./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3808033611 <...> no interfaces have a carrier forked to background, child pid 3182 [ 25.993322][ T3183] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.996053][ T3183] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.30' (ECDSA) to the list of known hosts. execve("./syz-executor3808033611", ["./syz-executor3808033611"], 0x7ffec63fe2f0 /* 10 vars */) = 0 brk(NULL) = 0x5555570fb000 brk(0x5555570fbc40) = 0x5555570fbc40 arch_prctl(ARCH_SET_FS, 0x5555570fb300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3808033611", 4096) = 28 brk(0x55555711cc40) = 0x55555711cc40 brk(0x55555711d000) = 0x55555711d000 mprotect(0x7fbd2641a000, 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 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3604 attached , child_tidptr=0x5555570fb5d0) = 3604 [pid 3604] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3604] setsid() = 1 [pid 3604] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3604] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3604] unshare(CLONE_NEWNS) = 0 [pid 3604] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3604] unshare(CLONE_NEWIPC) = 0 [pid 3604] unshare(CLONE_NEWCGROUP) = 0 [pid 3604] unshare(CLONE_NEWUTS) = 0 [pid 3604] unshare(CLONE_SYSVSEM) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "16777216", 8) = 8 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "536870912", 9) = 9 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "8192", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024", 4) = 4 [pid 3604] close(3) = 0 [pid 3604] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3604] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3604] close(3) = 0 [pid 3604] getpid() = 1 [pid 3604] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 45 31 f6 e9 8d fe ff ff 65 ff 05 81 d4 45 7e 48 c7 c0 80 8e [ 51.189625][ T3604] RSP: 0018:ffffc9000303f8e0 EFLAGS: 00010246 [ 51.195763][ T3604] RAX: 0000000000000000 RBX: 1ffff92000607f1d RCX: 0000000000000000 [ 51.204061][ T3604] RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000000 [ 51.212272][ T3604] RBP: 0000000000060a20 R08: 0000000000000001 R09: 0000000000000000 [ 51.220321][ T3604] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000012 [ 51.228511][ T3604] R13: 0000000000000000 R14: 0000000000000012 R15: 0000000000000000 [ 51.236508][ T3604] FS: 00005555570fb300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 51.245573][ T3604] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.252276][ T3604] CR2: 00007fd16dd7e300 CR3: 000000007259e000 CR4: 00000000003506e0 [ 51.260402][ T3604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.268516][ T3604] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.276591][ T3604] Call Trace: [ 51.279963][ T3604] [ 51.283036][ T3604] ? __alloc_pages_slowpath.constprop.0+0x2160/0x2160 [ 51.289971][ T3604] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.295542][ T3604] ? trace_contention_end+0xea/0x150 [ 51.300950][ T3604] kmalloc_large_node+0x62/0x130 [ 51.305917][ T3604] __kmalloc_node_track_caller+0x2ec/0x360 [ 51.311898][ T3604] ? tun_get_user+0x1ef8/0x3b00 [ 51.316797][ T3604] ? __build_skb_around+0x274/0x340 [ 51.322098][ T3604] pskb_expand_head+0xf23/0x1070 [ 51.327069][ T3604] ? __local_bh_enable_ip+0xa0/0x120 [ 51.332485][ T3604] tun_get_user+0x1ef8/0x3b00 [ 51.337222][ T3604] ? tun_build_skb+0x1170/0x1170 [ 51.342541][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 51.347469][ T3604] tun_chr_write_iter+0xdb/0x200 [ 51.352504][ T3604] new_sync_write+0x38a/0x560 [ 51.357216][ T3604] ? new_sync_read+0x5f0/0x5f0 [ 51.362122][ T3604] ? _raw_spin_lock_irq+0x41/0x50 [ 51.367179][ T3604] ? bpf_lsm_file_permission+0x5/0x10 [ 51.372638][ T3604] ? security_file_permission+0xab/0xd0 [ 51.378214][ T3604] vfs_write+0x7c0/0xac0 [ 51.382563][ T3604] ksys_write+0x127/0x250 [ 51.386941][ T3604] ? __ia32_sys_read+0xb0/0xb0 [ 51.391808][ T3604] ? lockdep_hardirqs_on+0x79/0x100 [ 51.397039][ T3604] ? _raw_spin_unlock_irq+0x2a/0x40 [ 51.402345][ T3604] ? ptrace_notify+0xfa/0x140 [ 51.407046][ T3604] do_syscall_64+0x35/0xb0 [ 51.411541][ T3604] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 51.417555][ T3604] RIP: 0033:0x7fbd263a64e9 [ 51.422090][ T3604] 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 [ 51.441827][ T3604] RSP: 002b:00007ffcfd6b5218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 51.450356][ T3604] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fbd263a64e9 [ 51.459660][ T3604] RDX: 000000002000032a RSI: 0000000020000300 RDI: 0000000000000003 [ 51.467746][ T3604] RBP: 00007ffcfd6b5230 R08: 0000000000000001 R09: 0000000000000000 [ 51.475924][ T3604] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 51.484016][ T3604] R13: 00007ffcfd6b5250 R14: 0000000000000003 R15: 0000000000000000 [ 51.492214][ T3604] [ 51.495253][ T3604] Kernel panic - not syncing: panic_on_warn set ... [ 51.501838][ T3604] CPU: 1 PID: 3604 Comm: syz-executor380 Not tainted 5.18.0-syzkaller-10188-g58f9d52ff689 #0 [ 51.511992][ T3604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.522219][ T3604] Call Trace: [ 51.525577][ T3604] [ 51.528518][ T3604] dump_stack_lvl+0xcd/0x134 [ 51.533108][ T3604] panic+0x2d7/0x636 [ 51.537016][ T3604] ? panic_print_sys_info.part.0+0x10b/0x10b [ 51.543014][ T3604] ? __warn.cold+0x1d9/0x2cd [ 51.547600][ T3604] ? __alloc_pages+0x39e/0x510 [ 51.552368][ T3604] __warn.cold+0x1ea/0x2cd [ 51.556783][ T3604] ? __alloc_pages+0x39e/0x510 [ 51.561542][ T3604] report_bug+0x1bc/0x210 [ 51.565873][ T3604] handle_bug+0x3c/0x60 [ 51.570210][ T3604] exc_invalid_op+0x14/0x40 [ 51.574707][ T3604] asm_exc_invalid_op+0x1b/0x20 [ 51.579557][ T3604] RIP: 0010:__alloc_pages+0x39e/0x510 [ 51.584922][ T3604] Code: ff ff 00 0f 84 33 fe ff ff 80 ce 01 e9 2b fe ff ff 83 fe 0a 0f 86 3e fd ff ff 80 3d 01 68 ea 0b 00 75 09 c6 05 f8 67 ea 0b 01 <0f> 0b 45 31 f6 e9 8d fe ff ff 65 ff 05 81 d4 45 7e 48 c7 c0 80 8e [ 51.604633][ T3604] RSP: 0018:ffffc9000303f8e0 EFLAGS: 00010246 [ 51.610848][ T3604] RAX: 0000000000000000 RBX: 1ffff92000607f1d RCX: 0000000000000000 [ 51.619044][ T3604] RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000000 [ 51.627110][ T3604] RBP: 0000000000060a20 R08: 0000000000000001 R09: 0000000000000000 [ 51.635102][ T3604] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000012 [ 51.643100][ T3604] R13: 0000000000000000 R14: 0000000000000012 R15: 0000000000000000 [ 51.651093][ T3604] ? __alloc_pages_slowpath.constprop.0+0x2160/0x2160 [ 51.657999][ T3604] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.663560][ T3604] ? trace_contention_end+0xea/0x150 [ 51.668871][ T3604] kmalloc_large_node+0x62/0x130 [ 51.673822][ T3604] __kmalloc_node_track_caller+0x2ec/0x360 [ 51.679638][ T3604] ? tun_get_user+0x1ef8/0x3b00 [ 51.684502][ T3604] ? __build_skb_around+0x274/0x340 [ 51.689714][ T3604] pskb_expand_head+0xf23/0x1070 [ 51.694659][ T3604] ? __local_bh_enable_ip+0xa0/0x120 [ 51.699964][ T3604] tun_get_user+0x1ef8/0x3b00 [ 51.704670][ T3604] ? tun_build_skb+0x1170/0x1170 [ 51.709623][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 51.714675][ T3604] tun_chr_write_iter+0xdb/0x200 [ 51.719628][ T3604] new_sync_write+0x38a/0x560 [ 51.724321][ T3604] ? new_sync_read+0x5f0/0x5f0 [ 51.729098][ T3604] ? _raw_spin_lock_irq+0x41/0x50 [ 51.734146][ T3604] ? bpf_lsm_file_permission+0x5/0x10 [ 51.739545][ T3604] ? security_file_permission+0xab/0xd0 [ 51.745368][ T3604] vfs_write+0x7c0/0xac0 [ 51.749658][ T3604] ksys_write+0x127/0x250 [ 51.754000][ T3604] ? __ia32_sys_read+0xb0/0xb0 [ 51.758786][ T3604] ? lockdep_hardirqs_on+0x79/0x100 [ 51.763993][ T3604] ? _raw_spin_unlock_irq+0x2a/0x40 [ 51.769392][ T3604] ? ptrace_notify+0xfa/0x140 [ 51.774088][ T3604] do_syscall_64+0x35/0xb0 [ 51.778522][ T3604] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 51.784433][ T3604] RIP: 0033:0x7fbd263a64e9 [ 51.788859][ T3604] 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 [ 51.808627][ T3604] RSP: 002b:00007ffcfd6b5218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 51.817052][ T3604] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fbd263a64e9 [ 51.825042][ T3604] RDX: 000000002000032a RSI: 0000000020000300 RDI: 0000000000000003 [ 51.833015][ T3604] RBP: 00007ffcfd6b5230 R08: 0000000000000001 R09: 0000000000000000 [ 51.840989][ T3604] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 51.849065][ T3604] R13: 00007ffcfd6b5250 R14: 0000000000000003 R15: 0000000000000000 [ 51.857056][ T3604] [ 51.860361][ T3604] Kernel Offset: disabled [ 51.864722][ T3604] Rebooting in 86400 seconds..