./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3478062883 <...> Warning: Permanently added '10.128.1.181' (ED25519) to the list of known hosts. execve("./syz-executor3478062883", ["./syz-executor3478062883"], 0x7ffe7adef5c0 /* 10 vars */) = 0 brk(NULL) = 0x55557fe31000 brk(0x55557fe31d00) = 0x55557fe31d00 arch_prctl(ARCH_SET_FS, 0x55557fe31380) = 0 set_tid_address(0x55557fe31650) = 5843 set_robust_list(0x55557fe31660, 24) = 0 rseq(0x55557fe31ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3478062883", 4096) = 28 getrandom("\x09\xfb\x54\xb9\x8a\x15\x7a\x81", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557fe31d00 brk(0x55557fe52d00) = 0x55557fe52d00 brk(0x55557fe53000) = 0x55557fe53000 mprotect(0x7f849da5c000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 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 5845 attached [pid 5845] set_robust_list(0x55557fe31660, 24) = 0 [pid 5843] <... clone resumed>, child_tidptr=0x55557fe31650) = 5845 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] setpgid(0, 0) = 0 [pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5845] write(3, "1000", 4) = 4 [pid 5845] close(3) = 0 [pid 5845] write(1, "executing program\n", 18executing program ) = 18 [pid 5845] memfd_create("syzkaller", 0) = 3 [pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8495400000 [pid 5845] 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"..., 1048576) = 1048576 [pid 5845] munmap(0x7f8495400000, 138412032) = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5845] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5845] close(3) = 0 [pid 5845] close(4) = 0 [pid 5845] mkdir("./file0", 0777) = 0 [pid 5845] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_LAZYTIME, "shortad,gid=forget,iocharset=default,adinicb,mode=00000000000000000000002,novrs,unhide,iocharset=mac"...) = 0 [pid 5845] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5845] chdir("./file0") = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5845] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4 [pid 5845] setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [ 90.796701][ T5845] loop0: detected capacity change from 0 to 2048 [ 90.825495][ T5845] UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) [ 90.869441][ T5845] ------------[ cut here ]------------ [ 90.875502][ T5845] WARNING: CPU: 0 PID: 5845 at fs/udf/inode.c:2081 __udf_add_aext+0x524/0x6d0 [ 90.884705][ T5845] Modules linked in: [ 90.888717][ T5845] CPU: 0 UID: 0 PID: 5845 Comm: syz-executor347 Not tainted 6.16.0-rc7-syzkaller-00114-g327579671a9b #0 PREEMPT(full) [ 90.901239][ T5845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 90.911385][ T5845] RIP: 0010:__udf_add_aext+0x524/0x6d0 [ 90.916945][ T5845] Code: 95 ed fe 49 8b 3e 4c 89 e6 e8 38 de 0f ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8e 9d db fd cc e8 5d 83 8b fe 90 <0f> 0b 90 e9 14 fc ff ff e8 4f 83 8b fe 90 0f 0b 90 e9 66 fd ff ff [ 90.936670][ T5845] RSP: 0018:ffffc9000397f248 EFLAGS: 00010293 [ 90.942793][ T5845] RAX: ffffffff8334a383 RBX: dffffc0000000000 RCX: ffff88807c620000 [ 90.950788][ T5845] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001e0 [ 90.958821][ T5845] RBP: 1ffff9200072fee5 R08: ffff88807c620000 R09: 0000000000000002 [ 90.966848][ T5845] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000001e0 [ 90.974923][ T5845] R13: 0000000000000000 R14: ffffc9000397f720 R15: ffffc9000397f728 [ 90.982980][ T5845] FS: 000055557fe31380(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000 [ 90.991991][ T5845] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.998602][ T5845] CR2: 00007f849da600f8 CR3: 0000000076865000 CR4: 0000000000350ef0 [ 91.006642][ T5845] Call Trace: [ 91.009945][ T5845] [ 91.012991][ T5845] udf_setup_indirect_aext+0x609/0x800 [ 91.018510][ T5845] ? __udf_add_aext+0x508/0x6d0 [ 91.023513][ T5845] udf_do_extend_file+0x870/0x1180 [ 91.028644][ T5845] ? udf_get_fileshortad+0x6e/0x1b0 [ 91.033931][ T5845] ? __pfx_udf_do_extend_file+0x10/0x10 [ 91.039515][ T5845] udf_map_block+0xf64/0x42a0 [ 91.044270][ T5845] ? stack_trace_save+0x9c/0xe0 [ 91.049161][ T5845] ? check_path+0x21/0x40 [ 91.053559][ T5845] ? __pfx_udf_map_block+0x10/0x10 [ 91.058724][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.064422][ T5845] ? validate_chain+0x897/0x2140 [ 91.069410][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.075126][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.080780][ T5845] ? do_raw_spin_lock+0x121/0x290 [ 91.085866][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.091569][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.097213][ T5845] ? do_raw_spin_unlock+0x122/0x240 [ 91.102483][ T5845] __udf_get_block+0x52/0x250 [ 91.107210][ T5845] ? create_empty_buffers+0x465/0x530 [ 91.112657][ T5845] __block_write_begin_int+0x6b5/0x1900 [ 91.118257][ T5845] ? folio_add_lru+0x1b2/0x3d0 [ 91.123151][ T5845] ? __pfx_udf_get_block+0x10/0x10 [ 91.128299][ T5845] ? __pfx___block_write_begin_int+0x10/0x10 [ 91.134358][ T5845] ? __pfx_udf_get_block+0x10/0x10 [ 91.139504][ T5845] block_write_begin+0x8a/0x120 [ 91.144415][ T5845] ? udf_write_begin+0x7d/0x260 [ 91.149304][ T5845] udf_write_begin+0x100/0x260 [ 91.155480][ T5845] generic_perform_write+0x2c7/0x910 [ 91.160799][ T5845] ? __pfx_generic_perform_write+0x10/0x10 [ 91.166666][ T5845] ? file_update_time+0x416/0x490 [ 91.171769][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.177442][ T5845] ? __generic_file_write_iter+0xf9/0x230 [ 91.183240][ T5845] ? udf_file_write_iter+0x2c4/0x6c0 [ 91.188586][ T5845] udf_file_write_iter+0x2d5/0x6c0 [ 91.193791][ T5845] vfs_write+0x54b/0xa90 [ 91.198092][ T5845] ? __pfx_udf_file_write_iter+0x10/0x10 [ 91.203835][ T5845] ? __pfx_vfs_write+0x10/0x10 [ 91.208662][ T5845] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.213947][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.219776][ T5845] ? _raw_spin_unlock_irq+0x2e/0x50 [ 91.225045][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.230706][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.236425][ T5845] __x64_sys_pwrite64+0x193/0x220 [ 91.241538][ T5845] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 91.247135][ T5845] ? rcu_is_watching+0x15/0xb0 [ 91.252076][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.257742][ T5845] do_syscall_64+0xfa/0x3b0 [ 91.262310][ T5845] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.267538][ T5845] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.273773][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.279804][ T5845] ? exc_page_fault+0x9f/0xf0 [ 91.284583][ T5845] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.290522][ T5845] RIP: 0033:0x7f849d9e7f99 [ 91.294991][ T5845] 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 [ 91.314727][ T5845] RSP: 002b:00007ffc5ad771d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 91.323226][ T5845] RAX: ffffffffffffffda RBX: 6573726168636f69 RCX: 00007f849d9e7f99 [ 91.331260][ T5845] RDX: 0000000000000001 RSI: 0000200000000300 RDI: 0000000000000004 [ 91.339258][ T5845] RBP: 00007f849da5c5f0 R08: 000055557fe324c0 R09: 000055557fe324c0 [ 91.347311][ T5845] R10: 0000010000000005 R11: 0000000000000246 R12: 00007ffc5ad77200 [ 91.355436][ T5845] R13: 00007ffc5ad77428 R14: 431bde82d7b634db R15: 00007f849da3103b [ 91.363523][ T5845] [ 91.366567][ T5845] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 91.373855][ T5845] CPU: 0 UID: 0 PID: 5845 Comm: syz-executor347 Not tainted 6.16.0-rc7-syzkaller-00114-g327579671a9b #0 PREEMPT(full) [ 91.386276][ T5845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 91.396340][ T5845] Call Trace: [ 91.399619][ T5845] [ 91.402551][ T5845] dump_stack_lvl+0x99/0x250 [ 91.407153][ T5845] ? __asan_memcpy+0x40/0x70 [ 91.411753][ T5845] ? __pfx_dump_stack_lvl+0x10/0x10 [ 91.416963][ T5845] ? __pfx__printk+0x10/0x10 [ 91.421572][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.427219][ T5845] panic+0x2db/0x790 [ 91.431131][ T5845] ? __pfx_panic+0x10/0x10 [ 91.435558][ T5845] ? show_trace_log_lvl+0x4fb/0x550 [ 91.440780][ T5845] __warn+0x31b/0x4b0 [ 91.444767][ T5845] ? __udf_add_aext+0x524/0x6d0 [ 91.449622][ T5845] ? __udf_add_aext+0x524/0x6d0 [ 91.454475][ T5845] report_bug+0x2be/0x4f0 [ 91.458810][ T5845] ? __udf_add_aext+0x524/0x6d0 [ 91.463662][ T5845] ? __udf_add_aext+0x524/0x6d0 [ 91.468605][ T5845] ? __udf_add_aext+0x526/0x6d0 [ 91.473457][ T5845] handle_bug+0x84/0x160 [ 91.477710][ T5845] exc_invalid_op+0x1a/0x50 [ 91.482223][ T5845] asm_exc_invalid_op+0x1a/0x20 [ 91.487073][ T5845] RIP: 0010:__udf_add_aext+0x524/0x6d0 [ 91.492543][ T5845] Code: 95 ed fe 49 8b 3e 4c 89 e6 e8 38 de 0f ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8e 9d db fd cc e8 5d 83 8b fe 90 <0f> 0b 90 e9 14 fc ff ff e8 4f 83 8b fe 90 0f 0b 90 e9 66 fd ff ff [ 91.512168][ T5845] RSP: 0018:ffffc9000397f248 EFLAGS: 00010293 [ 91.518250][ T5845] RAX: ffffffff8334a383 RBX: dffffc0000000000 RCX: ffff88807c620000 [ 91.526318][ T5845] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001e0 [ 91.534294][ T5845] RBP: 1ffff9200072fee5 R08: ffff88807c620000 R09: 0000000000000002 [ 91.542272][ T5845] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000001e0 [ 91.550249][ T5845] R13: 0000000000000000 R14: ffffc9000397f720 R15: ffffc9000397f728 [ 91.558242][ T5845] ? __udf_add_aext+0x523/0x6d0 [ 91.563120][ T5845] ? __udf_add_aext+0x523/0x6d0 [ 91.567983][ T5845] udf_setup_indirect_aext+0x609/0x800 [ 91.573457][ T5845] ? __udf_add_aext+0x508/0x6d0 [ 91.578316][ T5845] udf_do_extend_file+0x870/0x1180 [ 91.583432][ T5845] ? udf_get_fileshortad+0x6e/0x1b0 [ 91.588663][ T5845] ? __pfx_udf_do_extend_file+0x10/0x10 [ 91.594229][ T5845] udf_map_block+0xf64/0x42a0 [ 91.598940][ T5845] ? stack_trace_save+0x9c/0xe0 [ 91.603990][ T5845] ? check_path+0x21/0x40 [ 91.608341][ T5845] ? __pfx_udf_map_block+0x10/0x10 [ 91.613473][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.619209][ T5845] ? validate_chain+0x897/0x2140 [ 91.624210][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.629878][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.635535][ T5845] ? do_raw_spin_lock+0x121/0x290 [ 91.640585][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.646238][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.651882][ T5845] ? do_raw_spin_unlock+0x122/0x240 [ 91.657108][ T5845] __udf_get_block+0x52/0x250 [ 91.661801][ T5845] ? create_empty_buffers+0x465/0x530 [ 91.667185][ T5845] __block_write_begin_int+0x6b5/0x1900 [ 91.672748][ T5845] ? folio_add_lru+0x1b2/0x3d0 [ 91.677644][ T5845] ? __pfx_udf_get_block+0x10/0x10 [ 91.682778][ T5845] ? __pfx___block_write_begin_int+0x10/0x10 [ 91.688774][ T5845] ? __pfx_udf_get_block+0x10/0x10 [ 91.694164][ T5845] block_write_begin+0x8a/0x120 [ 91.699059][ T5845] ? udf_write_begin+0x7d/0x260 [ 91.704014][ T5845] udf_write_begin+0x100/0x260 [ 91.708796][ T5845] generic_perform_write+0x2c7/0x910 [ 91.714275][ T5845] ? __pfx_generic_perform_write+0x10/0x10 [ 91.720091][ T5845] ? file_update_time+0x416/0x490 [ 91.725125][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.730792][ T5845] ? __generic_file_write_iter+0xf9/0x230 [ 91.736552][ T5845] ? udf_file_write_iter+0x2c4/0x6c0 [ 91.741986][ T5845] udf_file_write_iter+0x2d5/0x6c0 [ 91.747127][ T5845] vfs_write+0x54b/0xa90 [ 91.751391][ T5845] ? __pfx_udf_file_write_iter+0x10/0x10 [ 91.757066][ T5845] ? __pfx_vfs_write+0x10/0x10 [ 91.761849][ T5845] ? _raw_spin_unlock_irq+0x23/0x50 [ 91.767080][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.772717][ T5845] ? _raw_spin_unlock_irq+0x2e/0x50 [ 91.777950][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.783618][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.789287][ T5845] __x64_sys_pwrite64+0x193/0x220 [ 91.794346][ T5845] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 91.799916][ T5845] ? rcu_is_watching+0x15/0xb0 [ 91.804700][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.810350][ T5845] do_syscall_64+0xfa/0x3b0 [ 91.814870][ T5845] ? lockdep_hardirqs_on+0x9c/0x150 [ 91.820075][ T5845] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.826153][ T5845] ? srso_alias_return_thunk+0x5/0xfbef5 [ 91.831800][ T5845] ? exc_page_fault+0x9f/0xf0 [ 91.836547][ T5845] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 91.842456][ T5845] RIP: 0033:0x7f849d9e7f99 [ 91.846890][ T5845] 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 [ 91.866510][ T5845] RSP: 002b:00007ffc5ad771d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 91.874952][ T5845] RAX: ffffffffffffffda RBX: 6573726168636f69 RCX: 00007f849d9e7f99 [ 91.882931][ T5845] RDX: 0000000000000001 RSI: 0000200000000300 RDI: 0000000000000004 [ 91.890908][ T5845] RBP: 00007f849da5c5f0 R08: 000055557fe324c0 R09: 000055557fe324c0 [ 91.898904][ T5845] R10: 0000010000000005 R11: 0000000000000246 R12: 00007ffc5ad77200 [ 91.906912][ T5845] R13: 00007ffc5ad77428 R14: 431bde82d7b634db R15: 00007f849da3103b [ 91.914914][ T5845] [ 91.918041][ T5845] Kernel Offset: disabled [ 91.922361][ T5845] Rebooting in 86400 seconds..