./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor826350212 <...> Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts. execve("./syz-executor826350212", ["./syz-executor826350212"], 0x7ffe725fb560 /* 10 vars */) = 0 brk(NULL) = 0x5555566c1000 brk(0x5555566c1d00) = 0x5555566c1d00 arch_prctl(ARCH_SET_FS, 0x5555566c1380) = 0 set_tid_address(0x5555566c1650) = 5051 set_robust_list(0x5555566c1660, 24) = 0 rseq(0x5555566c1ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor826350212", 4096) = 27 getrandom("\xe7\xc6\x70\x24\x84\x9b\xa3\x1a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555566c1d00 brk(0x5555566e2d00) = 0x5555566e2d00 brk(0x5555566e3000) = 0x5555566e3000 mprotect(0x7eff585c0000, 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=0x5555566c1650) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x5555566c1660, 24) = 0 [pid 5052] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setsid() = 1 [pid 5052] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5052] unshare(CLONE_NEWNS) = 0 [pid 5052] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5052] unshare(CLONE_NEWIPC) = 0 [pid 5052] unshare(CLONE_NEWCGROUP) = 0 [pid 5052] unshare(CLONE_NEWUTS) = 0 [pid 5052] unshare(CLONE_SYSVSEM) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "16777216", 8) = 8 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "536870912", 9) = 9 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "8192", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5052] close(3) = 0 [pid 5052] getpid() = 1 [pid 5052] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (104) [ 88.975188][ T5062] WARNING: CPU: 0 PID: 5062 at net/core/dev.c:3297 skb_checksum_help+0x525/0x730 [ 88.984642][ T5062] Modules linked in: [ 88.988553][ T5062] CPU: 0 PID: 5062 Comm: syz-executor826 Not tainted 6.6.0-rc5-syzkaller-01269-gc49bba011b51 #0 [ 88.999883][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 89.010110][ T5062] RIP: 0010:skb_checksum_help+0x525/0x730 [ 89.017058][ T5062] Code: 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9 01 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 60 28 a3 8b e8 6b 2b 1a f9 <0f> 0b e9 46 ff ff ff e8 8f 04 54 f9 44 0f b6 25 5c ba 84 06 31 ff [ 89.037122][ T5062] RSP: 0018:ffffc90003b9f098 EFLAGS: 00010286 [ 89.043810][ T5062] RAX: 0000000000000000 RBX: ffff88801ff78b40 RCX: 0000000000000000 [ 89.051838][ T5062] RDX: ffff888025391dc0 RSI: ffffffff814dfa96 RDI: 0000000000000001 [ 89.060164][ T5062] RBP: ffff88801ff78bb4 R08: 0000000000000001 R09: 0000000000000000 [ 89.068213][ T5062] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 89.076264][ T5062] R13: 0000000000000529 R14: ffff88801ff78bb0 R15: 00000000000005d1 [ 89.084410][ T5062] FS: 00005555566c1380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 89.093407][ T5062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.100004][ T5062] CR2: 000000002000d000 CR3: 000000001f120000 CR4: 00000000003506f0 [ 89.108184][ T5062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.116273][ T5062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.124464][ T5062] Call Trace: [ 89.127798][ T5062] [ 89.130732][ T5062] ? show_regs+0x8f/0xa0 [ 89.135075][ T5062] ? __warn+0xe6/0x380 [ 89.139231][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.144451][ T5062] ? report_bug+0x3bc/0x580 [ 89.149010][ T5062] ? handle_bug+0x3c/0x70 [ 89.153522][ T5062] ? exc_invalid_op+0x17/0x40 [ 89.158250][ T5062] ? asm_exc_invalid_op+0x1a/0x20 [ 89.163409][ T5062] ? __warn_printk+0x1a6/0x350 [ 89.168235][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.173437][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.178685][ T5062] ip_do_fragment+0xa1b/0x18b0 [ 89.183512][ T5062] ? ip_fragment.constprop.0+0x230/0x230 [ 89.189185][ T5062] ? ip_frag_next+0xa40/0xa40 [ 89.194055][ T5062] ip_fragment.constprop.0+0x161/0x230 [ 89.199666][ T5062] __ip_finish_output+0x49a/0x640 [ 89.204784][ T5062] ip_finish_output+0x31/0x310 [ 89.209594][ T5062] ip_mc_output+0x1dd/0x6a0 [ 89.214212][ T5062] ip_local_out+0xaf/0x190 [ 89.218666][ T5062] iptunnel_xmit+0x61a/0x9e0 [ 89.223331][ T5062] ip_tunnel_xmit+0x1e4f/0x3370 [ 89.228231][ T5062] ? ip_md_tunnel_xmit+0x1fc0/0x1fc0 [ 89.233616][ T5062] ? skb_mac_gso_segment+0x3d1/0x610 [ 89.238990][ T5062] ? __gre_xmit+0x4f5/0x990 [ 89.243577][ T5062] ipgre_xmit+0x63c/0x910 [ 89.248033][ T5062] dev_hard_start_xmit+0x13d/0x6c0 [ 89.253244][ T5062] __dev_queue_xmit+0x9b4/0x3d00 [ 89.258263][ T5062] ? netdev_core_pick_tx+0x390/0x390 [ 89.263641][ T5062] ? skb_partial_csum_set+0x202/0x390 [ 89.269067][ T5062] ? virtio_net_hdr_to_skb.constprop.0+0x4d9/0x11e0 [ 89.275758][ T5062] ? packet_release+0xdc0/0xdc0 [ 89.280673][ T5062] packet_xmit+0x257/0x380 [ 89.285286][ T5062] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 89.291242][ T5062] packet_sendmsg+0x24d9/0x5580 [ 89.296345][ T5062] ? preempt_count_sub+0x150/0x150 [ 89.301805][ T5062] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 89.307745][ T5062] ? aa_sk_perm+0x2c1/0xad0 [ 89.312321][ T5062] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 89.318259][ T5062] ? aa_af_perm+0x260/0x260 [ 89.322831][ T5062] ? import_ubuf+0x1f5/0x260 [ 89.327462][ T5062] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 89.332959][ T5062] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 89.339013][ T5062] __sock_sendmsg+0xd5/0x180 [ 89.343695][ T5062] ____sys_sendmsg+0x6ac/0x940 [ 89.348668][ T5062] ? copy_msghdr_from_user+0x10b/0x160 [ 89.354307][ T5062] ? kernel_sendmsg+0x50/0x50 [ 89.359039][ T5062] ___sys_sendmsg+0x135/0x1d0 [ 89.363821][ T5062] ? do_recvmmsg+0x740/0x740 [ 89.368468][ T5062] ? lock_sync+0x190/0x190 [ 89.373059][ T5062] ? ptrace_stop.part.0+0x4af/0x900 [ 89.378300][ T5062] ? __fget_light+0x1fc/0x260 [ 89.383487][ T5062] __sys_sendmsg+0x117/0x1e0 [ 89.388112][ T5062] ? __sys_sendmsg_sock+0x30/0x30 [ 89.393215][ T5062] ? ptrace_notify+0xf4/0x130 [ 89.398367][ T5062] ? lockdep_hardirqs_on+0x7d/0x100 [ 89.403968][ T5062] ? _raw_spin_unlock_irq+0x2e/0x50 [ 89.409286][ T5062] ? ptrace_notify+0xf4/0x130 [ 89.414122][ T5062] do_syscall_64+0x38/0xb0 [ 89.418658][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 89.424649][ T5062] RIP: 0033:0x7eff58547b69 [ 89.429092][ T5062] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 [ 89.449037][ T5062] RSP: 002b:00007ffd238dc968 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.457562][ T5062] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007eff58547b69 [ 89.465602][ T5062] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 89.473723][ T5062] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 89.481794][ T5062] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd238dc9c0 [ 89.489815][ T5062] R13: 0000000000000001 R14: 00007ffd238dc9c0 R15: 0000000000000003 [ 89.497893][ T5062] [ 89.501923][ T5062] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 89.509212][ T5062] CPU: 0 PID: 5062 Comm: syz-executor826 Not tainted 6.6.0-rc5-syzkaller-01269-gc49bba011b51 #0 [ 89.519654][ T5062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 89.530340][ T5062] Call Trace: [ 89.533806][ T5062] [ 89.536741][ T5062] dump_stack_lvl+0xd9/0x1b0 [ 89.541352][ T5062] panic+0x6a6/0x750 [ 89.545275][ T5062] ? panic_smp_self_stop+0xa0/0xa0 [ 89.550457][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.555674][ T5062] check_panic_on_warn+0xab/0xb0 [ 89.560640][ T5062] __warn+0xf2/0x380 [ 89.564645][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.569792][ T5062] report_bug+0x3bc/0x580 [ 89.574257][ T5062] handle_bug+0x3c/0x70 [ 89.578672][ T5062] exc_invalid_op+0x17/0x40 [ 89.583247][ T5062] asm_exc_invalid_op+0x1a/0x20 [ 89.588104][ T5062] RIP: 0010:skb_checksum_help+0x525/0x730 [ 89.593832][ T5062] Code: 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9 01 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 60 28 a3 8b e8 6b 2b 1a f9 <0f> 0b e9 46 ff ff ff e8 8f 04 54 f9 44 0f b6 25 5c ba 84 06 31 ff [ 89.613456][ T5062] RSP: 0018:ffffc90003b9f098 EFLAGS: 00010286 [ 89.619550][ T5062] RAX: 0000000000000000 RBX: ffff88801ff78b40 RCX: 0000000000000000 [ 89.627567][ T5062] RDX: ffff888025391dc0 RSI: ffffffff814dfa96 RDI: 0000000000000001 [ 89.635562][ T5062] RBP: ffff88801ff78bb4 R08: 0000000000000001 R09: 0000000000000000 [ 89.643748][ T5062] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 89.652070][ T5062] R13: 0000000000000529 R14: ffff88801ff78bb0 R15: 00000000000005d1 [ 89.660048][ T5062] ? __warn_printk+0x1a6/0x350 [ 89.664846][ T5062] ? skb_checksum_help+0x525/0x730 [ 89.670009][ T5062] ip_do_fragment+0xa1b/0x18b0 [ 89.674887][ T5062] ? ip_fragment.constprop.0+0x230/0x230 [ 89.680592][ T5062] ? ip_frag_next+0xa40/0xa40 [ 89.685297][ T5062] ip_fragment.constprop.0+0x161/0x230 [ 89.690774][ T5062] __ip_finish_output+0x49a/0x640 [ 89.696172][ T5062] ip_finish_output+0x31/0x310 [ 89.700970][ T5062] ip_mc_output+0x1dd/0x6a0 [ 89.705490][ T5062] ip_local_out+0xaf/0x190 [ 89.709922][ T5062] iptunnel_xmit+0x61a/0x9e0 [ 89.714538][ T5062] ip_tunnel_xmit+0x1e4f/0x3370 [ 89.719482][ T5062] ? ip_md_tunnel_xmit+0x1fc0/0x1fc0 [ 89.724808][ T5062] ? skb_mac_gso_segment+0x3d1/0x610 [ 89.730146][ T5062] ? __gre_xmit+0x4f5/0x990 [ 89.734667][ T5062] ipgre_xmit+0x63c/0x910 [ 89.739021][ T5062] dev_hard_start_xmit+0x13d/0x6c0 [ 89.744155][ T5062] __dev_queue_xmit+0x9b4/0x3d00 [ 89.749147][ T5062] ? netdev_core_pick_tx+0x390/0x390 [ 89.754499][ T5062] ? skb_partial_csum_set+0x202/0x390 [ 89.760076][ T5062] ? virtio_net_hdr_to_skb.constprop.0+0x4d9/0x11e0 [ 89.766721][ T5062] ? packet_release+0xdc0/0xdc0 [ 89.771638][ T5062] packet_xmit+0x257/0x380 [ 89.776124][ T5062] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 89.782040][ T5062] packet_sendmsg+0x24d9/0x5580 [ 89.786910][ T5062] ? preempt_count_sub+0x150/0x150 [ 89.792043][ T5062] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 89.797989][ T5062] ? aa_sk_perm+0x2c1/0xad0 [ 89.802502][ T5062] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 89.808504][ T5062] ? aa_af_perm+0x260/0x260 [ 89.813079][ T5062] ? import_ubuf+0x1f5/0x260 [ 89.817779][ T5062] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 89.823077][ T5062] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 89.829074][ T5062] __sock_sendmsg+0xd5/0x180 [ 89.833686][ T5062] ____sys_sendmsg+0x6ac/0x940 [ 89.838473][ T5062] ? copy_msghdr_from_user+0x10b/0x160 [ 89.843947][ T5062] ? kernel_sendmsg+0x50/0x50 [ 89.848670][ T5062] ___sys_sendmsg+0x135/0x1d0 [ 89.853403][ T5062] ? do_recvmmsg+0x740/0x740 [ 89.858065][ T5062] ? lock_sync+0x190/0x190 [ 89.862592][ T5062] ? ptrace_stop.part.0+0x4af/0x900 [ 89.868011][ T5062] ? __fget_light+0x1fc/0x260 [ 89.872714][ T5062] __sys_sendmsg+0x117/0x1e0 [ 89.877344][ T5062] ? __sys_sendmsg_sock+0x30/0x30 [ 89.882388][ T5062] ? ptrace_notify+0xf4/0x130 [ 89.887121][ T5062] ? lockdep_hardirqs_on+0x7d/0x100 [ 89.892340][ T5062] ? _raw_spin_unlock_irq+0x2e/0x50 [ 89.897558][ T5062] ? ptrace_notify+0xf4/0x130 [ 89.902500][ T5062] do_syscall_64+0x38/0xb0 [ 89.906935][ T5062] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 89.912846][ T5062] RIP: 0033:0x7eff58547b69 [ 89.917306][ T5062] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 [ 89.936958][ T5062] RSP: 002b:00007ffd238dc968 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.945416][ T5062] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007eff58547b69 [ 89.953544][ T5062] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 89.961618][ T5062] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 89.969807][ T5062] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd238dc9c0 [ 89.977786][ T5062] R13: 0000000000000001 R14: 00007ffd238dc9c0 R15: 0000000000000003 [ 89.985875][ T5062] [ 89.989213][ T5062] Kernel Offset: disabled [ 89.993638][ T5062] Rebooting in 86400 seconds..