./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2535978622 <...> Warning: Permanently added '10.128.1.114' (ED25519) to the list of known hosts. execve("./syz-executor2535978622", ["./syz-executor2535978622"], 0x7ffe9bcf84c0 /* 10 vars */) = 0 brk(NULL) = 0x55557e74d000 brk(0x55557e74dd00) = 0x55557e74dd00 arch_prctl(ARCH_SET_FS, 0x55557e74d380) = 0 set_tid_address(0x55557e74d650) = 5019 set_robust_list(0x55557e74d660, 24) = 0 rseq(0x55557e74dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2535978622", 4096) = 28 getrandom("\xca\xcd\x8e\x2e\xf7\x88\x65\x36", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557e74dd00 brk(0x55557e76ed00) = 0x55557e76ed00 brk(0x55557e76f000) = 0x55557e76f000 mprotect(0x7f0600c4f000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5020 attached [pid 5020] set_robust_list(0x55557e74d660, 24 [pid 5019] <... clone resumed>, child_tidptr=0x55557e74d650) = 5020 [pid 5020] <... set_robust_list resumed>) = 0 [pid 5020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5020] setpgid(0, 0) = 0 [pid 5020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5020] write(3, "1000", 4) = 4 [pid 5020] close(3) = 0 [pid 5020] memfd_create("syzkaller", 0) = 3 [pid 5020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f05f8600000 [pid 5020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 5020] munmap(0x7f05f8600000, 138412032) = 0 [pid 5020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5020] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5020] close(3) = 0 [pid 5020] close(4) = 0 [pid 5020] mkdir("./bus", 0777) = 0 [ 188.115796][ T5020] loop0: detected capacity change from 0 to 512 [ 188.168026][ T5020] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! [ 188.182865][ T5020] EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode [pid 5020] mount("/dev/loop0", "./bus", "ext4", MS_DIRSYNC|MS_I_VERSION, "init_itable,journal_ioprio=0x0000000000000001,stripe=0x0000000000000000,,errors=continue") = 0 [pid 5020] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5020] chdir("./bus") = 0 [pid 5020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5020] openat(AT_FDCWD, "./file0", O_RDONLY) = 4 [ 188.211407][ T5020] EXT4-fs (loop0): 1 truncate cleaned up [ 188.217666][ T5020] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 188.248884][ T5020] EXT4-fs warning (device loop0): __ext4fs_dirhash:270: inode #12: comm syz-executor253: Siphash requires key [ 188.261318][ T5020] ===================================================== [ 188.269056][ T5020] BUG: KMSAN: uninit-value in ext4_inlinedir_to_tree+0xde2/0x15a0 [ 188.277383][ T5020] ext4_inlinedir_to_tree+0xde2/0x15a0 [ 188.283659][ T5020] ext4_htree_fill_tree+0x1941/0x1cd0 [ 188.289319][ T5020] ext4_readdir+0x4bbf/0x5b00 [ 188.294675][ T5020] iterate_dir+0x688/0x870 [ 188.299476][ T5020] __se_sys_getdents64+0x169/0x530 [ 188.305004][ T5020] __x64_sys_getdents64+0x96/0xe0 [ 188.310309][ T5020] x64_sys_call+0x343d/0x3b50 [ 188.315489][ T5020] do_syscall_64+0xcf/0x1e0 [ 188.320297][ T5020] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 188.326790][ T5020] [ 188.329266][ T5020] Local variable hinfo created at: [ 188.334858][ T5020] ext4_htree_fill_tree+0x52/0x1cd0 [ 188.340288][ T5020] ext4_readdir+0x4bbf/0x5b00 [ 188.345522][ T5020] [ 188.347980][ T5020] CPU: 1 PID: 5020 Comm: syz-executor253 Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0 [ 188.358863][ T5020] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 188.369264][ T5020] ===================================================== [ 188.376472][ T5020] Disabling lock debugging due to kernel taint [ 188.382770][ T5020] Kernel panic - not syncing: kmsan.panic set ... [ 188.389319][ T5020] CPU: 1 PID: 5020 Comm: syz-executor253 Tainted: G B 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0 [ 188.401486][ T5020] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 188.411760][ T5020] Call Trace: [ 188.415207][ T5020] [ 188.418272][ T5020] dump_stack_lvl+0x216/0x2d0 [ 188.423124][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.429161][ T5020] dump_stack+0x1e/0x30 [ 188.433559][ T5020] panic+0x4e2/0xcd0 [ 188.437662][ T5020] ? kmsan_get_metadata+0x101/0x1d0 [ 188.443137][ T5020] kmsan_report+0x2d5/0x2e0 [ 188.447874][ T5020] ? __msan_warning+0x95/0x120 [ 188.452932][ T5020] ? ext4_inlinedir_to_tree+0xde2/0x15a0 [ 188.458828][ T5020] ? ext4_htree_fill_tree+0x1941/0x1cd0 [ 188.464552][ T5020] ? ext4_readdir+0x4bbf/0x5b00 [ 188.469696][ T5020] ? iterate_dir+0x688/0x870 [ 188.474562][ T5020] ? __se_sys_getdents64+0x169/0x530 [ 188.480275][ T5020] ? __x64_sys_getdents64+0x96/0xe0 [ 188.485892][ T5020] ? x64_sys_call+0x343d/0x3b50 [ 188.491044][ T5020] ? do_syscall_64+0xcf/0x1e0 [ 188.496189][ T5020] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 188.502540][ T5020] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 188.508583][ T5020] ? stack_depot_save_flags+0x66d/0x6e0 [ 188.514491][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.520127][ T5020] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 188.526705][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.532114][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.537564][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.543665][ T5020] __msan_warning+0x95/0x120 [ 188.548630][ T5020] ext4_inlinedir_to_tree+0xde2/0x15a0 [ 188.554284][ T5020] ? cpudl_heapify+0xa6e/0xca0 [ 188.559227][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.564604][ T5020] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 188.571175][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.576640][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.582822][ T5020] ext4_htree_fill_tree+0x1941/0x1cd0 [ 188.588406][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.593858][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.599352][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.604820][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.610903][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.617662][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.623742][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.629188][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.635205][ T5020] ext4_readdir+0x4bbf/0x5b00 [ 188.640161][ T5020] ? aa_file_perm+0x3e4/0x17a0 [ 188.645171][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.651176][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.656650][ T5020] ? kmsan_get_metadata+0x146/0x1d0 [ 188.662096][ T5020] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 188.668601][ T5020] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 188.674728][ T5020] ? __pfx_ext4_readdir+0x10/0x10 [ 188.680076][ T5020] iterate_dir+0x688/0x870 [ 188.684816][ T5020] __se_sys_getdents64+0x169/0x530 [ 188.690242][ T5020] ? __pfx_filldir64+0x10/0x10 [ 188.695350][ T5020] __x64_sys_getdents64+0x96/0xe0 [ 188.700691][ T5020] x64_sys_call+0x343d/0x3b50 [ 188.705656][ T5020] do_syscall_64+0xcf/0x1e0 [ 188.710439][ T5020] ? clear_bhb_loop+0x25/0x80 [ 188.715332][ T5020] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 188.721422][ T5020] RIP: 0033:0x7f0600bdad99 [ 188.726045][ T5020] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 188.746022][ T5020] RSP: 002b:00007ffdc23b8248 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 [ 188.754679][ T5020] RAX: ffffffffffffffda RBX: 00007f0600c24082 RCX: 00007f0600bdad99 [ 188.762875][ T5020] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 188.771047][ T5020] RBP: 00007f0600c4f5f0 R08: 000055557e74e4c0 R09: 000055557e74e4c0 [ 188.779211][ T5020] R10: 00007ffdc23b8110 R11: 0000000000000246 R12: 00007ffdc23b8270 [ 188.787413][ T5020] R13: 00007ffdc23b8498 R14: 431bde82d7b634db R15: 00007f0600c2403b [ 188.795609][ T5020] [ 188.799094][ T5020] Kernel Offset: disabled [ 188.803560][ T5020] Rebooting in 86400 seconds..