UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 3224 Comm: syz.1.987 Not tainted syzkaller #0 79a81a3ed2cf63e2a306eb4bbf59144c10c9503d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:current_umask+0x4d/0x80 fs/fs_struct.c:158
Code: 81 c3 78 08 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 61 8b e5 ff 48 8b 1b 48 83 c3 0c 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 0c 8b 03 5b 41 5e 5d e9 ff 32 a7 03 cc 89
RSP: 0018:ffffc9000b4bf4d8 EFLAGS: 00010203
RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff888106b58000
RDX: 0000000000000000 RSI: ffffffff876ec0e0 RDI: 0000000000000000
RBP: ffffc9000b4bf4e8 R08: ffff888106b58000 R09: 0000000000000002
R10: ffffffffffffffa1 R11: 0000000000000000 R12: 1ffff92001697eab
R13: ffff88810bbff480 R14: dffffc0000000000 R15: 1ffff1102177fe90
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0607617dac CR3: 00000000074a8000 CR4: 00000000003526b0
Call Trace:
<TASK>
posix_acl_create+0x18a/0x3e0 fs/posix_acl.c:649
simple_acl_create+0x3e/0x1c0 fs/posix_acl.c:1041
shmem_mknod+0x83/0x200 mm/shmem.c:3601
vfs_mknod+0x607/0x6d0 fs/namei.c:4143
vfs_whiteout include/linux/fs.h:1983 [inline]
ovl_do_whiteout fs/overlayfs/overlayfs.h:382 [inline]
ovl_whiteout fs/overlayfs/dir.c:78 [inline]
ovl_cleanup_and_whiteout+0x215/0x6d0 fs/overlayfs/dir.c:118
ovl_remove_and_whiteout fs/overlayfs/dir.c:791 [inline]
ovl_do_remove+0x91a/0xda0 fs/overlayfs/dir.c:914
ovl_rmdir+0x1e/0x30 fs/overlayfs/dir.c:945
vfs_rmdir+0x3e3/0x560 fs/namei.c:4348
incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968
deactivate_locked_super+0xd5/0x2a0 fs/super.c:476
deactivate_super+0xb8/0xe0 fs/super.c:509
cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380
__cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
task_work_run+0x1e5/0x260 kernel/task_work.c:246
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0x9e3/0x2650 kernel/exit.c:953
do_group_exit+0x229/0x2f0 kernel/exit.c:1095
get_signal+0x1398/0x14e0 kernel/signal.c:2933
arch_do_signal_or_restart+0xbc/0x760 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x57/0xb0 kernel/entry/common.c:218
do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fac9b19af79
Code: Unable to access opcode bytes at 0x7fac9b19af4f.
RSP: 002b:00007fac9bfd70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fac9b415fa8 RCX: 00007fac9b19af79
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fac9b415fac
RBP: 00007fac9b415fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fac9b416038 R14: 00007ffff00b4da0 R15: 00007ffff00b4e88
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:current_umask+0x4d/0x80 fs/fs_struct.c:158
Code: 81 c3 78 08 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 61 8b e5 ff 48 8b 1b 48 83 c3 0c 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 0c 8b 03 5b 41 5e 5d e9 ff 32 a7 03 cc 89
RSP: 0018:ffffc9000b4bf4d8 EFLAGS: 00010203
RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff888106b58000
RDX: 0000000000000000 RSI: ffffffff876ec0e0 RDI: 0000000000000000
RBP: ffffc9000b4bf4e8 R08: ffff888106b58000 R09: 0000000000000002
R10: ffffffffffffffa1 R11: 0000000000000000 R12: 1ffff92001697eab
R13: ffff88810bbff480 R14: dffffc0000000000 R15: 1ffff1102177fe90
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f06075e4198 CR3: 000000010ebe8000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 81 c3 78 08 00 00 add $0x878,%ebx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 61 8b e5 ff call 0xffe58b7d
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 0c add $0xc,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 75 0c jne 0x3f
33: 8b 03 mov (%rbx),%eax
35: 5b pop %rbx
36: 41 5e pop %r14
38: 5d pop %rbp
39: e9 ff 32 a7 03 jmp 0x3a7333d
3e: cc int3
3f: 89 .byte 0x89