./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1658056251 <...> Warning: Permanently added '10.128.10.15' (ED25519) to the list of known hosts. execve("./syz-executor1658056251", ["./syz-executor1658056251"], 0x7ffc0be72a00 /* 10 vars */) = 0 brk(NULL) = 0x555581642000 brk(0x555581642d00) = 0x555581642d00 arch_prctl(ARCH_SET_FS, 0x555581642380) = 0 set_tid_address(0x555581642650) = 5831 set_robust_list(0x555581642660, 24) = 0 rseq(0x555581642ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1658056251", 4096) = 28 getrandom("\xb5\xa3\x99\x99\xd3\xf4\x3b\x29", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581642d00 brk(0x555581663d00) = 0x555581663d00 brk(0x555581664000) = 0x555581664000 mprotect(0x7f9ee01b7000, 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, child_tidptr=0x555581642650) = 5832 ./strace-static-x86_64: Process 5832 attached [pid 5832] set_robust_list(0x555581642660, 24) = 0 [pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5832] setpgid(0, 0) = 0 [pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5832] write(3, "1000", 4) = 4 [pid 5832] close(3) = 0 executing program [pid 5832] write(1, "executing program\n", 18) = 18 [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9ed7c00000 [pid 5832] 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 5832] munmap(0x7f9ed7c00000, 138412032) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5832] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5832] close(3) = 0 [pid 5832] close(4) = 0 [pid 5832] mkdir("./file1", 0777) = 0 [ 92.488461][ T5832] loop0: detected capacity change from 0 to 2048 [ 92.527274][ T5832] UDF-fs: error (device loop0): udf_process_sequence: Primary Volume Descriptor not found! [pid 5832] mount("/dev/loop0", "./file1", "udf", MS_NOEXEC|MS_POSIXACL|MS_RELATIME, "uid=00000000000000000000,undelete,novrs,adinicb,volume=00000000000000000002,uid=forget,gid=forget,no"...) = 0 [pid 5832] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5832] chdir("./file1") = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5832] mkdir("./control", 000) = 0 [pid 5832] open("./control/file0", O_RDONLY|O_CREAT|O_CLOEXEC, 000) = 4 [pid 5832] unlink("./control/file0") = 0 [pid 5832] rmdir("./control") = 0 [ 92.543104][ T5832] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 92.577770][ T5832] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 92.590892][ T5832] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 92.599329][ T5832] CPU: 0 UID: 0 PID: 5832 Comm: syz-executor165 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0 [ 92.610126][ T5832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 92.620200][ T5832] RIP: 0010:d_splice_alias+0x9cd/0xf30 [ 92.625708][ T5832] Code: 48 c1 ea 03 80 3c 02 00 0f 85 4e 05 00 00 49 8b 85 70 ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 14 05 00 00 48 8b 40 68 48 85 c0 74 31 48 89 44 [ 92.645374][ T5832] RSP: 0018:ffffc90003667c18 EFLAGS: 00010212 [ 92.651498][ T5832] RAX: 0000000000000000 RBX: ffff88807dbd7318 RCX: 000000000000000d [ 92.659667][ T5832] RDX: dffffc0000000000 RSI: ffffffff82348f0c RDI: 0000000000000068 [ 92.667656][ T5832] RBP: ffff8880754107b8 R08: 0000000000000000 R09: ffffed100f23d67a [ 92.675637][ T5832] R10: ffff8880791eb3d3 R11: 0000000000000032 R12: ffff8880791eb318 [ 92.683633][ T5832] R13: ffff8880791eafd8 R14: ffff8880791eaeb0 R15: ffff8880791eaf48 [ 92.691623][ T5832] FS: 0000555581642380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 92.700615][ T5832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.707230][ T5832] CR2: 00007ffe875be000 CR3: 0000000076b7a000 CR4: 0000000000350ef0 [ 92.715606][ T5832] Call Trace: [ 92.718907][ T5832] [ 92.722022][ T5832] ? die_addr+0x3b/0xa0 [ 92.726213][ T5832] ? exc_general_protection+0x155/0x230 [ 92.731816][ T5832] ? asm_exc_general_protection+0x26/0x30 [ 92.737670][ T5832] ? d_splice_alias+0x98c/0xf30 [ 92.742580][ T5832] ? d_splice_alias+0x9cd/0xf30 [ 92.747478][ T5832] ? d_splice_alias+0x98c/0xf30 [ 92.752449][ T5832] udf_lookup+0x191/0x240 [ 92.756931][ T5832] ? __pfx_udf_lookup+0x10/0x10 [ 92.761812][ T5832] ? lock_acquire.part.0+0x11b/0x380 [ 92.767166][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.772846][ T5832] ? find_held_lock+0x2d/0x110 [ 92.777772][ T5832] ? lock_acquire+0x2f/0xb0 [ 92.782320][ T5832] ? d_alloc+0x6a/0x1e0 [ 92.786490][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.792673][ T5832] ? do_raw_spin_unlock+0x172/0x230 [ 92.798004][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.803716][ T5832] ? _raw_spin_unlock+0x28/0x50 [ 92.808617][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.814477][ T5832] lookup_one_qstr_excl+0x120/0x190 [ 92.819804][ T5832] ? mnt_want_write+0x161/0x450 [ 92.824691][ T5832] do_rmdir+0x247/0x410 [ 92.828885][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.834571][ T5832] ? __pfx_do_rmdir+0x10/0x10 [ 92.839296][ T5832] ? srso_alias_return_thunk+0x5/0xfbef5 [ 92.844998][ T5832] ? getname_flags.part.0+0x1c5/0x550 [ 92.850419][ T5832] __x64_sys_rmdir+0xc5/0x110 [ 92.855164][ T5832] do_syscall_64+0xcd/0x250 [ 92.859849][ T5832] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 92.865795][ T5832] RIP: 0033:0x7f9ee0142d99 [ 92.870245][ T5832] 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 [ 92.889930][ T5832] RSP: 002b:00007ffe875bd248 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 92.898398][ T5832] RAX: ffffffffffffffda RBX: 6f72746e6f632f2e RCX: 00007f9ee0142d99 [ 92.906406][ T5832] RDX: 00007f9ee0142d99 RSI: 00007f9ee0142d99 RDI: 0000000020000100 [ 92.914432][ T5832] RBP: 00007f9ee01b75f0 R08: 00005555816434c0 R09: 00005555816434c0 [ 92.922465][ T5832] R10: 00005555816434c0 R11: 0000000000000246 R12: 00007ffe875bd270 [ 92.930465][ T5832] R13: 00007ffe875bd498 R14: 431bde82d7b634db R15: 00007f9ee018c03b [ 92.938582][ T5832] [ 92.941617][ T5832] Modules linked in: [ 92.946037][ T5832] ---[ end trace 0000000000000000 ]--- [ 92.951639][ T5832] RIP: 0010:d_splice_alias+0x9cd/0xf30 [ 92.957196][ T5832] Code: 48 c1 ea 03 80 3c 02 00 0f 85 4e 05 00 00 49 8b 85 70 ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 14 05 00 00 48 8b 40 68 48 85 c0 74 31 48 89 44 [ 92.976884][ T5832] RSP: 0018:ffffc90003667c18 EFLAGS: 00010212 [ 92.983175][ T5832] RAX: 0000000000000000 RBX: ffff88807dbd7318 RCX: 000000000000000d [ 92.991214][ T5832] RDX: dffffc0000000000 RSI: ffffffff82348f0c RDI: 0000000000000068 [ 92.999261][ T5832] RBP: ffff8880754107b8 R08: 0000000000000000 R09: ffffed100f23d67a [ 93.007285][ T5832] R10: ffff8880791eb3d3 R11: 0000000000000032 R12: ffff8880791eb318 [ 93.015307][ T5832] R13: ffff8880791eafd8 R14: ffff8880791eaeb0 R15: ffff8880791eaf48 [ 93.023382][ T5832] FS: 0000555581642380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 93.032377][ T5832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.039052][ T5832] CR2: 00007ffe875be000 CR3: 0000000076b7a000 CR4: 0000000000350ef0 [ 93.047188][ T5832] Kernel panic - not syncing: Fatal exception [ 93.053540][ T5832] Kernel Offset: disabled [ 93.057871][ T5832] Rebooting in 86400 seconds..