./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4095118559 <...> DUID 00:04:b0:7e:30:9f:4d:11:81:da:bf:2d:3d:77:4c:17:c1:ba forked to background, child pid 4646 [ 38.026472][ T4647] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.046246][ T4647] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.98' (ECDSA) to the list of known hosts. execve("./syz-executor4095118559", ["./syz-executor4095118559"], 0x7ffd66359cc0 /* 10 vars */) = 0 brk(NULL) = 0x555555b08000 brk(0x555555b08c40) = 0x555555b08c40 arch_prctl(ARCH_SET_FS, 0x555555b08300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4095118559", 4096) = 28 brk(0x555555b29c40) = 0x555555b29c40 brk(0x555555b2a000) = 0x555555b2a000 mprotect(0x7f8efa2a0000, 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./strace-static-x86_64: Process 5073 attached , child_tidptr=0x555555b085d0) = 5073 [pid 5073] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setsid() = 1 [pid 5073] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5073] unshare(CLONE_NEWNS) = 0 [pid 5073] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5073] unshare(CLONE_NEWIPC) = 0 [pid 5073] unshare(CLONE_NEWCGROUP) = 0 [pid 5073] unshare(CLONE_NEWUTS) = 0 [pid 5073] unshare(CLONE_SYSVSEM) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "16777216", 8) = 8 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "536870912", 9) = 9 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "8192", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5073] close(3) = 0 [pid 5073] getpid() = 1 [pid 5073] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 89 54 24 20 4c 89 44 24 18 e8 4c b1 86 f9 48 8b 54 24 20 [ 64.352385][ T5073] RSP: 0018:ffffc90003a6f6b8 EFLAGS: 00010293 [ 64.358472][ T5073] RAX: 0000000000000000 RBX: ffffc90003a6f818 RCX: 0000000000000000 [ 64.366435][ T5073] RDX: ffff8880772c0000 RSI: ffffffff8848a583 RDI: 0000000000000005 [ 64.374391][ T5073] RBP: 00000000000005c8 R08: 0000000000000005 R09: 0000000000000000 [ 64.382349][ T5073] R10: 00000000fffffff2 R11: 0000000000000000 R12: ffff888026841dc0 [ 64.390305][ T5073] R13: ffffc90003a6f81c R14: 00000000fffffff2 R15: ffffc90003a6f830 [ 64.398272][ T5073] FS: 0000555555b08300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 64.407220][ T5073] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.413824][ T5073] CR2: 00005622b70166a8 CR3: 000000007780f000 CR4: 00000000003506e0 [ 64.421818][ T5073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.429804][ T5073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.437797][ T5073] Call Trace: [ 64.441084][ T5073] [ 64.444020][ T5073] ip_do_fragment+0x873/0x17d0 [ 64.448803][ T5073] ? ip_fragment.constprop.0+0x240/0x240 [ 64.454453][ T5073] ? ip_frag_next+0xa50/0xa50 [ 64.459139][ T5073] ? nf_hook_slow+0xfd/0x1f0 [ 64.463743][ T5073] ? nf_hook+0x20d/0x5b0 [ 64.468004][ T5073] ? ip_skb_dst_mtu+0x491/0xcc0 [ 64.472864][ T5073] ip_fragment.constprop.0+0x16b/0x240 [ 64.478343][ T5073] __ip_finish_output+0x2de/0x650 [ 64.483380][ T5073] ip_finish_output+0x31/0x280 [ 64.488154][ T5073] ip_mc_output+0x21f/0x710 [ 64.492825][ T5073] ip_push_pending_frames+0x129/0x2b0 [ 64.498233][ T5073] raw_sendmsg+0x1338/0x2df0 [ 64.502944][ T5073] ? raw_recvmsg+0x790/0x790 [ 64.507554][ T5073] ? aa_profile_af_perm+0x470/0x470 [ 64.512774][ T5073] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 64.518694][ T5073] ? tomoyo_unix_entry+0x600/0x600 [ 64.523820][ T5073] ? finish_task_switch.isra.0+0x2b0/0xc80 [ 64.529665][ T5073] ? aa_sk_perm+0x313/0xab0 [ 64.534183][ T5073] ? aa_af_perm+0x240/0x240 [ 64.538707][ T5073] inet_sendmsg+0x9d/0xe0 [ 64.543119][ T5073] ? inet_send_prepare+0x4e0/0x4e0 [ 64.548262][ T5073] sock_sendmsg+0xde/0x190 [ 64.552697][ T5073] __sys_sendto+0x23a/0x340 [ 64.557217][ T5073] ? __ia32_sys_getpeername+0xb0/0xb0 [ 64.562614][ T5073] ? do_raw_spin_lock+0x124/0x2b0 [ 64.567649][ T5073] ? _raw_spin_lock_irq+0x45/0x50 [ 64.572725][ T5073] ? _raw_spin_unlock_irq+0x23/0x50 [ 64.578025][ T5073] ? lockdep_hardirqs_on+0x7d/0x100 [ 64.583233][ T5073] __x64_sys_sendto+0xe1/0x1b0 [ 64.588028][ T5073] ? syscall_trace_enter.constprop.0+0xb0/0x250 [ 64.594292][ T5073] do_syscall_64+0x39/0xb0 [ 64.598817][ T5073] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.604722][ T5073] RIP: 0033:0x7f8efa22c499 [ 64.609140][ T5073] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 64.628757][ T5073] RSP: 002b:00007ffd43ed3198 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 64.637188][ T5073] RAX: ffffffffffffffda RBX: 00007ffd43ed31b8 RCX: 00007f8efa22c499 [ 64.645162][ T5073] RDX: 000000000000fcf2 RSI: 0000000020000380 RDI: 0000000000000003 [ 64.653233][ T5073] RBP: 0000000000000003 R08: 0000000020001380 R09: 000000000000006e [ 64.661206][ T5073] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd43ed31c0 [ 64.669180][ T5073] R13: 00007ffd43ed31e0 R14: 0000000000000000 R15: 0000000000000000 [ 64.677161][ T5073] [ 64.680178][ T5073] Modules linked in: [ 64.692458][ T5073] ---[ end trace 0000000000000000 ]--- [ 64.698753][ T5073] RIP: 0010:ip_frag_next+0xa03/0xa50 [ 64.704130][ T5073] Code: e8 82 b1 86 f9 e9 95 fa ff ff 48 8b 3c 24 e8 74 b1 86 f9 e9 5b f8 ff ff 4c 89 ff e8 67 b1 86 f9 e9 1f f8 ff ff e8 3d ad 38 f9 <0f> 0b 48 89 54 24 20 4c 89 44 24 18 e8 4c b1 86 f9 48 8b 54 24 20 [ 64.723813][ T5073] RSP: 0018:ffffc90003a6f6b8 EFLAGS: 00010293 [ 64.729889][ T5073] RAX: 0000000000000000 RBX: ffffc90003a6f818 RCX: 0000000000000000 [ 64.738261][ T5073] RDX: ffff8880772c0000 RSI: ffffffff8848a583 RDI: 0000000000000005 [ 64.746648][ T5073] RBP: 00000000000005c8 R08: 0000000000000005 R09: 0000000000000000 [ 64.754795][ T5073] R10: 00000000fffffff2 R11: 0000000000000000 R12: ffff888026841dc0 [ 64.762869][ T5073] R13: ffffc90003a6f81c R14: 00000000fffffff2 R15: ffffc90003a6f830 [ 64.771067][ T5073] FS: 0000555555b08300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 64.780250][ T5073] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.787000][ T5073] CR2: 0000557162e92068 CR3: 000000007780f000 CR4: 00000000003506e0 [ 64.795578][ T5073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.803868][ T5073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.811869][ T5073] Kernel panic - not syncing: Fatal exception [ 64.818099][ T5073] Kernel Offset: disabled [ 64.822446][ T5073] Rebooting in 86400 seconds..