./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor532336561 <...> Warning: Permanently added '10.128.10.36' (ED25519) to the list of known hosts. execve("./syz-executor532336561", ["./syz-executor532336561"], 0x7ffd2a3dac10 /* 10 vars */) = 0 brk(NULL) = 0x55556b69d000 brk(0x55556b69dd00) = 0x55556b69dd00 arch_prctl(ARCH_SET_FS, 0x55556b69d380) = 0 set_tid_address(0x55556b69d650) = 5779 set_robust_list(0x55556b69d660, 24) = 0 rseq(0x55556b69dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor532336561", 4096) = 27 getrandom("\x44\xe9\xad\xb3\x35\xdf\xd4\xe6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556b69dd00 brk(0x55556b6bed00) = 0x55556b6bed00 brk(0x55556b6bf000) = 0x55556b6bf000 mprotect(0x7f17a7fbe000, 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=0x55556b69d650) = 5780 ./strace-static-x86_64: Process 5780 attached [pid 5780] set_robust_list(0x55556b69d660, 24) = 0 [pid 5780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5780] getppid() = 0 [pid 5780] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5780] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5780] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5780] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5780] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5780] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5780] unshare(CLONE_NEWNS) = 0 [pid 5780] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5780] unshare(CLONE_NEWIPC) = 0 [pid 5780] unshare(CLONE_NEWCGROUP) = 0 [pid 5780] unshare(CLONE_NEWUTS) = 0 [pid 5780] unshare(CLONE_SYSVSEM) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "16777216", 8) = 8 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "536870912", 9) = 9 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "1024", 4) = 4 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "8192", 4) = 4 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "1024", 4) = 4 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "1024", 4) = 4 [pid 5780] close(3) = 0 [pid 5780] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5780] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5780] close(3) = 0 [pid 5780] getpid() = 1 [pid 5780] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5808] set_robust_list(0x55556b69d660, 24) = 0 [pid 5808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5808] setpgid(0, 0) = 0 [pid 5808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5780] <... clone resumed>, child_tidptr=0x55556b69d650) = 2 [pid 5808] <... openat resumed>) = 3 [pid 5808] write(3, "1000", 4) = 4 [pid 5808] close(3) = 0 [pid 5808] read(200, "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5808] read(200, "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5808] read(200, executing program "\x33\x33\x00\x00\x00\x16\xaa\xaa\xaa\xaa\xaa\xaa\x86\xdd\x60\x00\x00\x00\x00\x38\x00\x01\xfe\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x16\x3a\x00\x05\x02\x00\x00\x01\x00\x8f\x00\xc2\x46\x00\x00\x00\x02\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xaa\xaa\xaa\x04\x00\x00\x00\xff\x02\x00\x00\x00\x00"..., 1000) = 110 [pid 5808] read(200, 0x7ffd5309c440, 1000) = -1 EAGAIN (Resource temporarily unavailable) [pid 5808] write(1, "executing program\n", 18) = 18 [pid 5808] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5808] ioctl(3, SIOCGIFINDEX, {ifr_name="batadv_slave_0", ifr_ifindex=38}) = 0 [pid 5808] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5808] ioctl(4, SIOCGIFINDEX, {ifr_name="syz_tun", ifr_ifindex=11}) = 0 [pid 5808] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x10\x00\x03\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x03\x00\x00\x20\x00\x12\x80\x08\x00\x01\x00\x68\x73\x72\x00\x14\x00\x02\x80\x08\x00\x02\x00\x26\x00\x00\x00\x08\x00\x01\x00\x0b\x00\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [ 204.754479][ T5808] syz_tun: entered promiscuous mode [ 204.765230][ T5808] batadv_slave_0: entered promiscuous mode [ 204.777402][ T5808] ===================================================== [ 204.784825][ T5808] BUG: KMSAN: uninit-value in hsr_get_node+0xd05/0xd30 [ 204.791996][ T5808] hsr_get_node+0xd05/0xd30 [ 204.796662][ T5808] hsr_forward_skb+0x3ca/0x3ef0 [ 204.801709][ T5808] hsr_handle_frame+0xd15/0xf40 [ 204.806753][ T5808] __netif_receive_skb_core+0x1f80/0x6cd0 [ 204.812774][ T5808] __netif_receive_skb+0xca/0xa00 [ 204.818012][ T5808] netif_receive_skb+0x58/0x660 [ 204.823133][ T5808] tun_rx_batched+0x3ee/0x980 [ 204.828110][ T5808] tun_get_user+0x52b3/0x6e50 [ 204.833041][ T5808] tun_chr_write_iter+0x3ac/0x5d0 [ 204.838291][ T5808] vfs_write+0xb34/0x1540 [ 204.842877][ T5808] ksys_write+0x240/0x4b0 [ 204.847356][ T5808] __x64_sys_write+0x93/0xe0 [ 204.852154][ T5808] x64_sys_call+0x3161/0x3c30 [ 204.857003][ T5808] do_syscall_64+0xcd/0x1e0 [ 204.861721][ T5808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 204.867837][ T5808] [ 204.870320][ T5808] Uninit was created at: [ 204.874797][ T5808] __alloc_frozen_pages_noprof+0x9a7/0xe00 [ 204.880854][ T5808] alloc_pages_mpol+0x4cd/0x890 [ 204.885929][ T5808] alloc_pages_noprof+0x1b5/0x250 [ 204.891263][ T5808] skb_page_frag_refill+0x2bf/0x7c0 [ 204.896654][ T5808] tun_get_user+0xe00/0x6e50 [ 204.901470][ T5808] tun_chr_write_iter+0x3ac/0x5d0 [ 204.906703][ T5808] vfs_write+0xb34/0x1540 [ 204.911306][ T5808] ksys_write+0x240/0x4b0 [ 204.915840][ T5808] __x64_sys_write+0x93/0xe0 [ 204.920693][ T5808] x64_sys_call+0x3161/0x3c30 [ 204.925578][ T5808] do_syscall_64+0xcd/0x1e0 [ 204.930456][ T5808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 204.936581][ T5808] [ 204.938993][ T5808] CPU: 1 UID: 0 PID: 5808 Comm: syz-executor532 Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0 [ 204.950010][ T5808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 204.960368][ T5808] ===================================================== [ 204.967406][ T5808] Disabling lock debugging due to kernel taint [ 204.973755][ T5808] Kernel panic - not syncing: kmsan.panic set ... [ 204.980333][ T5808] CPU: 1 UID: 0 PID: 5808 Comm: syz-executor532 Tainted: G B 6.13.0-syzkaller-10003-ga86bf2283d2c #0 [ 204.992729][ T5808] Tainted: [B]=BAD_PAGE [ 204.996959][ T5808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 205.007157][ T5808] Call Trace: [ 205.010579][ T5808] [ 205.013647][ T5808] dump_stack_lvl+0x216/0x2d0 [ 205.018463][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.024475][ T5808] dump_stack+0x1e/0x24 [ 205.028731][ T5808] panic+0x4e2/0xcf0 [ 205.032801][ T5808] ? kmsan_get_metadata+0xb1/0x1c0 [ 205.038140][ T5808] kmsan_report+0x2c7/0x2d0 [ 205.042777][ T5808] ? __msan_warning+0x95/0x120 [ 205.047682][ T5808] ? hsr_get_node+0xd05/0xd30 [ 205.052596][ T5808] ? hsr_forward_skb+0x3ca/0x3ef0 [ 205.057756][ T5808] ? hsr_handle_frame+0xd15/0xf40 [ 205.062968][ T5808] ? __netif_receive_skb_core+0x1f80/0x6cd0 [ 205.069002][ T5808] ? __netif_receive_skb+0xca/0xa00 [ 205.074333][ T5808] ? netif_receive_skb+0x58/0x660 [ 205.079485][ T5808] ? tun_rx_batched+0x3ee/0x980 [ 205.084492][ T5808] ? tun_get_user+0x52b3/0x6e50 [ 205.089524][ T5808] ? tun_chr_write_iter+0x3ac/0x5d0 [ 205.094874][ T5808] ? vfs_write+0xb34/0x1540 [ 205.099529][ T5808] ? ksys_write+0x240/0x4b0 [ 205.104189][ T5808] ? __x64_sys_write+0x93/0xe0 [ 205.109205][ T5808] ? x64_sys_call+0x3161/0x3c30 [ 205.114239][ T5808] ? do_syscall_64+0xcd/0x1e0 [ 205.119039][ T5808] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 205.125274][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.131247][ T5808] ? _raw_spin_lock_irqsave+0x35/0xc0 [ 205.136821][ T5808] ? filter_irq_stacks+0x60/0x1a0 [ 205.142015][ T5808] ? stack_depot_save_flags+0x2c/0x750 [ 205.147697][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.153038][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.158380][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.163714][ T5808] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 205.170266][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.175682][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.181119][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.187137][ T5808] __msan_warning+0x95/0x120 [ 205.191889][ T5808] hsr_get_node+0xd05/0xd30 [ 205.196544][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.201885][ T5808] hsr_forward_skb+0x3ca/0x3ef0 [ 205.206881][ T5808] hsr_handle_frame+0xd15/0xf40 [ 205.211901][ T5808] ? __pfx_hsr_handle_frame+0x10/0x10 [ 205.217447][ T5808] __netif_receive_skb_core+0x1f80/0x6cd0 [ 205.223364][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.229317][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.234662][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.240652][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.246074][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.252050][ T5808] ? filter_irq_stacks+0x60/0x1a0 [ 205.257360][ T5808] __netif_receive_skb+0xca/0xa00 [ 205.262588][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.267921][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.273861][ T5808] ? __rcu_read_lock+0x46/0x70 [ 205.278776][ T5808] netif_receive_skb+0x58/0x660 [ 205.283745][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.289679][ T5808] ? tun_rx_batched+0x37c/0x980 [ 205.294689][ T5808] ? tun_rx_batched+0x37c/0x980 [ 205.299691][ T5808] tun_rx_batched+0x3ee/0x980 [ 205.304550][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.309869][ T5808] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 205.315830][ T5808] tun_get_user+0x52b3/0x6e50 [ 205.320723][ T5808] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 205.326707][ T5808] ? stack_depot_save_flags+0x6db/0x750 [ 205.332473][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.337863][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.343285][ T5808] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 205.349867][ T5808] tun_chr_write_iter+0x3ac/0x5d0 [ 205.355109][ T5808] vfs_write+0xb34/0x1540 [ 205.359562][ T5808] ? __pfx_tun_chr_write_iter+0x10/0x10 [ 205.365288][ T5808] ksys_write+0x240/0x4b0 [ 205.369795][ T5808] ? kmsan_get_metadata+0x13e/0x1c0 [ 205.375161][ T5808] __x64_sys_write+0x93/0xe0 [ 205.379877][ T5808] x64_sys_call+0x3161/0x3c30 [ 205.384700][ T5808] do_syscall_64+0xcd/0x1e0 [ 205.389357][ T5808] ? clear_bhb_loop+0x25/0x80 [ 205.394287][ T5808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 205.400372][ T5808] RIP: 0033:0x7f17a7f458d0 [ 205.404931][ T5808] Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 d7 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 [ 205.424690][ T5808] RSP: 002b:00007ffd5309c838 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 205.433371][ T5808] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f17a7f458d0 [ 205.441492][ T5808] RDX: 000000000000000e RSI: 00000000200001c0 RDI: 00000000000000c8 [ 205.449666][ T5808] RBP: 00007ffd5309c870 R08: 0000000000000000 R09: 0000000000000001 [ 205.457736][ T5808] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000f4240 [ 205.465799][ T5808] R13: 00007f17a7f93441 R14: 00007ffd5309c854 R15: 00007ffd5309c860 [ 205.473923][ T5808] [ 205.477471][ T5808] Kernel Offset: disabled [ 205.481886][ T5808] Rebooting in 86400 seconds..