./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4273698084 <...> Warning: Permanently added '10.128.1.38' (ED25519) to the list of known hosts. execve("./syz-executor4273698084", ["./syz-executor4273698084"], 0x7ffe6edafd70 /* 10 vars */) = 0 brk(NULL) = 0x55555a372000 brk(0x55555a372d40) = 0x55555a372d40 arch_prctl(ARCH_SET_FS, 0x55555a3723c0) = 0 set_tid_address(0x55555a372690) = 5014 set_robust_list(0x55555a3726a0, 24) = 0 rseq(0x55555a372ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4273698084", 4096) = 28 getrandom("\xf1\x6e\x14\x9c\x77\x2c\x16\x94", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555a372d40 brk(0x55555a393d40) = 0x55555a393d40 brk(0x55555a394000) = 0x55555a394000 mprotect(0x7fbb908e8000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555a372690) = 5015 ./strace-static-x86_64: Process 5015 attached [pid 5015] set_robust_list(0x55555a3726a0, 24) = 0 [pid 5015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5015] setpgid(0, 0) = 0 [pid 5015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5015] write(3, "1000", 4) = 4 [pid 5015] close(3) = 0 [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] rt_sigaction(SIGRT_1, {sa_handler=0x7fbb9088b3f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fbb9087ca70}, NULL, 8) = 0 [pid 5015] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbb907ff000 [pid 5015] mprotect(0x7fbb90800000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5015] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5015] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fbb9081f990, parent_tid=0x7fbb9081f990, exit_signal=0, stack=0x7fbb907ff000, stack_size=0x20300, tls=0x7fbb9081f6c0} => {parent_tid=[5016]}, 88) = 5016 [pid 5015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5016 attached [pid 5016] rseq(0x7fbb9081ffe0, 0x20, 0, 0x53053053) = 0 [pid 5016] set_robust_list(0x7fbb9081f9a0, 24) = 0 [pid 5016] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5016] openat(AT_FDCWD, "/dev/virtual_nci", O_RDWR) = 3 [pid 5016] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] <... futex resumed>) = 0 [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5016] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] <... futex resumed>) = 0 [pid 5016] futex(0x7fbb908ee368, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000 [pid 5016] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5015] <... futex resumed>) = 0 [pid 5016] sendto(4, [{nlmsg_len=28, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x08\x00\x02\x00\x6e\x66\x63\x00"], 28, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12 [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] <... sendto resumed>) = 28 [pid 5016] recvfrom(4, [{nlmsg_len=472, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5015}, "\x01\x02\x00\x00\x08\x00\x02\x00\x6e\x66\x63\x00\x06\x00\x01\x00\x1e\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x1f\x00\x00\x00\x80\x01\x06\x00\x14\x00\x01\x00\x08\x00\x01\x00\x01\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x02\x00\x08\x00\x01\x00\x02\x00\x00\x00\x08\x00\x02\x00\x0b\x00\x00\x00\x14\x00\x03\x00\x08\x00\x01\x00\x03\x00\x00\x00"...], 4096, 0, NULL, NULL) = 472 [pid 5016] recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5015}, {error=0, msg={nlmsg_len=28, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 [pid 5016] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5016] futex(0x7fbb908ee368, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5015] <... futex resumed>) = 0 [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000 [pid 5016] <... futex resumed>) = 0 [pid 5015] <... futex resumed>) = 1 [pid 5016] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] <... socket resumed>) = 5 [pid 5016] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] <... futex resumed>) = 0 [pid 5016] futex(0x7fbb908ee368, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000 [pid 5016] <... futex resumed>) = 0 [pid 5015] <... futex resumed>) = 1 [pid 5016] ioctl(3, _IOC(_IOC_NONE, 0, 0, 0) [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5016] <... ioctl resumed>, 0x20000180) = 0 [pid 5016] futex(0x7fbb908ee36c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5015] <... futex resumed>) = 0 [pid 5016] futex(0x7fbb908ee368, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5015] futex(0x7fbb908ee368, FUTEX_WAKE_PRIVATE, 1000000 [pid 5016] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x1c\x00\x00\x00\x1e\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x04\x00\x00\x08\x00\x01\x00\x02\x00\x00\x00", iov_len=28}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5015] <... futex resumed>) = 0 [pid 5015] futex(0x7fbb908ee36c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5015] futex(0x7fbb908ee37c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fbb907de000 [pid 5015] mprotect(0x7fbb907df000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5015] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5015] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fbb907fe990, parent_tid=0x7fbb907fe990, exit_signal=0, stack=0x7fbb907de000, stack_size=0x20300, tls=0x7fbb907fe6c0} => {parent_tid=[5021]}, 88) = 5021 ./strace-static-x86_64: Process 5021 attached [pid 5015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5015] futex(0x7fbb908ee378, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5015] futex(0x7fbb908ee37c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5021] rseq(0x7fbb907fefe0, 0x20, 0, 0x53053053) = 0 [pid 5021] set_robust_list(0x7fbb907fe9a0, 24) = 0 [pid 5021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5021] write(3, "\x61\x03\x00\xe0\xff\xff\xb4\x00\x00\x00\x00\x00", 12) = 12 [pid 5021] futex(0x7fbb908ee37c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5021] futex(0x7fbb908ee378, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5015] <... futex resumed>) = 0 [ 153.592744][ T58] nci: nci_rf_discover_ntf_packet: unsupported rf_tech_and_mode 0xff [ 153.601986][ T58] ===================================================== [ 153.612589][ T58] BUG: KMSAN: uninit-value in nci_ntf_packet+0x2ac8/0x39c0 [ 153.620131][ T58] nci_ntf_packet+0x2ac8/0x39c0 [ 153.625167][ T58] nci_rx_work+0x213/0x500 [ 153.629949][ T58] process_scheduled_works+0xa81/0x1bd0 [ 153.635693][ T58] worker_thread+0xea5/0x1560 [ 153.640709][ T58] kthread+0x3e2/0x540 [ 153.644975][ T58] ret_from_fork+0x6d/0x90 [ 153.649787][ T58] ret_from_fork_asm+0x1a/0x30 [ 153.654761][ T58] [ 153.657367][ T58] Uninit was created at: [ 153.661875][ T58] kmem_cache_alloc_node+0x613/0xc50 [ 153.667445][ T58] kmalloc_reserve+0x13d/0x4a0 [ 153.672411][ T58] __alloc_skb+0x35b/0x7a0 [ 153.677067][ T58] virtual_ncidev_write+0x6d/0x290 [ 153.682481][ T58] vfs_write+0x49b/0x1520 [ 153.687146][ T58] ksys_write+0x20f/0x4c0 [ 153.691671][ T58] __x64_sys_write+0x93/0xe0 [ 153.696547][ T58] do_syscall_64+0xd5/0x1f0 [ 153.701245][ T58] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 153.707493][ T58] [ 153.709918][ T58] CPU: 1 PID: 58 Comm: kworker/u8:4 Not tainted 6.8.0-syzkaller-13213-g70293240c5ce #0 [ 153.719930][ T58] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 153.730215][ T58] Workqueue: nfc2_nci_rx_wq nci_rx_work [ 153.736085][ T58] ===================================================== [ 153.743132][ T58] Disabling lock debugging due to kernel taint [ 153.749576][ T58] Kernel panic - not syncing: kmsan.panic set ... [ 153.756118][ T58] CPU: 1 PID: 58 Comm: kworker/u8:4 Tainted: G B 6.8.0-syzkaller-13213-g70293240c5ce #0 [ 153.767452][ T58] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 153.777654][ T58] Workqueue: nfc2_nci_rx_wq nci_rx_work [ 153.783441][ T58] Call Trace: [ 153.786841][ T58] [pid 5015] exit_group(0) = ? [pid 5021] <... futex resumed>) = ? [pid 5021] +++ exited with 0 +++ [pid 5016] <... sendmsg resumed>) = ? [ 153.789885][ T58] dump_stack_lvl+0x216/0x2d0 [ 153.794856][ T58] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.800921][ T58] dump_stack+0x1e/0x30 [ 153.805265][ T58] panic+0x4e2/0xcd0 [ 153.809350][ T58] ? kmsan_get_metadata+0x51/0x1d0 [ 153.814660][ T58] kmsan_report+0x2d5/0x2e0 [ 153.819390][ T58] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 153.825695][ T58] ? __msan_warning+0x95/0x120 [ 153.830670][ T58] ? nci_ntf_packet+0x2ac8/0x39c0 [ 153.835871][ T58] ? nci_rx_work+0x213/0x500 [ 153.840669][ T58] ? process_scheduled_works+0xa81/0x1bd0 [ 153.846589][ T58] ? worker_thread+0xea5/0x1560 [ 153.851723][ T58] ? kthread+0x3e2/0x540 [ 153.856173][ T58] ? ret_from_fork+0x6d/0x90 [ 153.860941][ T58] ? ret_from_fork_asm+0x1a/0x30 [ 153.866094][ T58] ? vprintk_emit+0xae2/0xbc0 [ 153.871001][ T58] ? kmsan_get_metadata+0x146/0x1d0 [ 153.876392][ T58] ? vprintk_default+0x3e/0x50 [ 153.881382][ T58] ? vprintk+0xee/0xf0 [ 153.885597][ T58] ? _printk+0x157/0x190 [ 153.890039][ T58] ? kmsan_get_metadata+0x146/0x1d0 [ 153.895395][ T58] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 153.901382][ T58] __msan_warning+0x95/0x120 [ 153.906202][ T58] nci_ntf_packet+0x2ac8/0x39c0 [ 153.911214][ T58] ? kmsan_get_metadata+0x146/0x1d0 [ 153.916536][ T58] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 153.922991][ T58] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 153.929244][ T58] nci_rx_work+0x213/0x500 [ 153.933893][ T58] ? __pfx_nci_rx_work+0x10/0x10 [ 153.939025][ T58] process_scheduled_works+0xa81/0x1bd0 [ 153.944764][ T58] worker_thread+0xea5/0x1560 [ 153.949675][ T58] kthread+0x3e2/0x540 [ 153.953960][ T58] ? __pfx_worker_thread+0x10/0x10 [ 153.959288][ T58] ? __pfx_kthread+0x10/0x10 [ 153.964091][ T58] ret_from_fork+0x6d/0x90 [ 153.968663][ T58] ? __pfx_kthread+0x10/0x10 [ 153.973439][ T58] ret_from_fork_asm+0x1a/0x30 [ 153.978344][ T58] [ 153.981766][ T58] Kernel Offset: disabled [ 153.986149][ T58] Rebooting in 86400 seconds..