./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3085066369 <...> Warning: Permanently added '10.128.0.182' (ED25519) to the list of known hosts. execve("./syz-executor3085066369", ["./syz-executor3085066369"], 0x7ffd7fa2b940 /* 10 vars */) = 0 brk(NULL) = 0x555581378000 brk(0x555581378d00) = 0x555581378d00 arch_prctl(ARCH_SET_FS, 0x555581378380) = 0 set_tid_address(0x555581378650) = 5015 set_robust_list(0x555581378660, 24) = 0 rseq(0x555581378ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3085066369", 4096) = 28 getrandom("\xcd\x92\x4f\xef\xf9\xb6\x8b\x3c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581378d00 brk(0x555581399d00) = 0x555581399d00 brk(0x55558139a000) = 0x55558139a000 mprotect(0x7ff465b85000, 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=0x555581378650) = 5016 ./strace-static-x86_64: Process 5016 attached [pid 5016] set_robust_list(0x555581378660, 24) = 0 [pid 5016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5016] setpgid(0, 0) = 0 [pid 5016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5016] write(3, "1000", 4) = 4 [pid 5016] close(3) = 0 [pid 5016] bpf(BPF_MAP_CREATE, {map_type=BPF_MAP_TYPE_ARRAY, key_size=4, value_size=3, max_entries=5, map_flags=0, 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 5016] bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_RAW_TRACEPOINT, insn_cnt=12, insns=0x20000440, 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 5016] bpf(BPF_RAW_TRACEPOINT_OPEN, {raw_tracepoint={name="ext4_es_insert_delayed_block", prog_fd=4}}, 16) = 5 [pid 5016] openat(AT_FDCWD, "memory.events", O_WRONLY|O_CREAT|O_EXCL|O_TRUNC|O_APPEND|FASYNC|0x20, 000) = 6 [pid 5016] openat(AT_FDCWD, "memory.events", O_RDWR|__O_SYNC) = 7 [ 152.162203][ T5016] ===================================================== [ 152.169406][ T5016] BUG: KMSAN: uninit-value in array_map_lookup_elem+0x14d/0x170 [ 152.177430][ T5016] array_map_lookup_elem+0x14d/0x170 [ 152.183091][ T5016] bpf_map_lookup_elem+0x5c/0x80 [ 152.188150][ T5016] ___bpf_prog_run+0x13fe/0xe0f0 [ 152.193407][ T5016] __bpf_prog_run64+0xb5/0xe0 [ 152.198274][ T5016] bpf_trace_run3+0x132/0x320 [ 152.203311][ T5016] __bpf_trace_ext4_es_insert_delayed_block+0x34/0x50 [ 152.210296][ T5016] ext4_es_insert_delayed_block+0x11e1/0x1290 [ 152.216630][ T5016] ext4_da_get_block_prep+0x1714/0x1d30 [ 152.223030][ T5016] ext4_block_write_begin+0x749/0x1df0 [ 152.228721][ T5016] ext4_da_write_begin+0x889/0xec0 [ 152.234119][ T5016] generic_perform_write+0x400/0xc60 [ 152.239629][ T5016] ext4_buffered_write_iter+0x564/0xaa0 [ 152.245572][ T5016] ext4_file_write_iter+0x208/0x3450 [ 152.251162][ T5016] vfs_write+0xb63/0x1520 [ 152.255689][ T5016] ksys_write+0x20f/0x4c0 [ 152.260207][ T5016] __x64_sys_write+0x93/0xe0 [ 152.265150][ T5016] do_syscall_64+0xd5/0x1f0 [ 152.269876][ T5016] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 152.276071][ T5016] [ 152.278497][ T5016] Local variable stack created at: [ 152.283868][ T5016] __bpf_prog_run64+0x45/0xe0 [ 152.288726][ T5016] bpf_trace_run3+0x132/0x320 [ 152.293825][ T5016] [ 152.296254][ T5016] CPU: 0 PID: 5016 Comm: syz-executor308 Not tainted 6.8.0-syzkaller-11409-gf6cef5f8c37f #0 [ 152.306645][ T5016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 152.316948][ T5016] ===================================================== [ 152.324184][ T5016] Disabling lock debugging due to kernel taint [ 152.330436][ T5016] Kernel panic - not syncing: kmsan.panic set ... [ 152.336951][ T5016] CPU: 0 PID: 5016 Comm: syz-executor308 Tainted: G B 6.8.0-syzkaller-11409-gf6cef5f8c37f #0 [ 152.348671][ T5016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 152.358838][ T5016] Call Trace: [ 152.362252][ T5016] [ 152.365292][ T5016] dump_stack_lvl+0x216/0x2d0 [ 152.370185][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.376220][ T5016] dump_stack+0x1e/0x30 [ 152.380502][ T5016] panic+0x4e2/0xcd0 [ 152.384544][ T5016] ? kmsan_get_metadata+0x71/0x1d0 [ 152.389830][ T5016] kmsan_report+0x2d5/0x2e0 [ 152.394469][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.400502][ T5016] ? __msan_warning+0x95/0x120 [ 152.405454][ T5016] ? array_map_lookup_elem+0x14d/0x170 [ 152.411072][ T5016] ? bpf_map_lookup_elem+0x5c/0x80 [ 152.416392][ T5016] ? ___bpf_prog_run+0x13fe/0xe0f0 [ 152.421639][ T5016] ? __bpf_prog_run64+0xb5/0xe0 [ 152.426625][ T5016] ? bpf_trace_run3+0x132/0x320 [ 152.431659][ T5016] ? __bpf_trace_ext4_es_insert_delayed_block+0x34/0x50 [ 152.438812][ T5016] ? ext4_es_insert_delayed_block+0x11e1/0x1290 [ 152.445275][ T5016] ? ext4_da_get_block_prep+0x1714/0x1d30 [ 152.451194][ T5016] ? ext4_block_write_begin+0x749/0x1df0 [ 152.457011][ T5016] ? ext4_da_write_begin+0x889/0xec0 [ 152.462457][ T5016] ? generic_perform_write+0x400/0xc60 [ 152.468259][ T5016] ? ext4_buffered_write_iter+0x564/0xaa0 [ 152.474222][ T5016] ? ext4_file_write_iter+0x208/0x3450 [ 152.479843][ T5016] ? vfs_write+0xb63/0x1520 [ 152.484559][ T5016] ? ksys_write+0x20f/0x4c0 [ 152.489273][ T5016] ? __x64_sys_write+0x93/0xe0 [ 152.494160][ T5016] ? do_syscall_64+0xd5/0x1f0 [ 152.498949][ T5016] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 152.505135][ T5016] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 152.511542][ T5016] ? kmsan_internal_poison_memory+0x7d/0x90 [ 152.517661][ T5016] ? kmsan_internal_poison_memory+0x49/0x90 [ 152.523771][ T5016] ? kmsan_slab_free+0xd6/0x140 [ 152.528802][ T5016] ? kfree+0x20c/0xa30 [ 152.533050][ T5016] ? ext4_ext_map_blocks+0x6f5f/0xa000 [ 152.538645][ T5016] ? ext4_da_get_block_prep+0x8cc/0x1d30 [ 152.544468][ T5016] ? ext4_block_write_begin+0x749/0x1df0 [ 152.550282][ T5016] ? ext4_da_write_begin+0x889/0xec0 [ 152.555679][ T5016] ? generic_perform_write+0x400/0xc60 [ 152.561306][ T5016] ? ext4_buffered_write_iter+0x564/0xaa0 [ 152.567248][ T5016] ? ext4_file_write_iter+0x208/0x3450 [ 152.572933][ T5016] ? vfs_write+0xb63/0x1520 [ 152.577641][ T5016] ? ksys_write+0x20f/0x4c0 [ 152.582325][ T5016] ? __x64_sys_write+0x93/0xe0 [ 152.587283][ T5016] ? do_syscall_64+0xd5/0x1f0 [ 152.592074][ T5016] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 152.598297][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.603719][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.609711][ T5016] ? kfree+0x18c/0xa30 [ 152.613999][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.619690][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.625701][ T5016] __msan_warning+0x95/0x120 [ 152.630523][ T5016] array_map_lookup_elem+0x14d/0x170 [ 152.635985][ T5016] ? __pfx_array_map_lookup_elem+0x10/0x10 [ 152.642013][ T5016] bpf_map_lookup_elem+0x5c/0x80 [ 152.647138][ T5016] ___bpf_prog_run+0x13fe/0xe0f0 [ 152.652197][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.657657][ T5016] __bpf_prog_run64+0xb5/0xe0 [ 152.662533][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.668516][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.674550][ T5016] ? __pfx___bpf_prog_run64+0x10/0x10 [ 152.680095][ T5016] ? __pfx___bpf_prog_run64+0x10/0x10 [ 152.685645][ T5016] bpf_trace_run3+0x132/0x320 [ 152.690459][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.695888][ T5016] __bpf_trace_ext4_es_insert_delayed_block+0x34/0x50 [ 152.702864][ T5016] ext4_es_insert_delayed_block+0x11e1/0x1290 [ 152.709085][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.714494][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.720485][ T5016] ? _raw_spin_unlock+0x30/0x50 [ 152.725538][ T5016] ? ext4_da_reserve_space+0x2e9/0x4c0 [ 152.731429][ T5016] ext4_da_get_block_prep+0x1714/0x1d30 [ 152.737183][ T5016] ext4_block_write_begin+0x749/0x1df0 [ 152.742864][ T5016] ? __pfx_ext4_da_get_block_prep+0x10/0x10 [ 152.748951][ T5016] ? folio_wait_stable+0xa1/0xe0 [ 152.754109][ T5016] ext4_da_write_begin+0x889/0xec0 [ 152.759426][ T5016] ? __pfx_ext4_da_write_begin+0x10/0x10 [ 152.765198][ T5016] generic_perform_write+0x400/0xc60 [ 152.770718][ T5016] ext4_buffered_write_iter+0x564/0xaa0 [ 152.776430][ T5016] ? __schedule+0x22df/0x6b70 [ 152.781341][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.786791][ T5016] ext4_file_write_iter+0x208/0x3450 [ 152.792234][ T5016] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 152.798238][ T5016] ? vfs_write+0x553/0x1520 [ 152.802881][ T5016] ? filter_irq_stacks+0x60/0x1a0 [ 152.808048][ T5016] ? stack_depot_save_flags+0x2c/0x6e0 [ 152.813713][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.819152][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.824515][ T5016] ? kmsan_get_metadata+0x146/0x1d0 [ 152.829928][ T5016] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 152.835981][ T5016] vfs_write+0xb63/0x1520 [ 152.840731][ T5016] ksys_write+0x20f/0x4c0 [ 152.845289][ T5016] __x64_sys_write+0x93/0xe0 [ 152.850096][ T5016] do_syscall_64+0xd5/0x1f0 [ 152.854773][ T5016] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 152.860823][ T5016] RIP: 0033:0x7ff465b11cb9 [ 152.865386][ T5016] 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 [ 152.885211][ T5016] RSP: 002b:00007fff19014e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 152.893774][ T5016] RAX: ffffffffffffffda RBX: 0073746e6576652e RCX: 00007ff465b11cb9 [ 152.901879][ T5016] RDX: 0000000000002000 RSI: 0000000020000180 RDI: 0000000000000007 [ 152.909987][ T5016] RBP: 652e79726f6d656d R08: 0000000000000006 R09: 0000000000000006 [ 152.918084][ T5016] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 [ 152.926189][ T5016] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 152.934298][ T5016] [ 152.937768][ T5016] Kernel Offset: disabled [ 152.942180][ T5016] Rebooting in 86400 seconds..