./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2531193003 <...> DUID 00:04:b5:83:26:17:e0:27:12:d6:a5:87:80:2d:51:b0:dc:e4 forked to background, child pid 3183 [ 26.257179][ T3184] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.260003][ T3184] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. execve("./syz-executor2531193003", ["./syz-executor2531193003"], 0x7fff12d18ea0 /* 10 vars */) = 0 brk(NULL) = 0x555555642000 brk(0x555555642c40) = 0x555555642c40 arch_prctl(ARCH_SET_FS, 0x555555642300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2531193003", 4096) = 28 brk(0x555555663c40) = 0x555555663c40 brk(0x555555664000) = 0x555555664000 mprotect(0x7fb4734aa000, 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 3605 attached , child_tidptr=0x5555556425d0) = 3605 [pid 3605] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3605] setsid() = 1 [pid 3605] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3605] unshare(CLONE_NEWNS) = 0 [pid 3605] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3605] unshare(CLONE_NEWIPC) = 0 [pid 3605] unshare(CLONE_NEWCGROUP) = 0 [pid 3605] unshare(CLONE_NEWUTS) = 0 [pid 3605] unshare(CLONE_SYSVSEM) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "16777216", 8) = 8 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "536870912", 9) = 9 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "8192", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3605] close(3) = 0 [pid 3605] getpid() = 1 [pid 3605] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 48 89 df e8 e7 20 68 fa e9 7f fd ff ff e8 fd 20 68 fa e9 48 [ 43.753443][ T3605] RSP: 0018:ffffc9000301f4b8 EFLAGS: 00010293 [ 43.759514][ T3605] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 43.767483][ T3605] RDX: ffff888018bc5880 RSI: ffffffff875dd94f RDI: 0000000000000003 [ 43.775455][ T3605] RBP: 000000000000e4e3 R08: 0000000000000fe0 R09: 000000000000e4e3 [ 43.783428][ T3605] R10: ffffffff875dd5ec R11: 0000000000000000 R12: 0000000000000fe0 [ 43.791489][ T3605] R13: ffff88801ef083c0 R14: 1ffff92000603e9b R15: 0000000000000012 [ 43.799467][ T3605] FS: 0000555555642300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 43.808401][ T3605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.815016][ T3605] CR2: 0000000020002000 CR3: 000000001fff1000 CR4: 00000000003506f0 [ 43.822991][ T3605] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.830960][ T3605] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.838932][ T3605] Call Trace: [ 43.842293][ T3605] [ 43.845227][ T3605] ? skb_eth_gso_segment+0x250/0x250 [ 43.850526][ T3605] __skb_gso_segment+0x327/0x6e0 [ 43.855475][ T3605] validate_xmit_skb+0x6bc/0xf10 [ 43.860425][ T3605] validate_xmit_skb_list+0xbc/0x120 [ 43.865723][ T3605] sch_direct_xmit+0x3d1/0xbe0 [ 43.870492][ T3605] ? lock_release+0x780/0x780 [ 43.875178][ T3605] ? lock_release+0x780/0x780 [ 43.879863][ T3605] ? dev_watchdog+0x8f0/0x8f0 [ 43.884547][ T3605] ? do_raw_spin_trylock+0xb0/0x180 [ 43.889754][ T3605] ? do_raw_spin_lock+0x280/0x2a0 [ 43.894790][ T3605] __dev_queue_xmit+0x14a1/0x38f0 [ 43.899845][ T3605] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 43.905137][ T3605] ? skb_partial_csum_set+0x21b/0x2b0 [ 43.910522][ T3605] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 43.916768][ T3605] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 43.922492][ T3605] ? virtio_net_hdr_to_skb.constprop.0+0xf3/0x1150 [ 43.929004][ T3605] ? tpacket_destruct_skb+0x7c0/0x7c0 [ 43.934469][ T3605] packet_sendmsg+0x21cb/0x5550 [ 43.939336][ T3605] ? aa_sk_perm+0x30f/0xaa0 [ 43.943840][ T3605] ? _copy_from_user+0xf9/0x170 [ 43.948697][ T3605] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 43.954594][ T3605] ? aa_af_perm+0x230/0x230 [ 43.959102][ T3605] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 43.965348][ T3605] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 43.971591][ T3605] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 43.977489][ T3605] sock_sendmsg+0xcf/0x120 [ 43.981993][ T3605] ____sys_sendmsg+0x6eb/0x810 [ 43.986760][ T3605] ? kernel_sendmsg+0x50/0x50 [ 43.991529][ T3605] ? do_recvmmsg+0x6d0/0x6d0 [ 43.996125][ T3605] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.002203][ T3605] ? lockdep_hardirqs_on+0x79/0x100 [ 44.007410][ T3605] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.013491][ T3605] ___sys_sendmsg+0xf3/0x170 [ 44.018099][ T3605] ? sendmsg_copy_msghdr+0x160/0x160 [ 44.023411][ T3605] ? lock_release+0x780/0x780 [ 44.028111][ T3605] ? ptrace_stop+0x590/0xb30 [ 44.032721][ T3605] ? do_raw_spin_lock+0x120/0x2a0 [ 44.037761][ T3605] ? rwlock_bug.part.0+0x90/0x90 [ 44.042714][ T3605] ? _raw_spin_lock_irq+0x41/0x50 [ 44.047748][ T3605] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 44.053999][ T3605] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 44.060246][ T3605] ? __fget_light+0x20f/0x270 [ 44.064930][ T3605] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 44.071182][ T3605] __x64_sys_sendmsg+0x132/0x220 [ 44.076129][ T3605] ? __sys_sendmsg+0x1b0/0x1b0 [ 44.080908][ T3605] ? _raw_spin_unlock_irq+0x2a/0x40 [ 44.086109][ T3605] ? ptrace_notify+0xfa/0x140 [ 44.090809][ T3605] do_syscall_64+0x35/0xb0 [ 44.095232][ T3605] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 44.101162][ T3605] RIP: 0033:0x7fb473435679 [ 44.105579][ T3605] 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 [ 44.125190][ T3605] RSP: 002b:00007ffe19940268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 44.133604][ T3605] RAX: ffffffffffffffda RBX: 00007ffe19940290 RCX: 00007fb473435679 [ 44.141575][ T3605] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 44.149548][ T3605] RBP: 0000000000000003 R08: bb1414ac19940297 R09: bb1414ac19940297 [ 44.157518][ T3605] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 44.165488][ T3605] R13: 00007ffe19940280 R14: 00007ffe19940278 R15: 00007ffe19940274 [ 44.173464][ T3605] [ 44.176485][ T3605] Modules linked in: [ 44.180435][ T3605] ---[ end trace 0000000000000000 ]--- [ 44.180435][ T3605] ---[ end trace 0000000000000000 ]--- [ 44.180444][ T3605] RIP: 0010:skb_mac_gso_segment+0x48f/0x530 [ 44.180472][ T3605] Code: 00 48 c7 c7 00 21 d4 8a c6 05 56 3d 48 06 01 e8 50 c0 d0 01 e9 2f fd ff ff 49 c7 c4 ea ff ff ff e9 f1 fe ff ff e8 11 db 1b fa <0f> 0b 48 89 df e8 e7 20 68 fa e9 7f fd ff ff e8 fd 20 68 fa e9 48 [ 44.180490][ T3605] RSP: 0018:ffffc9000301f4b8 EFLAGS: 00010293 [ 44.180505][ T3605] RAX: 0000000000000000 RBX: 0000000000000012 RCX: 0000000000000000 [ 44.180518][ T3605] RDX: ffff888018bc5880 RSI: ffffffff875dd94f RDI: 0000000000000003 [ 44.180531][ T3605] RBP: 000000000000e4e3 R08: 0000000000000fe0 R09: 000000000000e4e3 [ 44.180544][ T3605] R10: ffffffff875dd5ec R11: 0000000000000000 R12: 0000000000000fe0 [ 44.180557][ T3605] R13: ffff88801ef083c0 R14: 1ffff92000603e9b R15: 0000000000000012 [ 44.180574][ T3605] FS: 0000555555642300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 44.180600][ T3605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.180614][ T3605] CR2: 0000000020002000 CR3: 000000001fff1000 CR4: 00000000003506f0 [ 44.180627][ T3605] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.180640][ T3605] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.180654][ T3605] Kernel panic - not syncing: Fatal exception in interrupt [ 44.186269][ T3605] Kernel Offset: disabled