./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1053997895 <...> Warning: Permanently added '10.128.0.128' (ED25519) to the list of known hosts. execve("./syz-executor1053997895", ["./syz-executor1053997895"], 0x7ffc42991e20 /* 10 vars */) = 0 brk(NULL) = 0x555567acd000 brk(0x555567acdd00) = 0x555567acdd00 arch_prctl(ARCH_SET_FS, 0x555567acd380) = 0 set_tid_address(0x555567acd650) = 5081 set_robust_list(0x555567acd660, 24) = 0 rseq(0x555567acdca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1053997895", 4096) = 28 getrandom("\xbb\x20\x9e\x7d\x9f\xd9\x84\x6b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567acdd00 brk(0x555567aeed00) = 0x555567aeed00 brk(0x555567aef000) = 0x555567aef000 mprotect(0x7f0cba4cb000, 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=0x555567acd650) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x555567acd660, 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() (10647) [ 63.282648][ T5082] WARNING: CPU: 1 PID: 5082 at net/core/dev.c:3335 skb_checksum_help+0x68f/0x730 [ 63.291863][ T5082] Modules linked in: [ 63.295829][ T5082] CPU: 1 PID: 5082 Comm: syz-executor105 Not tainted 6.9.0-rc6-syzkaller-01528-g1b3b2d9e772b #0 [ 63.306290][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 63.316385][ T5082] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 63.322138][ T5082] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 00 78 c1 8c 4c 89 f6 89 da e8 62 2c 05 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 63.341828][ T5082] RSP: 0018:ffffc900031eeae8 EFLAGS: 00010246 [ 63.347968][ T5082] RAX: da4e900e74f74b00 RBX: 0000000000002997 RCX: ffff888079028000 [ 63.355985][ T5082] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 63.363993][ T5082] RBP: dffffc0000000000 R08: ffffffff8158a8d2 R09: 1ffff110172a519a [ 63.371974][ T5082] R10: dffffc0000000000 R11: ffffed10172a519b R12: 1ffff110057b6a5e [ 63.379984][ T5082] R13: 0000000000003534 R14: 0000000000003536 R15: ffff88802bdb5280 [ 63.388004][ T5082] FS: 0000555567acd380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 63.396978][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.403599][ T5082] CR2: 000000002000d000 CR3: 0000000011056000 CR4: 00000000003506f0 [ 63.411565][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.419673][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.427782][ T5082] Call Trace: [ 63.431181][ T5082] [ 63.434197][ T5082] ? __warn+0x163/0x4e0 [ 63.438444][ T5082] ? skb_checksum_help+0x68f/0x730 [ 63.443820][ T5082] ? report_bug+0x2b3/0x500 [ 63.448399][ T5082] ? skb_checksum_help+0x68f/0x730 [ 63.453669][ T5082] ? handle_bug+0x3e/0x70 [ 63.458180][ T5082] ? exc_invalid_op+0x1a/0x50 [ 63.462940][ T5082] ? asm_exc_invalid_op+0x1a/0x20 [ 63.468041][ T5082] ? __warn_printk+0x292/0x360 [ 63.472882][ T5082] ? skb_checksum_help+0x68f/0x730 [ 63.478029][ T5082] ? skb_checksum_help+0x68e/0x730 [ 63.483210][ T5082] validate_xmit_skb+0xc1f/0x1120 [ 63.488257][ T5082] ? rcu_read_lock_bh_held+0x7e/0x120 [ 63.493680][ T5082] ? __pfx_validate_xmit_skb+0x10/0x10 [ 63.499202][ T5082] ? lockdep_hardirqs_on+0x99/0x150 [ 63.504462][ T5082] __dev_queue_xmit+0x175c/0x3d30 [ 63.509524][ T5082] ? __dev_queue_xmit+0x2d2/0x3d30 [ 63.514689][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 63.520082][ T5082] ? __pfx_lock_acquire+0x10/0x10 [ 63.525167][ T5082] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 63.531165][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 63.537569][ T5082] ? ip_finish_output2+0xa14/0x1380 [ 63.542840][ T5082] ? ip_finish_output2+0x45f/0x1380 [ 63.548054][ T5082] ip_finish_output2+0xd41/0x1380 [ 63.553140][ T5082] ? ip_finish_output2+0x45f/0x1380 [ 63.558359][ T5082] ? __pfx_ip_finish_output2+0x10/0x10 [ 63.563879][ T5082] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 63.568747][ T5082] ? __ip_finish_output+0x347/0x400 [ 63.574001][ T5082] iptunnel_xmit+0x540/0x9b0 [ 63.578615][ T5082] ip_tunnel_xmit+0x2113/0x2940 [ 63.583550][ T5082] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 63.588769][ T5082] ? gre_build_header+0x341/0xb30 [ 63.593869][ T5082] ? __pfx_gre_build_header+0x10/0x10 [ 63.599319][ T5082] ? iptunnel_handle_offloads+0x2b2/0x650 [ 63.605192][ T5082] ipgre_xmit+0x956/0xd40 [ 63.609563][ T5082] ? __pfx_ipgre_xmit+0x10/0x10 [ 63.614467][ T5082] ? validate_xmit_skb+0xa04/0x1120 [ 63.619687][ T5082] dev_hard_start_xmit+0x27a/0x7e0 [ 63.624885][ T5082] __dev_queue_xmit+0x1b0e/0x3d30 [ 63.629945][ T5082] ? __might_fault+0xc6/0x120 [ 63.634705][ T5082] ? __dev_queue_xmit+0x2d2/0x3d30 [ 63.639864][ T5082] ? skb_partial_csum_set+0x105/0x350 [ 63.645326][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 63.650729][ T5082] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 63.656332][ T5082] ? packet_parse_headers+0x7bd/0xad0 [ 63.661737][ T5082] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 63.667590][ T5082] ? packet_xmit+0x68/0x330 [ 63.672106][ T5082] packet_sendmsg+0x46a9/0x6130 [ 63.677037][ T5082] ? __pfx___might_resched+0x10/0x10 [ 63.682442][ T5082] ? aa_sk_perm+0x967/0xab0 [ 63.687000][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 63.692236][ T5082] ? __import_iovec+0x361/0x820 [ 63.697136][ T5082] ? aa_sock_msg_perm+0x91/0x160 [ 63.702090][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 63.707513][ T5082] ? security_socket_sendmsg+0x87/0xb0 [ 63.713036][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 63.718291][ T5082] __sock_sendmsg+0x221/0x270 [ 63.723041][ T5082] ____sys_sendmsg+0x525/0x7d0 [ 63.727835][ T5082] ? __pfx_____sys_sendmsg+0x10/0x10 [ 63.733196][ T5082] ? do_raw_spin_lock+0x14f/0x370 [ 63.738248][ T5082] __sys_sendmsg+0x2b0/0x3a0 [ 63.742891][ T5082] ? __pfx___sys_sendmsg+0x10/0x10 [ 63.748042][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 63.754531][ T5082] ? _raw_spin_unlock_irq+0x2e/0x50 [ 63.759855][ T5082] ? ptrace_notify+0x279/0x380 [ 63.764804][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 63.771164][ T5082] ? exc_page_fault+0x585/0x8e0 [ 63.776160][ T5082] do_syscall_64+0xf5/0x240 [ 63.780720][ T5082] ? clear_bhb_loop+0x35/0x90 [ 63.785461][ T5082] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 63.791473][ T5082] RIP: 0033:0x7f0cba4534d9 [ 63.795956][ 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 [ 63.815785][ T5082] RSP: 002b:00007fff38847e68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.824263][ T5082] RAX: ffffffffffffffda RBX: 00007f0cba4a0390 RCX: 00007f0cba4534d9 [ 63.832349][ T5082] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 63.840509][ T5082] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 63.848553][ T5082] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff38847eb0 [ 63.856598][ T5082] R13: 00007fff38847e80 R14: 0000000000000001 R15: 00007fff38847eb0 [ 63.864681][ T5082] [ 63.867740][ T5082] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 63.875031][ T5082] CPU: 1 PID: 5082 Comm: syz-executor105 Not tainted 6.9.0-rc6-syzkaller-01528-g1b3b2d9e772b #0 [ 63.885438][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 63.895493][ T5082] Call Trace: [ 63.898765][ T5082] [ 63.901687][ T5082] dump_stack_lvl+0x241/0x360 [ 63.906380][ T5082] ? __pfx_dump_stack_lvl+0x10/0x10 [ 63.911588][ T5082] ? __pfx__printk+0x10/0x10 [ 63.916212][ T5082] ? vscnprintf+0x5d/0x90 [ 63.920583][ T5082] panic+0x349/0x860 [ 63.924487][ T5082] ? __warn+0x172/0x4e0 [ 63.929186][ T5082] ? __pfx_panic+0x10/0x10 [ 63.933647][ T5082] __warn+0x346/0x4e0 [ 63.937661][ T5082] ? skb_checksum_help+0x68f/0x730 [ 63.942975][ T5082] report_bug+0x2b3/0x500 [ 63.947396][ T5082] ? skb_checksum_help+0x68f/0x730 [ 63.952508][ T5082] handle_bug+0x3e/0x70 [ 63.956668][ T5082] exc_invalid_op+0x1a/0x50 [ 63.961171][ T5082] asm_exc_invalid_op+0x1a/0x20 [ 63.966044][ T5082] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 63.971843][ T5082] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 00 78 c1 8c 4c 89 f6 89 da e8 62 2c 05 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 63.991498][ T5082] RSP: 0018:ffffc900031eeae8 EFLAGS: 00010246 [ 63.997592][ T5082] RAX: da4e900e74f74b00 RBX: 0000000000002997 RCX: ffff888079028000 [ 64.005662][ T5082] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 64.013647][ T5082] RBP: dffffc0000000000 R08: ffffffff8158a8d2 R09: 1ffff110172a519a [ 64.021627][ T5082] R10: dffffc0000000000 R11: ffffed10172a519b R12: 1ffff110057b6a5e [ 64.029691][ T5082] R13: 0000000000003534 R14: 0000000000003536 R15: ffff88802bdb5280 [ 64.037769][ T5082] ? __warn_printk+0x292/0x360 [ 64.042546][ T5082] ? skb_checksum_help+0x68e/0x730 [ 64.047674][ T5082] validate_xmit_skb+0xc1f/0x1120 [ 64.052706][ T5082] ? rcu_read_lock_bh_held+0x7e/0x120 [ 64.058097][ T5082] ? __pfx_validate_xmit_skb+0x10/0x10 [ 64.063554][ T5082] ? lockdep_hardirqs_on+0x99/0x150 [ 64.068757][ T5082] __dev_queue_xmit+0x175c/0x3d30 [ 64.073817][ T5082] ? __dev_queue_xmit+0x2d2/0x3d30 [ 64.078946][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 64.084364][ T5082] ? __pfx_lock_acquire+0x10/0x10 [ 64.089459][ T5082] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 64.095453][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.101816][ T5082] ? ip_finish_output2+0xa14/0x1380 [ 64.107075][ T5082] ? ip_finish_output2+0x45f/0x1380 [ 64.112295][ T5082] ip_finish_output2+0xd41/0x1380 [ 64.117338][ T5082] ? ip_finish_output2+0x45f/0x1380 [ 64.122540][ T5082] ? __pfx_ip_finish_output2+0x10/0x10 [ 64.128076][ T5082] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 64.132972][ T5082] ? __ip_finish_output+0x347/0x400 [ 64.138202][ T5082] iptunnel_xmit+0x540/0x9b0 [ 64.142821][ T5082] ip_tunnel_xmit+0x2113/0x2940 [ 64.147676][ T5082] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 64.152890][ T5082] ? gre_build_header+0x341/0xb30 [ 64.157956][ T5082] ? __pfx_gre_build_header+0x10/0x10 [ 64.163332][ T5082] ? iptunnel_handle_offloads+0x2b2/0x650 [ 64.169069][ T5082] ipgre_xmit+0x956/0xd40 [ 64.173437][ T5082] ? __pfx_ipgre_xmit+0x10/0x10 [ 64.178397][ T5082] ? validate_xmit_skb+0xa04/0x1120 [ 64.183613][ T5082] dev_hard_start_xmit+0x27a/0x7e0 [ 64.188759][ T5082] __dev_queue_xmit+0x1b0e/0x3d30 [ 64.194586][ T5082] ? __might_fault+0xc6/0x120 [ 64.199391][ T5082] ? __dev_queue_xmit+0x2d2/0x3d30 [ 64.204710][ T5082] ? skb_partial_csum_set+0x105/0x350 [ 64.210114][ T5082] ? __pfx___dev_queue_xmit+0x10/0x10 [ 64.215524][ T5082] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 64.221158][ T5082] ? packet_parse_headers+0x7bd/0xad0 [ 64.226578][ T5082] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 64.232386][ T5082] ? packet_xmit+0x68/0x330 [ 64.237174][ T5082] packet_sendmsg+0x46a9/0x6130 [ 64.242043][ T5082] ? __pfx___might_resched+0x10/0x10 [ 64.247444][ T5082] ? aa_sk_perm+0x967/0xab0 [ 64.252549][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 64.257839][ T5082] ? __import_iovec+0x361/0x820 [ 64.262811][ T5082] ? aa_sock_msg_perm+0x91/0x160 [ 64.267756][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 64.273115][ T5082] ? security_socket_sendmsg+0x87/0xb0 [ 64.278612][ T5082] ? __pfx_packet_sendmsg+0x10/0x10 [ 64.283816][ T5082] __sock_sendmsg+0x221/0x270 [ 64.288518][ T5082] ____sys_sendmsg+0x525/0x7d0 [ 64.293415][ T5082] ? __pfx_____sys_sendmsg+0x10/0x10 [ 64.299292][ T5082] ? do_raw_spin_lock+0x14f/0x370 [ 64.304425][ T5082] __sys_sendmsg+0x2b0/0x3a0 [ 64.309120][ T5082] ? __pfx___sys_sendmsg+0x10/0x10 [ 64.314280][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.320666][ T5082] ? _raw_spin_unlock_irq+0x2e/0x50 [ 64.325890][ T5082] ? ptrace_notify+0x279/0x380 [ 64.330867][ T5082] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.337488][ T5082] ? exc_page_fault+0x585/0x8e0 [ 64.342342][ T5082] do_syscall_64+0xf5/0x240 [ 64.346932][ T5082] ? clear_bhb_loop+0x35/0x90 [ 64.351689][ T5082] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.357662][ T5082] RIP: 0033:0x7f0cba4534d9 [ 64.362181][ 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 [ 64.382260][ T5082] RSP: 002b:00007fff38847e68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.391018][ T5082] RAX: ffffffffffffffda RBX: 00007f0cba4a0390 RCX: 00007f0cba4534d9 [ 64.399198][ T5082] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 64.407241][ T5082] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 64.415334][ T5082] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff38847eb0 [ 64.423325][ T5082] R13: 00007fff38847e80 R14: 0000000000000001 R15: 00007fff38847eb0 [ 64.431566][ T5082] [ 64.435188][ T5082] Kernel Offset: disabled [ 64.439640][ T5082] Rebooting in 86400 seconds..