04 28 84 c0 0f 85 47 08 00 00 8b 03 48 89 44 24 40 48 8b [ 22.854822][ T356] RSP: 0018:ffff8881dc75f060 EFLAGS: 00010202 [ 22.860817][ T356] RAX: 000000000000000e RBX: 0000000000000070 RCX: ffff8881dc719f80 [ 22.868626][ T356] RDX: 0000000000000000 RSI: ffff8881f21ef1be RDI: 000000000000ffff [ 22.876529][ T356] RBP: ffff8881dc75f2f0 R08: ffffffff8379c2ce R09: ffffffff837dfe9b [ 22.884336][ T356] R10: ffff8881dc719f80 R11: 0000000000000002 R12: 000000000000003e [ 22.892157][ T356] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881de396800 [ 22.899959][ T356] FS: 00005555558cd380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.908820][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.915241][ T356] CR2: 0000000020010000 CR3: 00000001dc574000 CR4: 00000000003406b0 [ 22.923048][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.930872][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.938666][ T356] Call Trace: [ 22.941803][ T356] ? __die+0xb4/0x100 [ 22.945635][ T356] ? die+0x26/0x50 [ 22.949182][ T356] ? do_general_protection+0x266/0x3c0 [ 22.954467][ T356] ? do_trap+0x340/0x340 [ 22.958548][ T356] ? skb_network_protocol+0x534/0x7a0 [ 22.963768][ T356] ? general_protection+0x28/0x30 [ 22.968646][ T356] ? skb_network_protocol+0x1ab/0x7a0 [ 22.973913][ T356] ? skb_segment+0xaee/0x3f30 [ 22.978439][ T356] ? skb_segment+0x2940/0x3f30 [ 22.983033][ T356] ? check_preemption_disabled+0x9f/0x320 [ 22.989196][ T356] ? prandom_u32+0x236/0x270 [ 22.993624][ T356] ? skb_gro_receive_list+0x4a0/0x4a0 [ 22.998824][ T356] udp6_ufo_fragment+0x866/0xcd0 [ 23.003597][ T356] ? udpv6_offload_exit+0x20/0x20 [ 23.008455][ T356] ? ipv6_gso_pull_exthdrs+0x423/0x470 [ 23.013748][ T356] ipv6_gso_segment+0x65e/0x1130 [ 23.018531][ T356] ? asan.module_ctor+0x10/0x10 [ 23.023209][ T356] ? asan.module_ctor+0x10/0x10 [ 23.027898][ T356] skb_mac_gso_segment+0x27c/0x490 [ 23.032845][ T356] ? skb_network_protocol+0x7a0/0x7a0 [ 23.038051][ T356] ? netif_skb_features+0x88e/0xba0 [ 23.043087][ T356] __skb_gso_segment+0x305/0x4a0 [ 23.047857][ T356] validate_xmit_skb+0x30a/0xc50 [ 23.052634][ T356] ? validate_xmit_skb_list+0x130/0x130 [ 23.058010][ T356] ? __do_page_fault+0x725/0xbb0 [ 23.062786][ T356] ? netdev_core_pick_tx+0xc7/0x2f0 [ 23.067820][ T356] __dev_queue_xmit+0xf7d/0x27e0 [ 23.072597][ T356] ? dev_queue_xmit+0x20/0x20 [ 23.077108][ T356] ? virtio_net_hdr_to_skb+0xa10/0x1130 [ 23.082494][ T356] packet_sendmsg+0x4747/0x6100 [ 23.087177][ T356] ? check_preemption_disabled+0x9f/0x320 [ 23.092730][ T356] ? avc_has_perm+0x21a/0x260 [ 23.097254][ T356] ? selinux_socket_sendmsg+0x243/0x340 [ 23.102623][ T356] ? selinux_socket_accept+0x5b0/0x5b0 [ 23.107952][ T356] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 23.112867][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 23.118296][ T356] ? cgroup_update_frozen+0x157/0xab0 [ 23.123493][ T356] ? compat_packet_setsockopt+0x160/0x160 [ 23.129034][ T356] ? ptrace_stop+0x6ee/0xa30 [ 23.133465][ T356] ? security_socket_sendmsg+0x7d/0xa0 [ 23.138748][ T356] ? compat_packet_setsockopt+0x160/0x160 [ 23.144305][ T356] __sys_sendto+0x4f3/0x6c0 [ 23.148679][ T356] ? __ia32_sys_getpeername+0x80/0x80 [ 23.153854][ T356] ? syscall_trace_enter+0x650/0x940 [ 23.158972][ T356] ? do_syscall_64+0x1c0/0x1c0 [ 23.163572][ T356] ? switch_fpu_return+0x1d4/0x410 [ 23.168518][ T356] ? fpu__clear+0x3c0/0x3c0 [ 23.172858][ T356] __x64_sys_sendto+0xda/0xf0 [ 23.177373][ T356] do_syscall_64+0xca/0x1c0 [ 23.181804][ T356] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.187523][ T356] Modules linked in: [ 23.191401][ T356] ---[ end trace a3432f496e43c9ce ]--- [ 23.196742][ T356] RIP: 0010:skb_segment+0x2940/0x3f30 [ 23.202062][ T356] Code: 89 bc 24 90 00 00 00 81 7c 24 3c ff ff 00 00 0f 85 6b e2 ff ff e8 90 63 ea fd 48 8b 44 24 78 48 8d 58 70 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 47 08 00 00 8b 03 48 89 44 24 40 48 8b [ 23.221484][ T356] RSP: 0018:ffff8881dc75f060 EFLAGS: 00010202 [ 23.227359][ T356] RAX: 000000000000000e RBX: 0000000000000070 RCX: ffff8881dc719f80 [ 23.235209][ T356] RDX: 0000000000000000 RSI: ffff8881f21ef1be RDI: 000000000000ffff [ 23.243003][ T356] RBP: ffff8881dc75f2f0 R08: ffffffff8379c2ce R09: ffffffff837dfe9b [ 23.250818][ T356] R10: ffff8881dc719f80 R11: 0000000000000002 R12: 000000000000003e [ 23.258609][ T356] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881de396800 [ 23.266550][ T356] FS: 00005555558cd380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.275292][ T356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.281721][ T356] CR2: 0000000020010000 CR3: 00000001dc574000 CR4: 00000000003406b0 [ 23.289530][ T356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.297317][ T356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.305162][ T356] Kernel panic - not syncing: Fatal exception in interrupt [ 23.312393][ T356] Kernel Offset: disabled [ 23.316510][ T356] Rebooting in 86400 seconds..