./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3972237962 <...> Warning: Permanently added '10.128.0.160' (ED25519) to the list of known hosts. execve("./syz-executor3972237962", ["./syz-executor3972237962"], 0x7ffdf7982750 /* 10 vars */) = 0 brk(NULL) = 0x5555900e7000 brk(0x5555900e7d00) = 0x5555900e7d00 arch_prctl(ARCH_SET_FS, 0x5555900e7380) = 0 set_tid_address(0x5555900e7650) = 5827 set_robust_list(0x5555900e7660, 24) = 0 rseq(0x5555900e7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3972237962", 4096) = 28 getrandom("\x0c\x0d\x2f\xff\x1d\x3c\xd8\x52", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555900e7d00 brk(0x555590108d00) = 0x555590108d00 brk(0x555590109000) = 0x555590109000 mprotect(0x7f5ea0af9000, 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 5828 attached [pid 5828] set_robust_list(0x5555900e7660, 24 [pid 5827] <... clone resumed>, child_tidptr=0x5555900e7650) = 5828 [pid 5828] <... set_robust_list resumed>) = 0 [pid 5828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5828] setpgid(0, 0) = 0 [pid 5828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5828] write(3, "1000", 4) = 4 [pid 5828] close(3) = 0 [pid 5828] write(1, "executing program\n", 18executing program ) = 18 [pid 5828] memfd_create("syzkaller", 0) = 3 [pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5e98600000 [pid 5828] 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 5828] munmap(0x7f5e98600000, 138412032) = 0 [pid 5828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5828] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5828] close(3) = 0 [pid 5828] close(4) = 0 [pid 5828] mkdir("./file0", 0777) = 0 [ 70.338783][ T5828] loop0: detected capacity change from 0 to 2048 [pid 5828] mount("/dev/loop0", "./file0", "udf", MS_NOSUID|MS_DIRSYNC, "iocharset=koi8-r,unhide,iocharset=cp737,dmode=00000000000000000000011,fileset=00000000000000001023,u"...) = 0 [pid 5828] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5828] chdir("./file0") = 0 [pid 5828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5828] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_DIRECT|O_NOATIME, 0270) = 4 [ 70.398670][ T5828] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 70.412819][ T5828] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 70.438903][ T29] audit: type=1800 audit(1735175672.899:2): pid=5828 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor397" name="file1" dev="loop0" ino=1346 res=0 errno=0 [ 70.463636][ T5828] ------------[ cut here ]------------ [ 70.469778][ T5828] WARNING: CPU: 0 PID: 5828 at fs/udf/truncate.c:224 udf_truncate_extents+0x10c8/0x1310 [ 70.480223][ T5828] Modules linked in: [ 70.484345][ T5828] CPU: 0 UID: 0 PID: 5828 Comm: syz-executor397 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 70.496551][ T5828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 70.507145][ T5828] RIP: 0010:udf_truncate_extents+0x10c8/0x1310 [ 70.513604][ T5828] Code: 48 3b 84 24 a0 01 00 00 0f 85 4b 02 00 00 44 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 69 6c 77 fe 90 <0f> 0b 90 eb 8c 48 8d 8c 24 60 01 00 00 80 e1 07 80 c1 03 38 c1 0f [ 70.533815][ T5828] RSP: 0018:ffffc90003f9f740 EFLAGS: 00010293 [ 70.540033][ T5828] RAX: ffffffff83280777 RBX: 000000000000000a RCX: ffff888034401e00 [ 70.548468][ T5828] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000 [ 70.556793][ T5828] RBP: ffffc90003f9f930 R08: ffffffff8327fb98 R09: ffffffff8325d9ad [ 70.565363][ T5828] R10: 0000000000000002 R11: ffff888034401e00 R12: dffffc0000000000 [ 70.573476][ T5828] R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000 [ 70.581520][ T5828] FS: 00005555900e7380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 70.591140][ T5828] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.598092][ T5828] CR2: 000056439348a960 CR3: 00000000769c2000 CR4: 00000000003526f0 [ 70.606733][ T5828] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.615057][ T5828] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.623435][ T5828] Call Trace: [ 70.626829][ T5828] [ 70.630013][ T5828] ? __warn+0x165/0x4d0 [ 70.634594][ T5828] ? udf_truncate_extents+0x10c8/0x1310 [ 70.640417][ T5828] ? report_bug+0x2b3/0x500 [ 70.645132][ T5828] ? udf_truncate_extents+0x10c8/0x1310 [ 70.650874][ T5828] ? handle_bug+0x60/0x90 [ 70.655873][ T5828] ? exc_invalid_op+0x1a/0x50 [ 70.660798][ T5828] ? asm_exc_invalid_op+0x1a/0x20 [ 70.666334][ T5828] ? udf_current_aext+0x3bd/0xad0 [ 70.671934][ T5828] ? udf_truncate_extents+0x4e8/0x1310 [ 70.677965][ T5828] ? udf_truncate_extents+0x10c7/0x1310 [ 70.683754][ T5828] ? udf_truncate_extents+0x10c8/0x1310 [ 70.690164][ T5828] ? __pfx_udf_truncate_extents+0x10/0x10 [ 70.696527][ T5828] ? __pfx_lock_release+0x10/0x10 [ 70.701860][ T5828] ? do_raw_spin_lock+0x14f/0x370 [ 70.707216][ T5828] ? do_raw_spin_unlock+0x13c/0x8b0 [ 70.712937][ T5828] udf_write_failed+0x176/0x1b0 [ 70.718502][ T5828] udf_direct_IO+0x1c9/0x210 [ 70.723460][ T5828] generic_file_direct_write+0x1e6/0x400 [ 70.729318][ T5828] __generic_file_write_iter+0x126/0x230 [ 70.735040][ T5828] ? udf_file_write_iter+0x2e7/0x660 [ 70.740731][ T5828] udf_file_write_iter+0x2fc/0x660 [ 70.746017][ T5828] do_iter_readv_writev+0x600/0x880 [ 70.751440][ T5828] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 70.757385][ T5828] ? rcu_read_lock_any_held+0xb7/0x160 [ 70.762954][ T5828] vfs_writev+0x376/0xba0 [ 70.767400][ T5828] ? __pfx_vfs_writev+0x10/0x10 [ 70.773081][ T5828] ? _raw_spin_unlock_irq+0x2e/0x50 [ 70.778494][ T5828] ? ptrace_notify+0x279/0x380 [ 70.783361][ T5828] __se_sys_pwritev2+0x196/0x2b0 [ 70.788429][ T5828] ? __pfx___se_sys_pwritev2+0x10/0x10 [ 70.794065][ T5828] ? exc_page_fault+0x590/0x8b0 [ 70.799374][ T5828] ? __x64_sys_pwritev2+0x21/0xf0 [ 70.804870][ T5828] do_syscall_64+0xf3/0x230 [ 70.809585][ T5828] ? clear_bhb_loop+0x35/0x90 [ 70.815572][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.822397][ T5828] RIP: 0033:0x7f5ea0a84ed9 [ 70.826913][ T5828] 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 [ 70.848312][ T5828] RSP: 002b:00007fff6e2ddec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 70.857298][ T5828] RAX: ffffffffffffffda RBX: 00007f5ea0ace09d RCX: 00007f5ea0a84ed9 [ 70.866837][ T5828] RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000004 [ 70.875011][ T5828] RBP: 00007f5ea0af95f0 R08: 0000000000000000 R09: 0000000000000000 [ 70.883737][ T5828] R10: 0000000000800001 R11: 0000000000000246 R12: 00007fff6e2ddf00 [ 70.892551][ T5828] R13: 00007fff6e2de128 R14: 431bde82d7b634db R15: 00007f5ea0ace03b [ 70.900986][ T5828] [ 70.904122][ T5828] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 70.911701][ T5828] CPU: 0 UID: 0 PID: 5828 Comm: syz-executor397 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0 [ 70.923354][ T5828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 70.934352][ T5828] Call Trace: [ 70.937958][ T5828] [ 70.941236][ T5828] dump_stack_lvl+0x241/0x360 [ 70.946542][ T5828] ? __pfx_dump_stack_lvl+0x10/0x10 [ 70.952397][ T5828] ? __pfx__printk+0x10/0x10 [ 70.957707][ T5828] ? _printk+0xd5/0x120 [ 70.961965][ T5828] ? __init_begin+0x41000/0x41000 [ 70.967403][ T5828] ? vscnprintf+0x5d/0x90 [ 70.972051][ T5828] panic+0x349/0x880 [ 70.976334][ T5828] ? __warn+0x174/0x4d0 [ 70.980854][ T5828] ? __pfx_panic+0x10/0x10 [ 70.985331][ T5828] __warn+0x344/0x4d0 [ 70.989864][ T5828] ? udf_truncate_extents+0x10c8/0x1310 [ 70.995739][ T5828] report_bug+0x2b3/0x500 [ 71.000109][ T5828] ? udf_truncate_extents+0x10c8/0x1310 [ 71.006141][ T5828] handle_bug+0x60/0x90 [ 71.010400][ T5828] exc_invalid_op+0x1a/0x50 [ 71.015097][ T5828] asm_exc_invalid_op+0x1a/0x20 [ 71.019961][ T5828] RIP: 0010:udf_truncate_extents+0x10c8/0x1310 [ 71.026560][ T5828] Code: 48 3b 84 24 a0 01 00 00 0f 85 4b 02 00 00 44 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 69 6c 77 fe 90 <0f> 0b 90 eb 8c 48 8d 8c 24 60 01 00 00 80 e1 07 80 c1 03 38 c1 0f [ 71.047345][ T5828] RSP: 0018:ffffc90003f9f740 EFLAGS: 00010293 [ 71.053438][ T5828] RAX: ffffffff83280777 RBX: 000000000000000a RCX: ffff888034401e00 [ 71.062138][ T5828] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000 [ 71.070673][ T5828] RBP: ffffc90003f9f930 R08: ffffffff8327fb98 R09: ffffffff8325d9ad [ 71.078950][ T5828] R10: 0000000000000002 R11: ffff888034401e00 R12: dffffc0000000000 [ 71.087217][ T5828] R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000 [ 71.095801][ T5828] ? udf_current_aext+0x3bd/0xad0 [ 71.101380][ T5828] ? udf_truncate_extents+0x4e8/0x1310 [ 71.107048][ T5828] ? udf_truncate_extents+0x10c7/0x1310 [ 71.113604][ T5828] ? __pfx_udf_truncate_extents+0x10/0x10 [ 71.119907][ T5828] ? __pfx_lock_release+0x10/0x10 [ 71.125137][ T5828] ? do_raw_spin_lock+0x14f/0x370 [ 71.130569][ T5828] ? do_raw_spin_unlock+0x13c/0x8b0 [ 71.135989][ T5828] udf_write_failed+0x176/0x1b0 [ 71.141875][ T5828] udf_direct_IO+0x1c9/0x210 [ 71.146821][ T5828] generic_file_direct_write+0x1e6/0x400 [ 71.153185][ T5828] __generic_file_write_iter+0x126/0x230 [ 71.158953][ T5828] ? udf_file_write_iter+0x2e7/0x660 [ 71.164548][ T5828] udf_file_write_iter+0x2fc/0x660 [ 71.170259][ T5828] do_iter_readv_writev+0x600/0x880 [ 71.176437][ T5828] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 71.182646][ T5828] ? rcu_read_lock_any_held+0xb7/0x160 [ 71.188411][ T5828] vfs_writev+0x376/0xba0 [ 71.192886][ T5828] ? __pfx_vfs_writev+0x10/0x10 [ 71.198041][ T5828] ? _raw_spin_unlock_irq+0x2e/0x50 [ 71.203356][ T5828] ? ptrace_notify+0x279/0x380 [ 71.208695][ T5828] __se_sys_pwritev2+0x196/0x2b0 [ 71.213783][ T5828] ? __pfx___se_sys_pwritev2+0x10/0x10 [ 71.219822][ T5828] ? exc_page_fault+0x590/0x8b0 [ 71.225327][ T5828] ? __x64_sys_pwritev2+0x21/0xf0 [ 71.230808][ T5828] do_syscall_64+0xf3/0x230 [ 71.236060][ T5828] ? clear_bhb_loop+0x35/0x90 [ 71.243921][ T5828] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 71.250486][ T5828] RIP: 0033:0x7f5ea0a84ed9 [ 71.255329][ T5828] 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 [ 71.276012][ T5828] RSP: 002b:00007fff6e2ddec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 71.285073][ T5828] RAX: ffffffffffffffda RBX: 00007f5ea0ace09d RCX: 00007f5ea0a84ed9 [ 71.293763][ T5828] RDX: 0000000000000001 RSI: 00000000200000c0 RDI: 0000000000000004 [ 71.302990][ T5828] RBP: 00007f5ea0af95f0 R08: 0000000000000000 R09: 0000000000000000 [ 71.311193][ T5828] R10: 0000000000800001 R11: 0000000000000246 R12: 00007fff6e2ddf00 [ 71.320071][ T5828] R13: 00007fff6e2de128 R14: 431bde82d7b634db R15: 00007f5ea0ace03b [ 71.328967][ T5828] [ 71.332417][ T5828] Kernel Offset: disabled [ 71.337172][ T5828] Rebooting in 86400 seconds..