./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2457013497 <...> Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts. execve("./syz-executor2457013497", ["./syz-executor2457013497"], 0x7fff84abff10 /* 10 vars */) = 0 brk(NULL) = 0x555555fdb000 brk(0x555555fdbc40) = 0x555555fdbc40 arch_prctl(ARCH_SET_FS, 0x555555fdb300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2457013497", 4096) = 28 brk(0x555555ffcc40) = 0x555555ffcc40 brk(0x555555ffd000) = 0x555555ffd000 mprotect(0x7f335bc38000, 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 5009 attached , child_tidptr=0x555555fdb5d0) = 5009 [pid 5009] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setsid() = 1 [pid 5009] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5009] unshare(CLONE_NEWNS) = 0 [pid 5009] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5009] unshare(CLONE_NEWIPC) = 0 [pid 5009] unshare(CLONE_NEWCGROUP) = 0 [pid 5009] unshare(CLONE_NEWUTS) = 0 [pid 5009] unshare(CLONE_SYSVSEM) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "16777216", 8) = 8 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "536870912", 9) = 9 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "8192", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5009] close(3) = 0 [pid 5009] getpid() = 1 [pid 5009] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<frame_sz = 131072 [ 57.018741][ T5009] WARNING: CPU: 0 PID: 5009 at net/core/filter.c:4121 bpf_xdp_adjust_tail+0x239/0x250 [ 57.028338][ T5009] Modules linked in: [ 57.032221][ T5009] CPU: 0 PID: 5009 Comm: syz-executor245 Not tainted 6.4.0-syzkaller-11478-gd528014517f2 #0 [ 57.042495][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 57.052596][ T5009] RIP: 0010:bpf_xdp_adjust_tail+0x239/0x250 [ 57.058531][ T5009] Code: ff ff 48 89 ef e8 c7 ad 34 f9 e9 64 fe ff ff e8 ad fd db f8 c6 05 3f 14 d3 05 01 48 c7 c7 40 9b f6 8b 44 89 ee e8 17 1b a3 f8 <0f> 0b 48 c7 c0 ea ff ff ff e9 24 ff ff ff 66 0f 1f 84 00 00 00 00 [ 57.078178][ T5009] RSP: 0018:ffffc90003a5f798 EFLAGS: 00010246 [ 57.084280][ T5009] RAX: 5b4d212461e43800 RBX: ffffc90003a5f960 RCX: ffff88802273d940 [ 57.092325][ T5009] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 57.100426][ T5009] RBP: 0000000000000000 R08: ffffffff815321f2 R09: 1ffff9200074be6c [ 57.108460][ T5009] R10: dffffc0000000000 R11: fffff5200074be6d R12: ffffc90003a5f978 [ 57.116500][ T5009] R13: 0000000000020000 R14: ffff88807362feef R15: 1ffff9200074bf2d [ 57.124504][ T5009] FS: 0000555555fdb300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 57.133417][ T5009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.140022][ T5009] CR2: 0000000020011000 CR3: 0000000023f5a000 CR4: 00000000003506f0 [ 57.148023][ T5009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.156023][ T5009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.164046][ T5009] Call Trace: [ 57.167310][ T5009] [ 57.170222][ T5009] ? __warn+0x162/0x4a0 [ 57.174421][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.179720][ T5009] ? report_bug+0x2b3/0x500 [ 57.184260][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.189554][ T5009] ? handle_bug+0x3d/0x70 [ 57.193920][ T5009] ? exc_invalid_op+0x1a/0x50 [ 57.198606][ T5009] ? asm_exc_invalid_op+0x1a/0x20 [ 57.203619][ T5009] ? __warn_printk+0x292/0x360 [ 57.208419][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.213716][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.219033][ T5009] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 57.224542][ T5009] bpf_prog_run_generic_xdp+0x576/0x11d0 [ 57.230188][ T5009] do_xdp_generic+0x417/0x6f0 [ 57.235062][ T5009] ? trace_xdp_exception+0x200/0x200 [ 57.240377][ T5009] ? local_bh_disable+0x5/0x20 [ 57.245194][ T5009] tun_get_user+0x256e/0x4180 [ 57.249880][ T5009] ? finish_lock_switch+0x93/0x110 [ 57.255033][ T5009] ? tun_ring_recv+0xcc0/0xcc0 [ 57.259814][ T5009] ? ref_tracker_dir_exit+0x540/0x540 [ 57.265220][ T5009] ? rcu_lock_release+0x5/0x30 [ 57.269986][ T5009] ? __lock_acquire+0x7f70/0x7f70 [ 57.275061][ T5009] tun_chr_write_iter+0x113/0x1f0 [ 57.280098][ T5009] vfs_write+0x782/0xaf0 [ 57.284380][ T5009] ? file_end_write+0x250/0x250 [ 57.289241][ T5009] ? lockdep_hardirqs_on+0x98/0x140 [ 57.294467][ T5009] ? __fdget_pos+0x1df/0x2f0 [ 57.299065][ T5009] ksys_write+0x1a0/0x2c0 [ 57.303387][ T5009] ? __ia32_sys_read+0x90/0x90 [ 57.308186][ T5009] ? syscall_enter_from_user_mode+0x32/0x230 [ 57.314194][ T5009] ? syscall_enter_from_user_mode+0x8c/0x230 [ 57.320166][ T5009] do_syscall_64+0x41/0xc0 [ 57.324608][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.330522][ T5009] RIP: 0033:0x7f335bb85c33 [ 57.334968][ T5009] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 57.354628][ T5009] RSP: 002b:00007ffdba29f2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 57.363058][ T5009] RAX: ffffffffffffffda RBX: 00007ffdba29f2f0 RCX: 00007f335bb85c33 [ 57.371051][ T5009] RDX: 000000000000fdef RSI: 0000000020001600 RDI: 00000000000000c8 [ 57.379066][ T5009] RBP: 00007ffdba29f350 R08: 0000000000000000 R09: 0000000000000000 [ 57.387078][ T5009] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 57.395074][ T5009] R13: 00007ffdba29f300 R14: 00007ffdba29f320 R15: 00007ffdba29f2e8 [ 57.403040][ T5009] [ 57.406084][ T5009] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 57.413364][ T5009] CPU: 0 PID: 5009 Comm: syz-executor245 Not tainted 6.4.0-syzkaller-11478-gd528014517f2 #0 [ 57.423440][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 57.433490][ T5009] Call Trace: [ 57.436761][ T5009] [ 57.439685][ T5009] dump_stack_lvl+0x1e7/0x2d0 [ 57.444356][ T5009] ? nf_tcp_handle_invalid+0x650/0x650 [ 57.449803][ T5009] ? panic+0x770/0x770 [ 57.453864][ T5009] ? vscnprintf+0x5d/0x80 [ 57.458192][ T5009] panic+0x30f/0x770 [ 57.462073][ T5009] ? __warn+0x171/0x4a0 [ 57.466214][ T5009] ? __memcpy_flushcache+0x2b0/0x2b0 [ 57.471491][ T5009] __warn+0x314/0x4a0 [ 57.475461][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.480729][ T5009] report_bug+0x2b3/0x500 [ 57.485048][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.490329][ T5009] handle_bug+0x3d/0x70 [ 57.494477][ T5009] exc_invalid_op+0x1a/0x50 [ 57.498973][ T5009] asm_exc_invalid_op+0x1a/0x20 [ 57.503813][ T5009] RIP: 0010:bpf_xdp_adjust_tail+0x239/0x250 [ 57.509700][ T5009] Code: ff ff 48 89 ef e8 c7 ad 34 f9 e9 64 fe ff ff e8 ad fd db f8 c6 05 3f 14 d3 05 01 48 c7 c7 40 9b f6 8b 44 89 ee e8 17 1b a3 f8 <0f> 0b 48 c7 c0 ea ff ff ff e9 24 ff ff ff 66 0f 1f 84 00 00 00 00 [ 57.529299][ T5009] RSP: 0018:ffffc90003a5f798 EFLAGS: 00010246 [ 57.535359][ T5009] RAX: 5b4d212461e43800 RBX: ffffc90003a5f960 RCX: ffff88802273d940 [ 57.543318][ T5009] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 57.551279][ T5009] RBP: 0000000000000000 R08: ffffffff815321f2 R09: 1ffff9200074be6c [ 57.559241][ T5009] R10: dffffc0000000000 R11: fffff5200074be6d R12: ffffc90003a5f978 [ 57.567203][ T5009] R13: 0000000000020000 R14: ffff88807362feef R15: 1ffff9200074bf2d [ 57.575167][ T5009] ? __warn_printk+0x292/0x360 [ 57.579933][ T5009] ? bpf_xdp_adjust_tail+0x239/0x250 [ 57.585211][ T5009] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 57.590659][ T5009] bpf_prog_run_generic_xdp+0x576/0x11d0 [ 57.596306][ T5009] do_xdp_generic+0x417/0x6f0 [ 57.600975][ T5009] ? trace_xdp_exception+0x200/0x200 [ 57.606249][ T5009] ? local_bh_disable+0x5/0x20 [ 57.611015][ T5009] tun_get_user+0x256e/0x4180 [ 57.615686][ T5009] ? finish_lock_switch+0x93/0x110 [ 57.620799][ T5009] ? tun_ring_recv+0xcc0/0xcc0 [ 57.625553][ T5009] ? ref_tracker_dir_exit+0x540/0x540 [ 57.630918][ T5009] ? rcu_lock_release+0x5/0x30 [ 57.635669][ T5009] ? __lock_acquire+0x7f70/0x7f70 [ 57.640701][ T5009] tun_chr_write_iter+0x113/0x1f0 [ 57.645721][ T5009] vfs_write+0x782/0xaf0 [ 57.649966][ T5009] ? file_end_write+0x250/0x250 [ 57.654817][ T5009] ? lockdep_hardirqs_on+0x98/0x140 [ 57.660003][ T5009] ? __fdget_pos+0x1df/0x2f0 [ 57.664675][ T5009] ksys_write+0x1a0/0x2c0 [ 57.669000][ T5009] ? __ia32_sys_read+0x90/0x90 [ 57.673755][ T5009] ? syscall_enter_from_user_mode+0x32/0x230 [ 57.679729][ T5009] ? syscall_enter_from_user_mode+0x8c/0x230 [ 57.685698][ T5009] do_syscall_64+0x41/0xc0 [ 57.690114][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.696012][ T5009] RIP: 0033:0x7f335bb85c33 [ 57.700442][ T5009] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 57.720044][ T5009] RSP: 002b:00007ffdba29f2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 57.728457][ T5009] RAX: ffffffffffffffda RBX: 00007ffdba29f2f0 RCX: 00007f335bb85c33 [ 57.736432][ T5009] RDX: 000000000000fdef RSI: 0000000020001600 RDI: 00000000000000c8 [ 57.744394][ T5009] RBP: 00007ffdba29f350 R08: 0000000000000000 R09: 0000000000000000 [ 57.752354][ T5009] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 57.760313][ T5009] R13: 00007ffdba29f300 R14: 00007ffdba29f320 R15: 00007ffdba29f2e8 [ 57.768283][ T5009] [ 57.771520][ T5009] Kernel Offset: disabled [ 57.775899][ T5009] Rebooting in 86400 seconds..