./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1349008966
<...>
Warning: Permanently added '10.128.1.214' (ED25519) to the list of known hosts.
execve("./syz-executor1349008966", ["./syz-executor1349008966"], 0x7ffccfe68c20 /* 10 vars */) = 0
brk(NULL) = 0x5555689ba000
brk(0x5555689bad00) = 0x5555689bad00
arch_prctl(ARCH_SET_FS, 0x5555689ba380) = 0
set_tid_address(0x5555689ba650) = 5838
set_robust_list(0x5555689ba660, 24) = 0
rseq(0x5555689baca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1349008966", 4096) = 28
getrandom("\x2c\x81\xaf\x90\xb9\xcc\x9e\x4b", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x5555689bad00
brk(0x5555689dbd00) = 0x5555689dbd00
brk(0x5555689dc000) = 0x5555689dc000
mprotect(0x7fc6ac70a000, 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
write(1, "executing program\n", 18executing program
) = 18
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6a4200000
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
munmap(0x7fc6a4200000, 138412032) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
close(4) = 0
mkdir("./file1", 0777) = 0
syzkaller login: [ 87.528282][ T5838] loop0: detected capacity change from 0 to 2048
mount("/dev/loop0", "./file1", "udf", MS_REC|MS_STRICTATIME, "") = 0
openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
chdir("./file1") = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
open("./file1", O_RDWR|O_CREAT|O_DIRECT|O_NOFOLLOW|O_NOATIME, 0551) = 4
[ 87.576602][ T5838] UDF-fs: error (device loop0): udf_process_sequence: Primary Volume Descriptor not found!
[ 87.591478][ T5838] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
[ 87.608755][ T30] audit: type=1800 audit(1752795162.582:2): pid=5838 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor134" name="file1" dev="loop0" ino=1346 res=0 errno=0
[ 87.619695][ T5838] ------------[ cut here ]------------
[ 87.634474][ T5838] WARNING: CPU: 0 PID: 5838 at fs/udf/truncate.c:224 udf_truncate_extents+0xd4c/0xec0
[ 87.644283][ T5838] Modules linked in:
[ 87.648366][ T5838] CPU: 0 UID: 0 PID: 5838 Comm: syz-executor134 Not tainted 6.16.0-rc6-syzkaller-00037-ge2291551827f #0 PREEMPT(full)
[ 87.660949][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 87.671173][ T5838] RIP: 0010:udf_truncate_extents+0xd4c/0xec0
[ 87.677234][ T5838] Code: 20 68 0f 48 3b 84 24 80 01 00 00 75 77 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0b f4 34 08 cc e8 c5 e8 8b fe 90 <0f> 0b 90 eb 88 44 89 e9 80 e1 07 38 c1 0f 8c e4 f3 ff ff 4c 89 ef
[ 87.697131][ T5838] RSP: 0018:ffffc90003eef7c0 EFLAGS: 00010293
[ 87.703252][ T5838] RAX: ffffffff83343f5b RBX: 1ffff1100ee961a0 RCX: ffff888034108000
[ 87.711331][ T5838] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000
[ 87.719386][ T5838] RBP: ffffc90003eef988 R08: ffff888034108000 R09: 0000000000000002
[ 87.727473][ T5838] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
[ 87.735476][ T5838] R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a
[ 87.743643][ T5838] FS: 00005555689ba380(0000) GS:ffff888125c5a000(0000) knlGS:0000000000000000
[ 87.752635][ T5838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 87.759275][ T5838] CR2: 000055768f5f1190 CR3: 000000003095e000 CR4: 00000000003526f0
[ 87.767304][ T5838] Call Trace:
[ 87.770582][ T5838]
[ 87.773515][ T5838] ? __pfx_udf_truncate_extents+0x10/0x10
[ 87.779320][ T5838] ? do_raw_spin_unlock+0x122/0x240
[ 87.784546][ T5838] udf_write_failed+0x185/0x1c0
[ 87.789445][ T5838] udf_direct_IO+0x1c6/0x200
[ 87.794054][ T5838] generic_file_direct_write+0x1d8/0x3e0
[ 87.799747][ T5838] ? file_update_time+0x416/0x490
[ 87.804796][ T5838] __generic_file_write_iter+0x11d/0x230
[ 87.810466][ T5838] ? udf_file_write_iter+0x2c4/0x6c0
[ 87.815768][ T5838] udf_file_write_iter+0x2d5/0x6c0
[ 87.821144][ T5838] do_iter_readv_writev+0x56e/0x7f0
[ 87.826349][ T5838] ? __pfx_do_iter_readv_writev+0x10/0x10
[ 87.832249][ T5838] ? rcu_read_lock_any_held+0xb3/0x120
[ 87.837798][ T5838] vfs_writev+0x31a/0x960
[ 87.842160][ T5838] ? __pfx_vfs_writev+0x10/0x10
[ 87.847105][ T5838] ? _raw_spin_lock_irq+0xae/0xf0
[ 87.852330][ T5838] ? _raw_spin_unlock_irq+0x2e/0x50
[ 87.857715][ T5838] __se_sys_pwritev2+0x179/0x290
[ 87.862946][ T5838] ? __pfx___se_sys_pwritev2+0x10/0x10
[ 87.868464][ T5838] ? rcu_is_watching+0x15/0xb0
[ 87.873254][ T5838] ? __x64_sys_pwritev2+0x20/0xc0
[ 87.878358][ T5838] do_syscall_64+0xfa/0x3b0
[ 87.882980][ T5838] ? lockdep_hardirqs_on+0x9c/0x150
[ 87.888262][ T5838] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.894462][ T5838] ? clear_bhb_loop+0x60/0xb0
[ 87.899225][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 87.905138][ T5838] RIP: 0033:0x7fc6ac696739
[ 87.909682][ T5838] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 87.930126][ T5838] RSP: 002b:00007fff43f0ad58 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
[ 87.938621][ T5838] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fc6ac696739
[ 87.946663][ T5838] RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
[ 87.954719][ T5838] RBP: 00007fc6ac70a610 R08: 0000000000000003 R09: 0000000000000001
[ 87.962735][ T5838] R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000001
[ 87.970816][ T5838] R13: 00007fff43f0af28 R14: 0000000000000001 R15: 0000000000000001
[ 87.978878][ T5838]
[ 87.981928][ T5838] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 87.989314][ T5838] CPU: 0 UID: 0 PID: 5838 Comm: syz-executor134 Not tainted 6.16.0-rc6-syzkaller-00037-ge2291551827f #0 PREEMPT(full)
[ 88.001816][ T5838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 88.012233][ T5838] Call Trace:
[ 88.016277][ T5838]
[ 88.019218][ T5838] dump_stack_lvl+0x99/0x250
[ 88.023832][ T5838] ? __asan_memcpy+0x40/0x70
[ 88.028448][ T5838] ? __pfx_dump_stack_lvl+0x10/0x10
[ 88.033742][ T5838] ? __pfx__printk+0x10/0x10
[ 88.038357][ T5838] panic+0x2db/0x790
[ 88.042266][ T5838] ? __pfx_panic+0x10/0x10
[ 88.046708][ T5838] ? show_trace_log_lvl+0x4fb/0x550
[ 88.051961][ T5838] __warn+0x31b/0x4b0
[ 88.055989][ T5838] ? udf_truncate_extents+0xd4c/0xec0
[ 88.061387][ T5838] ? udf_truncate_extents+0xd4c/0xec0
[ 88.066773][ T5838] report_bug+0x2be/0x4f0
[ 88.071139][ T5838] ? udf_truncate_extents+0xd4c/0xec0
[ 88.076526][ T5838] ? udf_truncate_extents+0xd4c/0xec0
[ 88.081923][ T5838] ? udf_truncate_extents+0xd4e/0xec0
[ 88.087315][ T5838] handle_bug+0x84/0x160
[ 88.091583][ T5838] exc_invalid_op+0x1a/0x50
[ 88.096210][ T5838] asm_exc_invalid_op+0x1a/0x20
[ 88.101072][ T5838] RIP: 0010:udf_truncate_extents+0xd4c/0xec0
[ 88.107070][ T5838] Code: 20 68 0f 48 3b 84 24 80 01 00 00 75 77 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0b f4 34 08 cc e8 c5 e8 8b fe 90 <0f> 0b 90 eb 88 44 89 e9 80 e1 07 38 c1 0f 8c e4 f3 ff ff 4c 89 ef
[ 88.126706][ T5838] RSP: 0018:ffffc90003eef7c0 EFLAGS: 00010293
[ 88.132802][ T5838] RAX: ffffffff83343f5b RBX: 1ffff1100ee961a0 RCX: ffff888034108000
[ 88.140790][ T5838] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000
[ 88.148767][ T5838] RBP: ffffc90003eef988 R08: ffff888034108000 R09: 0000000000000002
[ 88.156748][ T5838] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
[ 88.164843][ T5838] R13: 0000000000000000 R14: 000000000000000a R15: 000000000000000a
[ 88.172902][ T5838] ? udf_truncate_extents+0xd4b/0xec0
[ 88.178327][ T5838] ? __pfx_udf_truncate_extents+0x10/0x10
[ 88.184337][ T5838] ? do_raw_spin_unlock+0x122/0x240
[ 88.189572][ T5838] udf_write_failed+0x185/0x1c0
[ 88.194462][ T5838] udf_direct_IO+0x1c6/0x200
[ 88.199094][ T5838] generic_file_direct_write+0x1d8/0x3e0
[ 88.204756][ T5838] ? file_update_time+0x416/0x490
[ 88.209809][ T5838] __generic_file_write_iter+0x11d/0x230
[ 88.215458][ T5838] ? udf_file_write_iter+0x2c4/0x6c0
[ 88.220757][ T5838] udf_file_write_iter+0x2d5/0x6c0
[ 88.225906][ T5838] do_iter_readv_writev+0x56e/0x7f0
[ 88.231147][ T5838] ? __pfx_do_iter_readv_writev+0x10/0x10
[ 88.236881][ T5838] ? rcu_read_lock_any_held+0xb3/0x120
[ 88.242376][ T5838] vfs_writev+0x31a/0x960
[ 88.246729][ T5838] ? __pfx_vfs_writev+0x10/0x10
[ 88.251588][ T5838] ? _raw_spin_lock_irq+0xae/0xf0
[ 88.256643][ T5838] ? _raw_spin_unlock_irq+0x2e/0x50
[ 88.261873][ T5838] __se_sys_pwritev2+0x179/0x290
[ 88.266823][ T5838] ? __pfx___se_sys_pwritev2+0x10/0x10
[ 88.272283][ T5838] ? rcu_is_watching+0x15/0xb0
[ 88.277059][ T5838] ? __x64_sys_pwritev2+0x20/0xc0
[ 88.282183][ T5838] do_syscall_64+0xfa/0x3b0
[ 88.286781][ T5838] ? lockdep_hardirqs_on+0x9c/0x150
[ 88.291989][ T5838] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 88.298153][ T5838] ? clear_bhb_loop+0x60/0xb0
[ 88.302845][ T5838] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 88.308745][ T5838] RIP: 0033:0x7fc6ac696739
[ 88.313172][ T5838] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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
[ 88.332788][ T5838] RSP: 002b:00007fff43f0ad58 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
[ 88.341219][ T5838] RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007fc6ac696739
[ 88.349200][ T5838] RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
[ 88.357193][ T5838] RBP: 00007fc6ac70a610 R08: 0000000000000003 R09: 0000000000000001
[ 88.365200][ T5838] R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000001
[ 88.373191][ T5838] R13: 00007fff43f0af28 R14: 0000000000000001 R15: 0000000000000001
[ 88.381187][ T5838]
[ 88.384518][ T5838] Kernel Offset: disabled
[ 88.388852][ T5838] Rebooting in 86400 seconds..