./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4258955001 <...> Warning: Permanently added '10.128.0.192' (ED25519) to the list of known hosts. execve("./syz-executor4258955001", ["./syz-executor4258955001"], 0x7ffe23a78360 /* 10 vars */) = 0 brk(NULL) = 0x5555561e2000 brk(0x5555561e2e00) = 0x5555561e2e00 arch_prctl(ARCH_SET_FS, 0x5555561e2480) = 0 set_tid_address(0x5555561e2750) = 5020 set_robust_list(0x5555561e2760, 24) = 0 rseq(0x5555561e2da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4258955001", 4096) = 28 getrandom("\x22\x20\xd7\x49\x58\x8f\xb4\xe4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555561e2e00 brk(0x555556203e00) = 0x555556203e00 brk(0x555556204000) = 0x555556204000 mprotect(0x7f4d9e85b000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f4d9e7b68e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4d9e7be380}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f4d9e7b68e0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4d9e7be380}, NULL, 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561e2750) = 5021 ./strace-static-x86_64: Process 5021 attached [pid 5021] set_robust_list(0x5555561e2760, 24) = 0 [pid 5021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5021] setpgid(0, 0) = 0 [pid 5021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5021] write(3, "1000", 4) = 4 [pid 5021] close(3) = 0 [pid 5021] io_uring_setup(15246, {flags=0, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=16384, cq_entries=32768, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=524352}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 3 [pid 5021] mmap(NULL, 589888, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f4d9e71c000 [pid 5021] mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f4d9e61c000 [pid 5021] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5021] io_uring_setup(28476, {flags=IORING_SETUP_SUBMIT_ALL|IORING_SETUP_COOP_TASKRUN|0x10000, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 4 [pid 5021] mmap(NULL, 1048640, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 4, 0) = 0x7f4d9e51b000 [pid 5021] mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 4, 0x10000000) = 0x7f4d9e31b000 [pid 5021] io_uring_setup(268444325, {flags=IORING_SETUP_CLAMP, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=1048640}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 5 [pid 5021] mmap(NULL, 1179712, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 5, 0) = 0x7f4d9e1fa000 [pid 5021] mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 5, 0x10000000) = 0x7f4d9dffa000 [pid 5021] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x7f4d9e7ad000} --- [ 169.008607][ T5021] ===================================================== [ 169.016100][ T5021] BUG: KMSAN: uninit-value in io_sendrecv_fail+0x91/0x1e0 [ 169.023625][ T5021] io_sendrecv_fail+0x91/0x1e0 [ 169.028723][ T5021] io_req_defer_failed+0x3bd/0x610 [ 169.034361][ T5021] io_queue_sqe_fallback+0x1e3/0x280 [ 169.039920][ T5021] io_submit_fail_init+0x4e1/0x790 [ 169.045623][ T5021] io_submit_sqes+0x19cd/0x2fb0 [ 169.050837][ T5021] __se_sys_io_uring_enter+0x409/0x43e0 [ 169.056752][ T5021] __x64_sys_io_uring_enter+0x11b/0x1a0 [ 169.062703][ T5021] do_syscall_64+0xcf/0x1e0 [ 169.067508][ T5021] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 169.074137][ T5021] [ 169.076619][ T5021] Uninit was created at: [ 169.081758][ T5021] __alloc_pages+0x9a6/0xe00 [ 169.086612][ T5021] new_slab+0x2d7/0x1400 [ 169.091462][ T5021] ___slab_alloc+0x16b5/0x3970 [ 169.096568][ T5021] kmem_cache_alloc_bulk+0x52a/0x1440 [ 169.102601][ T5021] __io_alloc_req_refill+0x248/0x780 [ 169.108277][ T5021] io_submit_sqes+0xaa1/0x2fb0 [ 169.113446][ T5021] __se_sys_io_uring_enter+0x409/0x43e0 [ 169.119270][ T5021] __x64_sys_io_uring_enter+0x11b/0x1a0 [ 169.125249][ T5021] do_syscall_64+0xcf/0x1e0 [ 169.130053][ T5021] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 169.136494][ T5021] [ 169.138973][ T5021] CPU: 1 PID: 5021 Comm: syz-executor425 Not tainted 6.8.0-syzkaller-00648-g8ede842f669b #0 [ 169.149670][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 169.159984][ T5021] ===================================================== [ 169.167432][ T5021] Disabling lock debugging due to kernel taint [ 169.174128][ T5021] Kernel panic - not syncing: kmsan.panic set ... [ 169.180853][ T5021] CPU: 1 PID: 5021 Comm: syz-executor425 Tainted: G B 6.8.0-syzkaller-00648-g8ede842f669b #0 [ 169.192698][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 169.202898][ T5021] Call Trace: [ 169.206294][ T5021] [ 169.209387][ T5021] dump_stack_lvl+0x1bf/0x240 [ 169.214424][ T5021] dump_stack+0x1e/0x20 [ 169.219015][ T5021] panic+0x4de/0xc90 [ 169.223168][ T5021] kmsan_report+0x2d0/0x2d0 [ 169.227938][ T5021] ? stack_depot_save_flags+0x2c/0x6e0 [ 169.233679][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.239171][ T5021] ? __msan_warning+0x96/0x120 [ 169.244208][ T5021] ? io_sendrecv_fail+0x91/0x1e0 [ 169.249466][ T5021] ? io_req_defer_failed+0x3bd/0x610 [ 169.255011][ T5021] ? io_queue_sqe_fallback+0x1e3/0x280 [ 169.260847][ T5021] ? io_submit_fail_init+0x4e1/0x790 [ 169.266396][ T5021] ? io_submit_sqes+0x19cd/0x2fb0 [ 169.271676][ T5021] ? __se_sys_io_uring_enter+0x409/0x43e0 [ 169.277688][ T5021] ? __x64_sys_io_uring_enter+0x11b/0x1a0 [ 169.283694][ T5021] ? do_syscall_64+0xcf/0x1e0 [ 169.288643][ T5021] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 169.294999][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.300404][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.305909][ T5021] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 169.312484][ T5021] ? kmem_cache_alloc_bulk+0x5d2/0x1440 [ 169.318367][ T5021] ? filter_irq_stacks+0x60/0x1a0 [ 169.323773][ T5021] ? stack_depot_save_flags+0x2c/0x6e0 [ 169.329557][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.335039][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.340415][ T5021] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 169.346923][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.352395][ T5021] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 169.358474][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.363857][ T5021] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 169.369867][ T5021] __msan_warning+0x96/0x120 [ 169.374760][ T5021] io_sendrecv_fail+0x91/0x1e0 [ 169.379750][ T5021] ? io_req_defer_failed+0x3b7/0x610 [ 169.385338][ T5021] ? io_sendmsg_zc+0x1220/0x1220 [ 169.390475][ T5021] io_req_defer_failed+0x3bd/0x610 [ 169.395796][ T5021] io_queue_sqe_fallback+0x1e3/0x280 [ 169.401326][ T5021] io_submit_fail_init+0x4e1/0x790 [ 169.406706][ T5021] io_submit_sqes+0x19cd/0x2fb0 [ 169.411900][ T5021] __se_sys_io_uring_enter+0x409/0x43e0 [ 169.417760][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.423242][ T5021] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 169.429519][ T5021] ? _raw_spin_unlock_irq+0x31/0x50 [ 169.435297][ T5021] ? ptrace_notify+0x262/0x310 [ 169.440309][ T5021] ? kmsan_get_metadata+0x146/0x1c0 [ 169.445770][ T5021] __x64_sys_io_uring_enter+0x11b/0x1a0 [ 169.451534][ T5021] do_syscall_64+0xcf/0x1e0 [ 169.456326][ T5021] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 169.462431][ T5021] RIP: 0033:0x7f4d9e7e85f9 [ 169.467024][ T5021] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 [ 169.486850][ T5021] RSP: 002b:00007ffed8654678 EFLAGS: 00000216 ORIG_RAX: 00000000000001aa [ 169.495526][ T5021] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4d9e7e85f9 [ 169.503720][ T5021] RDX: 0000000000000000 RSI: 0000000000000d6d RDI: 0000000000000004 [ 169.511838][ T5021] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 169.519949][ T5021] R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000001 [ 169.528093][ T5021] R13: 431bde82d7b634db R14: 00007ffed86546d0 R15: 0000000000000001 [ 169.536255][ T5021] [ 169.539757][ T5021] Kernel Offset: disabled [ 169.544199][ T5021] Rebooting in 86400 seconds..