Oops: general protection fault, probably for non-canonical address 0xdffffc0000000060: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000300-0x0000000000000307]
CPU: 1 UID: 0 PID: 28143 Comm: modprobe Not tainted syzkaller #0 PREEMPT(voluntary)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:284
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 58 48 89 f0 48 89 f2 0f b6 6b ff 4c 8d 66 01 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 2c 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900001a89b8 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff878a7e81 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff878a7e80
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88811af7c00b R11: 0000000000000001 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8eae4518
FS: 0000000000000000(0000) GS:ffff888268cf5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e623ffc CR3: 000000014ddb4000 CR4: 00000000003506f0
Call Trace:
count_matching_names kernel/locking/lockdep.c:878 [inline]
register_lock_class+0x267/0x4b0 kernel/locking/lockdep.c:1344
__lock_acquire+0xa4/0x2890 kernel/locking/lockdep.c:5112
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x179/0x330 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
complete_with_flags kernel/sched/completion.c:25 [inline]
complete+0x1d/0x200 kernel/sched/completion.c:52
transfer drivers/usb/gadget/udc/dummy_hcd.c:1523 [inline]
dummy_timer+0x1c3e/0x3ad0 drivers/usb/gadget/udc/dummy_hcd.c:1979
__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
__hrtimer_run_queues+0x202/0xc40 kernel/time/hrtimer.c:1841
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1858
handle_softirqs+0x208/0x940 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:124 [inline]
RIP: 0010:lock_is_held_type+0x45/0x150 kernel/locking/lockdep.c:5933
Code: ce 4d 03 85 c9 0f 84 dd 00 00 00 65 8b 05 cb 29 4c 05 85 c0 0f 85 ce 00 00 00 65 4c 8b 25 eb e5 4b 05 41 8b 94 24 a4 0a 00 00 <85> d2 0f 85 b6 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 fa 48 c7 c7
RSP: 0018:ffffc90001f6f2c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8881404c4b40 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8881404c4b40
RBP: ffff88812e6f8400 R08: 0000000000000005 R09: 0000000000000300
R10: 0000000000000300 R11: ffff888119d8e268 R12: ffff888119d8d7c0
R13: 00000000ffffffff R14: ffff8881404c4840 R15: ffffc90001f6f48d
lock_is_held include/linux/lockdep.h:249 [inline]
mt_locked lib/maple_tree.c:729 [inline]
mt_slot lib/maple_tree.c:736 [inline]
mas_next_slot+0x46d/0x1cb0 lib/maple_tree.c:4406
mas_find+0x36f/0x6d0 lib/maple_tree.c:5622
vma_next include/linux/mm.h:1118 [inline]
validate_mm+0x126/0x560 mm/vma.c:645
__split_vma+0xabe/0x1020 mm/vma.c:562
vms_gather_munmap_vmas+0x1cb/0x12c0 mm/vma.c:1362
do_vmi_align_munmap+0x286/0x7e0 mm/vma.c:1530
do_vmi_munmap+0x204/0x3e0 mm/vma.c:1587
__vm_munmap+0x196/0x370 mm/vma.c:3203
elf_map fs/binfmt_elf.c:397 [inline]
elf_load+0x349/0x780 fs/binfmt_elf.c:422
load_elf_binary+0x13b7/0x4ef0 fs/binfmt_elf.c:1188
search_binary_handler fs/exec.c:1669 [inline]
exec_binprm fs/exec.c:1701 [inline]
bprm_execve fs/exec.c:1753 [inline]
bprm_execve+0x8c7/0x15e0 fs/exec.c:1729
kernel_execve+0x2ef/0x3b0 fs/exec.c:1919
call_usermodehelper_exec_async+0x255/0x4c0 kernel/umh.c:109
ret_from_fork+0x74f/0xa30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:284
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 58 48 89 f0 48 89 f2 0f b6 6b ff 4c 8d 66 01 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 2c 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900001a89b8 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff878a7e81 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff878a7e80
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88811af7c00b R11: 0000000000000001 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8eae4518
FS: 0000000000000000(0000) GS:ffff888268cf5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e623ffc CR3: 000000014ddb4000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
0: fa cli
1: 48 c1 e8 03 shr $0x3,%rax
5: 83 e2 07 and $0x7,%edx
8: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
d: 38 d0 cmp %dl,%al
f: 7f 04 jg 0x15
11: 84 c0 test %al,%al
13: 75 58 jne 0x6d
15: 48 89 f0 mov %rsi,%rax
18: 48 89 f2 mov %rsi,%rdx
1b: 0f b6 6b ff movzbl -0x1(%rbx),%ebp
1f: 4c 8d 66 01 lea 0x1(%rsi),%r12
23: 48 c1 e8 03 shr $0x3,%rax
27: 83 e2 07 and $0x7,%edx
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 38 d0 cmp %dl,%al
31: 7f 04 jg 0x37
33: 84 c0 test %al,%al
35: 75 2c jne 0x63
37: 41 3a 6c 24 ff cmp -0x1(%r12),%bpl
3c: 74 ae je 0xffffffec
3e: 19 c0 sbb %eax,%eax