./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1973163661 <...> Warning: Permanently added '10.128.1.139' (ED25519) to the list of known hosts. execve("./syz-executor1973163661", ["./syz-executor1973163661"], 0x7ffc7aa2c300 /* 10 vars */) = 0 brk(NULL) = 0x5555723eb000 brk(0x5555723ebd00) = 0x5555723ebd00 arch_prctl(ARCH_SET_FS, 0x5555723eb380) = 0 set_tid_address(0x5555723eb650) = 5081 set_robust_list(0x5555723eb660, 24) = 0 rseq(0x5555723ebca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1973163661", 4096) = 28 getrandom("\x91\x40\xd7\x6a\xa2\x37\x45\xff", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555723ebd00 brk(0x55557240cd00) = 0x55557240cd00 brk(0x55557240d000) = 0x55557240d000 mprotect(0x7fc5cffc0000, 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=0x5555723eb650) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x5555723eb660, 24) = 0 [pid 5082] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setsid() = 1 [pid 5082] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5082] unshare(CLONE_NEWNS) = 0 [pid 5082] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5082] unshare(CLONE_NEWIPC) = 0 [pid 5082] unshare(CLONE_NEWCGROUP) = 0 [pid 5082] unshare(CLONE_NEWUTS) = 0 [pid 5082] unshare(CLONE_SYSVSEM) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "16777216", 8) = 8 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "536870912", 9) = 9 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "8192", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5082] close(3) = 0 [pid 5082] getpid() = 1 [pid 5082] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (104) [ 70.630541][ T5082] WARNING: CPU: 1 PID: 5082 at net/core/dev.c:3278 skb_checksum_help+0x5f9/0x730 [ 70.639749][ T5082] Modules linked in: [ 70.643779][ T5082] CPU: 1 PID: 5082 Comm: syz-executor197 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 70.654266][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 70.664394][ T5082] RIP: 0010:skb_checksum_help+0x5f9/0x730 [ 70.670154][ T5082] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 dd 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 40 83 c0 8c 44 89 f6 89 da e8 78 e5 0e f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 65 fd ff ff e8 34 73 4c f8 c6 05 db [ 70.689947][ T5082] RSP: 0018:ffffc9000355ee48 EFLAGS: 00010246 [ 70.696076][ T5082] RAX: 4b05a7a9c2c92600 RBX: 0000000000000068 RCX: ffff88802c5f0000 [ 70.704094][ T5082] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 70.712080][ T5082] RBP: 0000000000002969 R08: ffffffff81587c52 R09: 1ffff110172a519a [ 70.720109][ T5082] R10: dffffc0000000000 R11: ffffed10172a519b R12: 1ffff110055fe79e [ 70.728129][ T5082] R13: dffffc0000000000 R14: 0000000000000529 R15: ffff88802aff3c80 [ 70.736321][ T5082] FS: 00005555723eb380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 70.745346][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.751979][ T5082] CR2: 000000002000d000 CR3: 0000000078680000 CR4: 00000000003506f0 [ 70.760107][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.768218][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.776727][ T5082] Call Trace: [ 70.780059][ T5082] [ 70.783057][ T5082] ? __warn+0x163/0x4e0 [ 70.787239][ T5082] ? skb_checksum_help+0x5f9/0x730 [ 70.792352][ T5082] ? report_bug+0x2b3/0x500 [ 70.797022][ T5082] ? skb_checksum_help+0x5f9/0x730 [ 70.802185][ T5082] ? handle_bug+0x3e/0x70 [ 70.806585][ T5082] ? exc_invalid_op+0x1a/0x50 [ 70.811297][ T5082] ? asm_exc_invalid_op+0x1a/0x20 [ 70.816379][ T5082] ? __warn_printk+0x292/0x360 [ 70.821172][ T5082] ? skb_checksum_help+0x5f9/0x730 [ 70.826356][ T5082] ? skb_checksum_help+0x5f8/0x730 [ 70.831521][ T5082] ip_do_fragment+0x21b/0x1b60 [ 70.836390][ T5082] ? __pfx_ip_finish_output2+0x10/0x10 [ 70.841876][ T5082] ? __pfx_ip_do_fragment+0x10/0x10 [ 70.847134][ T5082] ? kasan_quarantine_put+0xdc/0x230 [ 70.852439][ T5082] ? lockdep_hardirqs_on+0x99/0x150 [ 70.857774][ T5082] ? __ip_finish_output+0x247/0x400 [ 70.863050][ T5082] ? kmem_cache_free+0x10b/0x2d0 [ 70.868023][ T5082] ? ip_fragment+0x9a/0x220 [ 70.872558][ T5082] __ip_finish_output+0x290/0x400 [ 70.877758][ T5082] iptunnel_xmit+0x540/0x9b0 [ 70.882386][ T5082] ip_tunnel_xmit+0x20ef/0x2940 [ 70.887318][ T5082] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 70.892536][ T5082] ? skb_mac_gso_segment+0x1b8/0x740 [ 70.897948][ T5082] ? skb_mac_gso_segment+0x50c/0x740 [ 70.903431][ T5082] ? gre_build_header+0x25b/0x990 [ 70.908489][ T5082] ipgre_xmit+0x854/0xc30 [ 70.912827][ T5082] dev_hard_start_xmit+0x27a/0x7e0 [ 70.918219][ T5082] __dev_queue_xmit+0x1ad1/0x3ca0 [ 70.923304][ T5082] ? __dev_queue_xmit+0x2c7/0x3ca0 [ 70.928420][ T5082] ? skb_partial_csum_set+0x105/0x350 [ 70.933847][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 70.939244][ T5082] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 70.944842][ T5082] ? packet_parse_headers+0x7bd/0xad0 [ 70.950244][ T5082] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 70.956104][ T5082] ? packet_xmit+0x68/0x330 [ 70.960633][ T5082] packet_sendmsg+0x46a9/0x6130 [ 70.965585][ T5082] ? mark_lock+0x9a/0x350 [ 70.969946][ T5082] ? smack_socket_sendmsg+0x172/0x540 [ 70.975394][ T5082] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 70.981241][ T5082] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 70.987743][ T5082] ? __pfx_tomoyo_socket_sendmsg_permission+0x10/0x10 [ 70.994581][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 70.999840][ T5082] ? __pfx_lock_release+0x10/0x10 [ 71.004914][ T5082] ? __import_iovec+0x536/0x820 [ 71.009892][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 71.015232][ T5082] ? security_socket_sendmsg+0x87/0xb0 [ 71.020714][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 71.025990][ T5082] __sock_sendmsg+0x221/0x270 [ 71.030733][ T5082] ____sys_sendmsg+0x525/0x7d0 [ 71.035583][ T5082] ? __pfx_____sys_sendmsg+0x10/0x10 [ 71.040892][ T5082] ? do_raw_spin_lock+0x14f/0x370 [ 71.045991][ T5082] __sys_sendmsg+0x2b0/0x3a0 [ 71.050609][ T5082] ? __pfx___sys_sendmsg+0x10/0x10 [ 71.055790][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 71.062149][ T5082] ? _raw_spin_unlock_irq+0x2e/0x50 [ 71.067438][ T5082] ? ptrace_notify+0x279/0x380 [ 71.072595][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 71.078980][ T5082] ? exc_page_fault+0x577/0x8a0 [ 71.083897][ T5082] do_syscall_64+0xf5/0x240 [ 71.088439][ T5082] ? clear_bhb_loop+0x35/0x90 [ 71.093358][ T5082] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 71.099316][ T5082] RIP: 0033:0x7fc5cff484d9 [ 71.103803][ T5082] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 71.123480][ T5082] RSP: 002b:00007ffe3eb8f778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.131939][ T5082] RAX: ffffffffffffffda RBX: 00007fc5cff95390 RCX: 00007fc5cff484d9 [ 71.140002][ T5082] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 71.148041][ T5082] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 71.156060][ T5082] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe3eb8f7c0 [ 71.164092][ T5082] R13: 00007ffe3eb8f790 R14: 0000000000000001 R15: 00007ffe3eb8f7c0 [ 71.172089][ T5082] [ 71.175153][ T5082] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 71.182440][ T5082] CPU: 1 PID: 5082 Comm: syz-executor197 Not tainted 6.9.0-rc7-syzkaller-00023-g6d7ddd805123 #0 [ 71.192862][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 71.202944][ T5082] Call Trace: [ 71.206261][ T5082] [ 71.209190][ T5082] dump_stack_lvl+0x241/0x360 [ 71.213873][ T5082] ? __pfx_dump_stack_lvl+0x10/0x10 [ 71.219064][ T5082] ? __pfx__printk+0x10/0x10 [ 71.223663][ T5082] ? vscnprintf+0x5d/0x90 [ 71.228016][ T5082] panic+0x349/0x860 [ 71.231915][ T5082] ? __warn+0x172/0x4e0 [ 71.236070][ T5082] ? __pfx_panic+0x10/0x10 [ 71.240502][ T5082] __warn+0x346/0x4e0 [ 71.244499][ T5082] ? skb_checksum_help+0x5f9/0x730 [ 71.249703][ T5082] report_bug+0x2b3/0x500 [ 71.254036][ T5082] ? skb_checksum_help+0x5f9/0x730 [ 71.259155][ T5082] handle_bug+0x3e/0x70 [ 71.263316][ T5082] exc_invalid_op+0x1a/0x50 [ 71.267823][ T5082] asm_exc_invalid_op+0x1a/0x20 [ 71.272768][ T5082] RIP: 0010:skb_checksum_help+0x5f9/0x730 [ 71.278495][ T5082] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 dd 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 40 83 c0 8c 44 89 f6 89 da e8 78 e5 0e f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 65 fd ff ff e8 34 73 4c f8 c6 05 db [ 71.298120][ T5082] RSP: 0018:ffffc9000355ee48 EFLAGS: 00010246 [ 71.304299][ T5082] RAX: 4b05a7a9c2c92600 RBX: 0000000000000068 RCX: ffff88802c5f0000 [ 71.312273][ T5082] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.320242][ T5082] RBP: 0000000000002969 R08: ffffffff81587c52 R09: 1ffff110172a519a [ 71.328214][ T5082] R10: dffffc0000000000 R11: ffffed10172a519b R12: 1ffff110055fe79e [ 71.336186][ T5082] R13: dffffc0000000000 R14: 0000000000000529 R15: ffff88802aff3c80 [ 71.344167][ T5082] ? __warn_printk+0x292/0x360 [ 71.348953][ T5082] ? skb_checksum_help+0x5f8/0x730 [ 71.354094][ T5082] ip_do_fragment+0x21b/0x1b60 [ 71.358910][ T5082] ? __pfx_ip_finish_output2+0x10/0x10 [ 71.364400][ T5082] ? __pfx_ip_do_fragment+0x10/0x10 [ 71.369746][ T5082] ? kasan_quarantine_put+0xdc/0x230 [ 71.375069][ T5082] ? lockdep_hardirqs_on+0x99/0x150 [ 71.380325][ T5082] ? __ip_finish_output+0x247/0x400 [ 71.385552][ T5082] ? kmem_cache_free+0x10b/0x2d0 [ 71.390604][ T5082] ? ip_fragment+0x9a/0x220 [ 71.395200][ T5082] __ip_finish_output+0x290/0x400 [ 71.400358][ T5082] iptunnel_xmit+0x540/0x9b0 [ 71.405015][ T5082] ip_tunnel_xmit+0x20ef/0x2940 [ 71.409900][ T5082] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 71.415104][ T5082] ? skb_mac_gso_segment+0x1b8/0x740 [ 71.420440][ T5082] ? skb_mac_gso_segment+0x50c/0x740 [ 71.425778][ T5082] ? gre_build_header+0x25b/0x990 [ 71.430825][ T5082] ipgre_xmit+0x854/0xc30 [ 71.435267][ T5082] dev_hard_start_xmit+0x27a/0x7e0 [ 71.440407][ T5082] __dev_queue_xmit+0x1ad1/0x3ca0 [ 71.445620][ T5082] ? __dev_queue_xmit+0x2c7/0x3ca0 [ 71.450749][ T5082] ? skb_partial_csum_set+0x105/0x350 [ 71.456126][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 71.461500][ T5082] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 71.467049][ T5082] ? packet_parse_headers+0x7bd/0xad0 [ 71.472467][ T5082] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 71.478309][ T5082] ? packet_xmit+0x68/0x330 [ 71.482833][ T5082] packet_sendmsg+0x46a9/0x6130 [ 71.487694][ T5082] ? mark_lock+0x9a/0x350 [ 71.492042][ T5082] ? smack_socket_sendmsg+0x172/0x540 [ 71.497450][ T5082] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 71.503178][ T5082] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 71.509627][ T5082] ? __pfx_tomoyo_socket_sendmsg_permission+0x10/0x10 [ 71.516429][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 71.521649][ T5082] ? __pfx_lock_release+0x10/0x10 [ 71.526676][ T5082] ? __import_iovec+0x536/0x820 [ 71.531533][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 71.536821][ T5082] ? security_socket_sendmsg+0x87/0xb0 [ 71.542284][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 71.547708][ T5082] __sock_sendmsg+0x221/0x270 [ 71.552590][ T5082] ____sys_sendmsg+0x525/0x7d0 [ 71.557453][ T5082] ? __pfx_____sys_sendmsg+0x10/0x10 [ 71.562743][ T5082] ? do_raw_spin_lock+0x14f/0x370 [ 71.567779][ T5082] __sys_sendmsg+0x2b0/0x3a0 [ 71.572371][ T5082] ? __pfx___sys_sendmsg+0x10/0x10 [ 71.577492][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 71.583832][ T5082] ? _raw_spin_unlock_irq+0x2e/0x50 [ 71.589035][ T5082] ? ptrace_notify+0x279/0x380 [ 71.593807][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 71.600142][ T5082] ? exc_page_fault+0x577/0x8a0 [ 71.605009][ T5082] do_syscall_64+0xf5/0x240 [ 71.609517][ T5082] ? clear_bhb_loop+0x35/0x90 [ 71.614196][ T5082] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 71.620096][ T5082] RIP: 0033:0x7fc5cff484d9 [ 71.624518][ T5082] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 71.644127][ T5082] RSP: 002b:00007ffe3eb8f778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.652546][ T5082] RAX: ffffffffffffffda RBX: 00007fc5cff95390 RCX: 00007fc5cff484d9 [ 71.660517][ T5082] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 71.668491][ T5082] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 71.676465][ T5082] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe3eb8f7c0 [ 71.684441][ T5082] R13: 00007ffe3eb8f790 R14: 0000000000000001 R15: 00007ffe3eb8f7c0 [ 71.692426][ T5082] [ 71.695780][ T5082] Kernel Offset: disabled [ 71.700131][ T5082] Rebooting in 86400 seconds..