./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2305115379
<...>
Warning: Permanently added '10.128.1.166' (ED25519) to the list of known hosts.
execve("./syz-executor2305115379", ["./syz-executor2305115379"], 0x7ffd90272170 /* 10 vars */) = 0
brk(NULL) = 0x55556b0df000
brk(0x55556b0dfd00) = 0x55556b0dfd00
arch_prctl(ARCH_SET_FS, 0x55556b0df380) = 0
set_tid_address(0x55556b0df650) = 5816
set_robust_list(0x55556b0df660, 24) = 0
rseq(0x55556b0dfca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2305115379", 4096) = 28
getrandom("\x87\x7a\x6d\x1a\xc8\x17\x56\xe7", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556b0dfd00
brk(0x55556b100d00) = 0x55556b100d00
brk(0x55556b101000) = 0x55556b101000
mprotect(0x7f423c279000, 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 5818 attached
, child_tidptr=0x55556b0df650) = 5818
[pid 5818] set_robust_list(0x55556b0df660, 24) = 0
[pid 5818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5818] setpgid(0, 0) = 0
[pid 5818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5818] write(3, "1000", 4) = 4
[pid 5818] close(3) = 0
executing program
[pid 5818] write(1, "executing program\n", 18) = 18
[pid 5818] memfd_create("syzkaller", 0) = 3
[pid 5818] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4233c00000
[pid 5818] 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 5818] munmap(0x7f4233c00000, 138412032) = 0
[pid 5818] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5818] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5818] close(3) = 0
[pid 5818] close(4) = 0
[pid 5818] mkdir("./file0", 0777) = 0
syzkaller login: [ 52.426979][ T5818] loop0: detected capacity change from 0 to 2048
[ 52.462701][ T5818] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found
[ 52.470353][ T5818] UDF-fs: Scanning with blocksize 512 failed
[pid 5818] mount("/dev/loop0", "./file0", "udf", 0, "") = 0
[pid 5818] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5818] chdir("./file0") = 0
[pid 5818] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid 5818] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT, 000) = 4
[pid 5818] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 5
[pid 5818] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c) = 6
[pid 5818] mmap(0x20000000, 6291456, PROT_WRITE|PROT_EXEC|PROT_SEM|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1<<MAP_HUGE_SHIFT, 6, 0) = 0x20000000
[pid 5818] ftruncate(6, 2150145) = 0
[ 52.479127][ T5818] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
[pid 5818] read(6, 0x20000f80, 4294966872) = 184448
[ 52.540940][ T5818] ------------[ cut here ]------------
[ 52.546458][ T5818] WARNING: CPU: 1 PID: 5818 at fs/udf/truncate.c:224 udf_truncate_extents+0x10c8/0x1310
[ 52.556206][ T5818] Modules linked in:
[ 52.560103][ T5818] CPU: 1 UID: 0 PID: 5818 Comm: syz-executor230 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0
[ 52.571249][ T5818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
[ 52.581329][ T5818] RIP: 0010:udf_truncate_extents+0x10c8/0x1310
[ 52.587526][ T5818] 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 79 82 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
[ 52.607172][ T5818] RSP: 0018:ffffc900039e78a0 EFLAGS: 00010293
[ 52.613272][ T5818] RAX: ffffffff8327db77 RBX: 000000000000000a RCX: ffff88802ca73c00
[ 52.621252][ T5818] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000
[ 52.629265][ T5818] RBP: ffffc900039e7a90 R08: ffffffff8327cf98 R09: ffffffff8325adad
[ 52.637309][ T5818] R10: 0000000000000002 R11: ffff88802ca73c00 R12: dffffc0000000000
[ 52.645326][ T5818] R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000
[ 52.653314][ T5818] FS: 000055556b0df380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 52.662247][ T5818] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 52.668847][ T5818] CR2: 000000002002e000 CR3: 0000000030b7c000 CR4: 00000000003526f0
[ 52.676836][ T5818] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 52.684824][ T5818] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 52.692810][ T5818] Call Trace:
[ 52.696073][ T5818] <TASK>
[ 52.698986][ T5818] ? __warn+0x165/0x4d0
[ 52.703166][ T5818] ? udf_truncate_extents+0x10c8/0x1310
[ 52.708723][ T5818] ? report_bug+0x2b3/0x500
[ 52.713250][ T5818] ? udf_truncate_extents+0x10c8/0x1310
[ 52.718813][ T5818] ? handle_bug+0x60/0x90
[ 52.723158][ T5818] ? exc_invalid_op+0x1a/0x50
[ 52.727846][ T5818] ? asm_exc_invalid_op+0x1a/0x20
[ 52.732896][ T5818] ? udf_current_aext+0x3bd/0xad0
[ 52.737930][ T5818] ? udf_truncate_extents+0x4e8/0x1310
[ 52.743493][ T5818] ? udf_truncate_extents+0x10c7/0x1310
[ 52.749055][ T5818] ? udf_truncate_extents+0x10c8/0x1310
[ 52.754619][ T5818] ? folio_zero_new_buffers+0x2fc/0x350
[ 52.760214][ T5818] ? __pfx_udf_truncate_extents+0x10/0x10
[ 52.765961][ T5818] ? __pfx_lock_release+0x10/0x10
[ 52.770987][ T5818] ? do_raw_spin_lock+0x14f/0x370
[ 52.776036][ T5818] ? do_raw_spin_unlock+0x13c/0x8b0
[ 52.781247][ T5818] udf_write_failed+0x176/0x1b0
[ 52.786119][ T5818] udf_write_begin+0x1f7/0x250
[ 52.790886][ T5818] generic_perform_write+0x346/0x990
[ 52.796194][ T5818] ? __pfx_generic_perform_write+0x10/0x10
[ 52.802008][ T5818] ? __generic_file_write_iter+0x102/0x230
[ 52.807833][ T5818] ? udf_file_write_iter+0x2e7/0x660
[ 52.813159][ T5818] udf_file_write_iter+0x2fc/0x660
[ 52.818271][ T5818] vfs_write+0xaeb/0xd30
[ 52.822539][ T5818] ? __pfx_udf_file_write_iter+0x10/0x10
[ 52.828179][ T5818] ? __pfx_vfs_write+0x10/0x10
[ 52.832956][ T5818] ? rcu_is_watching+0x15/0xb0
[ 52.837750][ T5818] ? _raw_spin_unlock_irq+0x2e/0x50
[ 52.842962][ T5818] ? ptrace_notify+0x279/0x380
[ 52.847735][ T5818] ksys_write+0x18f/0x2b0
[ 52.852064][ T5818] ? __pfx_ksys_write+0x10/0x10
[ 52.856960][ T5818] ? rcu_is_watching+0x15/0xb0
[ 52.861740][ T5818] do_syscall_64+0xf3/0x230
[ 52.866280][ T5818] ? clear_bhb_loop+0x35/0x90
[ 52.870962][ T5818] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 52.876872][ T5818] RIP: 0033:0x7f423c205b99
[ 52.881314][ T5818] 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
[ 52.900937][ T5818] RSP: 002b:00007ffdc92b6628 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 52.909409][ T5818] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f423c205b99
[ 52.917394][ T5818] RDX: 00000000fffffdef RSI: 00000000200000c0 RDI: 0000000000000004
[ 52.925381][ T5818] RBP: 00007f423c2795f0 R08: 0000000000000000 R09: 0000000000000000
[ 52.933374][ T5818] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc92b6660
[ 52.941337][ T5818] R13: 00007ffdc92b6888 R14: 431bde82d7b634db R15: 00007f423c24e03b
[ 52.949339][ T5818] </TASK>
[ 52.952393][ T5818] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 52.959657][ T5818] CPU: 1 UID: 0 PID: 5818 Comm: syz-executor230 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0
[ 52.970762][ T5818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
[ 52.980803][ T5818] Call Trace:
[ 52.984080][ T5818] <TASK>
[ 52.987005][ T5818] dump_stack_lvl+0x241/0x360
[ 52.991677][ T5818] ? __pfx_dump_stack_lvl+0x10/0x10
[ 52.996866][ T5818] ? __pfx__printk+0x10/0x10
[ 53.001444][ T5818] ? _printk+0xd5/0x120
[ 53.005588][ T5818] ? __init_begin+0x41000/0x41000
[ 53.010604][ T5818] ? vscnprintf+0x5d/0x90
[ 53.014924][ T5818] panic+0x349/0x880
[ 53.018809][ T5818] ? __warn+0x174/0x4d0
[ 53.022956][ T5818] ? __pfx_panic+0x10/0x10
[ 53.027373][ T5818] __warn+0x344/0x4d0
[ 53.031342][ T5818] ? udf_truncate_extents+0x10c8/0x1310
[ 53.036882][ T5818] report_bug+0x2b3/0x500
[ 53.041230][ T5818] ? udf_truncate_extents+0x10c8/0x1310
[ 53.046772][ T5818] handle_bug+0x60/0x90
[ 53.050927][ T5818] exc_invalid_op+0x1a/0x50
[ 53.055431][ T5818] asm_exc_invalid_op+0x1a/0x20
[ 53.060274][ T5818] RIP: 0010:udf_truncate_extents+0x10c8/0x1310
[ 53.066425][ T5818] 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 79 82 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
[ 53.086021][ T5818] RSP: 0018:ffffc900039e78a0 EFLAGS: 00010293
[ 53.092082][ T5818] RAX: ffffffff8327db77 RBX: 000000000000000a RCX: ffff88802ca73c00
[ 53.100045][ T5818] RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000
[ 53.108004][ T5818] RBP: ffffc900039e7a90 R08: ffffffff8327cf98 R09: ffffffff8325adad
[ 53.115981][ T5818] R10: 0000000000000002 R11: ffff88802ca73c00 R12: dffffc0000000000
[ 53.123942][ T5818] R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000
[ 53.131931][ T5818] ? udf_current_aext+0x3bd/0xad0
[ 53.136948][ T5818] ? udf_truncate_extents+0x4e8/0x1310
[ 53.142419][ T5818] ? udf_truncate_extents+0x10c7/0x1310
[ 53.147975][ T5818] ? folio_zero_new_buffers+0x2fc/0x350
[ 53.153516][ T5818] ? __pfx_udf_truncate_extents+0x10/0x10
[ 53.159262][ T5818] ? __pfx_lock_release+0x10/0x10
[ 53.164280][ T5818] ? do_raw_spin_lock+0x14f/0x370
[ 53.169306][ T5818] ? do_raw_spin_unlock+0x13c/0x8b0
[ 53.174502][ T5818] udf_write_failed+0x176/0x1b0
[ 53.179347][ T5818] udf_write_begin+0x1f7/0x250
[ 53.184130][ T5818] generic_perform_write+0x346/0x990
[ 53.189407][ T5818] ? __pfx_generic_perform_write+0x10/0x10
[ 53.195206][ T5818] ? __generic_file_write_iter+0x102/0x230
[ 53.201000][ T5818] ? udf_file_write_iter+0x2e7/0x660
[ 53.206275][ T5818] udf_file_write_iter+0x2fc/0x660
[ 53.211377][ T5818] vfs_write+0xaeb/0xd30
[ 53.215616][ T5818] ? __pfx_udf_file_write_iter+0x10/0x10
[ 53.221239][ T5818] ? __pfx_vfs_write+0x10/0x10
[ 53.225997][ T5818] ? rcu_is_watching+0x15/0xb0
[ 53.230780][ T5818] ? _raw_spin_unlock_irq+0x2e/0x50
[ 53.235972][ T5818] ? ptrace_notify+0x279/0x380
[ 53.240743][ T5818] ksys_write+0x18f/0x2b0
[ 53.245087][ T5818] ? __pfx_ksys_write+0x10/0x10
[ 53.249932][ T5818] ? rcu_is_watching+0x15/0xb0
[ 53.254694][ T5818] do_syscall_64+0xf3/0x230
[ 53.259218][ T5818] ? clear_bhb_loop+0x35/0x90
[ 53.263896][ T5818] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 53.269782][ T5818] RIP: 0033:0x7f423c205b99
[ 53.274188][ T5818] 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
[ 53.293790][ T5818] RSP: 002b:00007ffdc92b6628 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 53.302200][ T5818] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f423c205b99
[ 53.310162][ T5818] RDX: 00000000fffffdef RSI: 00000000200000c0 RDI: 0000000000000004
[ 53.318128][ T5818] RBP: 00007f423c2795f0 R08: 0000000000000000 R09: 0000000000000000
[ 53.326097][ T5818] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc92b6660
[ 53.334066][ T5818] R13: 00007ffdc92b6888 R14: 431bde82d7b634db R15: 00007f423c24e03b
[ 53.342034][ T5818] </TASK>
[ 53.345275][ T5818] Kernel Offset: disabled
[ 53.349585][ T5818] Rebooting in 86400 seconds..