./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2400554372 <...> Warning: Permanently added '10.128.1.192' (ED25519) to the list of known hosts. execve("./syz-executor2400554372", ["./syz-executor2400554372"], 0x7ffc07369ef0 /* 10 vars */) = 0 brk(NULL) = 0x555558c30000 brk(0x555558c30d00) = 0x555558c30d00 arch_prctl(ARCH_SET_FS, 0x555558c30380) = 0 set_tid_address(0x555558c30650) = 5047 set_robust_list(0x555558c30660, 24) = 0 rseq(0x555558c30ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2400554372", 4096) = 28 getrandom("\x8a\xe3\x5d\x76\xa1\x3e\xb4\xd2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555558c30d00 brk(0x555558c51d00) = 0x555558c51d00 brk(0x555558c52000) = 0x555558c52000 mprotect(0x7fce16052000, 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=0x555558c30650) = 5048 ./strace-static-x86_64: Process 5048 attached [pid 5048] set_robust_list(0x555558c30660, 24) = 0 [pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5048] setpgid(0, 0) = 0 [pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5048] write(3, "1000", 4) = 4 executing program [pid 5048] close(3) = 0 [pid 5048] write(1, "executing program\n", 18) = 18 [pid 5048] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_LPM_TRIE, key_size=5, value_size=65537, max_entries=9, map_flags=BPF_F_NO_PREALLOC, inner_map_fd=-1, map_name="", map_ifindex=0, btf_fd=-1, btf_key_type_id=0, btf_value_type_id=0, btf_vmlinux_value_type_id=0, map_extra=0}, 72) = 3 [pid 5048] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=12, insns=0x20000740, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS, prog_btf_fd=-1, func_info_rec_size=0, func_info=NULL, func_info_cnt=0, line_info_rec_size=0, line_info=NULL, line_info_cnt=0, attach_btf_id=0, attach_prog_fd=0, fd_array=NULL}, 144) = 4 [pid 5048] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="ext4_sync_file_exit", prog_fd=4}}, 16) = 5 [pid 5048] openat(AT_FDCWD, "memory.events", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 6 [pid 5048] openat(AT_FDCWD, "memory.events", O_WRONLY|O_TRUNC|O_NONBLOCK|O_DSYNC|O_DIRECT|FASYNC|0x4) = 7 [ 180.753690][ T5048] ===================================================== [ 180.761189][ T5048] BUG: KMSAN: uninit-value in trie_delete_elem+0xc0/0xbe0 [ 180.768584][ T5048] trie_delete_elem+0xc0/0xbe0 [ 180.773739][ T5048] bpf_map_delete_elem+0x5c/0x80 [ 180.778990][ T5048] ___bpf_prog_run+0x13fe/0xe0f0 [ 180.784441][ T5048] __bpf_prog_run32+0xb2/0xe0 [ 180.789322][ T5048] bpf_trace_run2+0x116/0x300 [ 180.794277][ T5048] __bpf_trace_ext4_sync_file_exit+0x2c/0x40 [ 180.800502][ T5048] ext4_sync_file+0x121c/0x13a0 [ 180.807461][ T5048] vfs_fsync_range+0x20d/0x270 [ 180.812619][ T5048] iomap_dio_complete+0xb58/0xf00 [ 180.817906][ T5048] iomap_dio_rw+0x134/0x170 [ 180.822819][ T5048] ext4_file_write_iter+0x26ee/0x3450 [ 180.828431][ T5048] vfs_write+0xb31/0x14d0 [ 180.833286][ T5048] ksys_write+0x20f/0x4c0 [ 180.837865][ T5048] __x64_sys_write+0x93/0xe0 [ 180.842890][ T5048] x64_sys_call+0x3062/0x3b50 [ 180.847805][ T5048] do_syscall_64+0xcf/0x1e0 [ 180.852737][ T5048] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 180.858906][ T5048] [ 180.861455][ T5048] Local variable stack created at: [ 180.866694][ T5048] __bpf_prog_run32+0x43/0xe0 [ 180.871745][ T5048] bpf_trace_run2+0x116/0x300 [ 180.876594][ T5048] [ 180.878995][ T5048] CPU: 1 PID: 5048 Comm: syz-executor240 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 180.889320][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 180.899739][ T5048] ===================================================== [ 180.906984][ T5048] Disabling lock debugging due to kernel taint [ 180.913316][ T5048] Kernel panic - not syncing: kmsan.panic set ... [ 180.919863][ T5048] CPU: 1 PID: 5048 Comm: syz-executor240 Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 180.931622][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 180.941873][ T5048] Call Trace: [ 180.945271][ T5048] [ 180.948305][ T5048] dump_stack_lvl+0x216/0x2d0 [ 180.953272][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 180.959349][ T5048] dump_stack+0x1e/0x30 [ 180.963751][ T5048] panic+0x4e2/0xcd0 [ 180.967890][ T5048] ? kmsan_get_metadata+0xf1/0x1d0 [ 180.973306][ T5048] kmsan_report+0x2d5/0x2e0 [ 180.978037][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 180.983472][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 180.988892][ T5048] ? __msan_warning+0x95/0x120 [ 180.993853][ T5048] ? trie_delete_elem+0xc0/0xbe0 [ 180.999037][ T5048] ? bpf_map_delete_elem+0x5c/0x80 [ 181.004370][ T5048] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 181.009624][ T5048] ? __bpf_prog_run32+0xb2/0xe0 [ 181.014637][ T5048] ? bpf_trace_run2+0x116/0x300 [ 181.019609][ T5048] ? __bpf_trace_ext4_sync_file_exit+0x2c/0x40 [ 181.025930][ T5048] ? ext4_sync_file+0x121c/0x13a0 [ 181.031167][ T5048] ? vfs_fsync_range+0x20d/0x270 [ 181.036306][ T5048] ? iomap_dio_complete+0xb58/0xf00 [ 181.041648][ T5048] ? iomap_dio_rw+0x134/0x170 [ 181.046462][ T5048] ? ext4_file_write_iter+0x26ee/0x3450 [ 181.052128][ T5048] ? vfs_write+0xb31/0x14d0 [ 181.056850][ T5048] ? ksys_write+0x20f/0x4c0 [ 181.061503][ T5048] ? __x64_sys_write+0x93/0xe0 [ 181.066422][ T5048] ? x64_sys_call+0x3062/0x3b50 [ 181.071447][ T5048] ? do_syscall_64+0xcf/0x1e0 [ 181.076365][ T5048] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.082691][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.088029][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.093385][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.099426][ T5048] ? _raw_spin_lock_irqsave+0x35/0xc0 [ 181.105019][ T5048] ? filter_irq_stacks+0x164/0x1a0 [ 181.110302][ T5048] ? stack_depot_save_flags+0x2c/0x6e0 [ 181.115924][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.121345][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.126860][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.132284][ T5048] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 181.138328][ T5048] __msan_warning+0x95/0x120 [ 181.143094][ T5048] trie_delete_elem+0xc0/0xbe0 [ 181.148012][ T5048] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 181.154460][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.159860][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.165217][ T5048] ? __pfx_trie_delete_elem+0x10/0x10 [ 181.170768][ T5048] bpf_map_delete_elem+0x5c/0x80 [ 181.175962][ T5048] ___bpf_prog_run+0x13fe/0xe0f0 [ 181.181141][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.186593][ T5048] __bpf_prog_run32+0xb2/0xe0 [ 181.191528][ T5048] ? __pfx___bpf_prog_run32+0x10/0x10 [ 181.197228][ T5048] bpf_trace_run2+0x116/0x300 [ 181.202038][ T5048] ? kmsan_get_metadata+0x146/0x1d0 [ 181.207390][ T5048] __bpf_trace_ext4_sync_file_exit+0x2c/0x40 [ 181.213556][ T5048] ext4_sync_file+0x121c/0x13a0 [ 181.218657][ T5048] ? __pfx_ext4_sync_file+0x10/0x10 [ 181.224084][ T5048] vfs_fsync_range+0x20d/0x270 [ 181.229119][ T5048] iomap_dio_complete+0xb58/0xf00 [ 181.234472][ T5048] iomap_dio_rw+0x134/0x170 [ 181.239149][ T5048] ext4_file_write_iter+0x26ee/0x3450 [ 181.244782][ T5048] vfs_write+0xb31/0x14d0 [ 181.249313][ T5048] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 181.255235][ T5048] ksys_write+0x20f/0x4c0 [ 181.259731][ T5048] __x64_sys_write+0x93/0xe0 [ 181.264536][ T5048] x64_sys_call+0x3062/0x3b50 [ 181.269401][ T5048] do_syscall_64+0xcf/0x1e0 [ 181.274130][ T5048] ? clear_bhb_loop+0x25/0x80 [ 181.279077][ T5048] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 181.285229][ T5048] RIP: 0033:0x7fce15fdef39 [ 181.289765][ T5048] 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 [ 181.309553][ T5048] RSP: 002b:00007ffee4784fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 181.318215][ T5048] RAX: ffffffffffffffda RBX: 0073746e6576652e RCX: 00007fce15fdef39 [ 181.326385][ T5048] RDX: 000000000000f000 RSI: 0000000020000200 RDI: 0000000000000007 [ 181.334539][ T5048] RBP: 652e79726f6d656d R08: 00007ffee4784d77 R09: 0000000000000006 [ 181.342691][ T5048] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 [ 181.350787][ T5048] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 181.358959][ T5048] [ 181.362268][ T5048] Kernel Offset: disabled [ 181.366676][ T5048] Rebooting in 86400 seconds..