./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1677853496 <...> Warning: Permanently added '10.128.1.74' (ED25519) to the list of known hosts. execve("./syz-executor1677853496", ["./syz-executor1677853496"], 0x7ffc594f4110 /* 10 vars */) = 0 brk(NULL) = 0x55558277f000 brk(0x55558277fd00) = 0x55558277fd00 arch_prctl(ARCH_SET_FS, 0x55558277f380) = 0 set_tid_address(0x55558277f650) = 5822 set_robust_list(0x55558277f660, 24) = 0 rseq(0x55558277fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1677853496", 4096) = 28 getrandom("\x97\x78\x99\x5d\xe4\x1b\x1d\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558277fd00 brk(0x5555827a0d00) = 0x5555827a0d00 brk(0x5555827a1000) = 0x5555827a1000 mprotect(0x7fbf00e1e000, 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 5824 attached , child_tidptr=0x55558277f650) = 5824 [pid 5824] set_robust_list(0x55558277f660, 24) = 0 [pid 5824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5824] setpgid(0, 0) = 0 [pid 5824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5824] write(3, "1000", 4) = 4 [pid 5824] close(3) = 0 executing program [pid 5824] write(1, "executing program\n", 18) = 18 [pid 5824] memfd_create("syzkaller", 0) = 3 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbef8800000 [pid 5824] 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 5824] munmap(0x7fbef8800000, 138412032) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5824] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5824] close(3) = 0 [pid 5824] close(4) = 0 [pid 5824] mkdir("./file1", 0777) = 0 [ 70.207418][ T5824] loop0: detected capacity change from 0 to 2048 [pid 5824] 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 5824] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5824] chdir("./file1") = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5824] mkdir("./control", 000) = 0 [pid 5824] open("./control/file0", O_RDONLY|O_CREAT|O_CLOEXEC, 000) = 4 [pid 5824] unlink("./control/file0") = 0 [pid 5824] rmdir("./control") = 0 [ 70.259215][ T5824] UDF-fs: error (device loop0): udf_process_sequence: Primary Volume Descriptor not found! [ 70.272211][ T5824] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 70.308140][ T5824] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN PTI [ 70.320760][ T5824] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 70.329192][ T5824] CPU: 1 UID: 0 PID: 5824 Comm: syz-executor167 Not tainted 6.13.0-syzkaller-09793-g69b8923f5003 #0 [ 70.339947][ T5824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 70.350001][ T5824] RIP: 0010:__d_unalias+0x199/0x2a0 [ 70.355219][ T5824] Code: 98 00 00 00 4c 89 fb 48 c1 eb 03 49 89 ed 80 3c 2b 00 74 08 4c 89 ff e8 65 62 e7 ff 49 8b 2f 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 48 62 e7 ff 4c 8b 5d 00 4d 85 db [ 70.374831][ T5824] RSP: 0018:ffffc90003f37b98 EFLAGS: 00010202 [ 70.380909][ T5824] RAX: 000000000000000d RBX: 1ffff1100f4d3f61 RCX: ffff888078d01e00 [ 70.388920][ T5824] RDX: 0000000000000000 RSI: ffff88807a69fa70 RDI: ffff88807a69f608 [ 70.396893][ T5824] RBP: 0000000000000068 R08: ffff88807a71b0e3 R09: 1ffff1100f4e361c [ 70.404868][ T5824] R10: dffffc0000000000 R11: ffffed100f4e361d R12: ffff88807a69fa70 [ 70.412838][ T5824] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807a69fb08 [ 70.420811][ T5824] FS: 000055558277f380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 70.429740][ T5824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.436322][ T5824] CR2: 00005608b6b15fe8 CR3: 000000003507a000 CR4: 00000000003526f0 [ 70.444295][ T5824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.452261][ T5824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.460316][ T5824] Call Trace: [ 70.463594][ T5824] [ 70.466530][ T5824] ? __die_body+0x5f/0xb0 [ 70.470885][ T5824] ? die_addr+0xb0/0xe0 [ 70.475046][ T5824] ? exc_general_protection+0x3dd/0x5d0 [ 70.480616][ T5824] ? asm_exc_general_protection+0x26/0x30 [ 70.486348][ T5824] ? __d_unalias+0x199/0x2a0 [ 70.490949][ T5824] ? __d_unalias+0x162/0x2a0 [ 70.495546][ T5824] d_splice_alias+0x1e6/0x330 [ 70.500236][ T5824] udf_lookup+0x1f4/0x2b0 [ 70.504572][ T5824] ? __pfx_udf_lookup+0x10/0x10 [ 70.509421][ T5824] ? do_raw_spin_unlock+0x13c/0x8b0 [ 70.514616][ T5824] ? _raw_spin_unlock+0x28/0x50 [ 70.519473][ T5824] ? d_alloc+0x142/0x190 [ 70.523718][ T5824] lookup_one_qstr_excl+0x126/0x2b0 [ 70.528918][ T5824] do_rmdir+0x297/0x580 [ 70.533067][ T5824] ? __virt_addr_valid+0x183/0x530 [ 70.538176][ T5824] ? __pfx_do_rmdir+0x10/0x10 [ 70.542851][ T5824] ? getname_flags+0x1e3/0x540 [ 70.547619][ T5824] __x64_sys_rmdir+0x47/0x50 [ 70.552213][ T5824] do_syscall_64+0xf3/0x230 [ 70.556719][ T5824] ? clear_bhb_loop+0x35/0x90 [ 70.561403][ T5824] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.567309][ T5824] RIP: 0033:0x7fbf00da9d99 [ 70.571732][ T5824] 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 [ 70.591354][ T5824] RSP: 002b:00007ffcedb9d7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 70.599785][ T5824] RAX: ffffffffffffffda RBX: 6f72746e6f632f2e RCX: 00007fbf00da9d99 [ 70.607754][ T5824] RDX: 00007fbf00da9d99 RSI: 00007fbf00da9d99 RDI: 0000000020000100 [ 70.615718][ T5824] RBP: 00007fbf00e1e5f0 R08: 00005555827804c0 R09: 00005555827804c0 [ 70.623688][ T5824] R10: 00005555827804c0 R11: 0000000000000246 R12: 00007ffcedb9d810 [ 70.631665][ T5824] R13: 00007ffcedb9da38 R14: 431bde82d7b634db R15: 00007fbf00df303b [ 70.639643][ T5824] [ 70.642658][ T5824] Modules linked in: [ 70.646714][ T5824] ---[ end trace 0000000000000000 ]--- [ 70.652679][ T5824] RIP: 0010:__d_unalias+0x199/0x2a0 [ 70.657951][ T5824] Code: 98 00 00 00 4c 89 fb 48 c1 eb 03 49 89 ed 80 3c 2b 00 74 08 4c 89 ff e8 65 62 e7 ff 49 8b 2f 48 83 c5 68 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 48 62 e7 ff 4c 8b 5d 00 4d 85 db [ 70.677628][ T5824] RSP: 0018:ffffc90003f37b98 EFLAGS: 00010202 [ 70.683718][ T5824] RAX: 000000000000000d RBX: 1ffff1100f4d3f61 RCX: ffff888078d01e00 [ 70.691712][ T5824] RDX: 0000000000000000 RSI: ffff88807a69fa70 RDI: ffff88807a69f608 [ 70.699726][ T5824] RBP: 0000000000000068 R08: ffff88807a71b0e3 R09: 1ffff1100f4e361c [ 70.707736][ T5824] R10: dffffc0000000000 R11: ffffed100f4e361d R12: ffff88807a69fa70 [ 70.715716][ T5824] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807a69fb08 [ 70.723730][ T5824] FS: 000055558277f380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 70.732681][ T5824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.739316][ T5824] CR2: 00005608b6b15fe8 CR3: 000000003507a000 CR4: 00000000003526f0 [ 70.747347][ T5824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.755316][ T5824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.763364][ T5824] Kernel panic - not syncing: Fatal exception [ 70.769773][ T5824] Kernel Offset: disabled [ 70.774114][ T5824] Rebooting in 86400 seconds..