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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 1 PID: 4333 at drivers/usb/gadget/udc/core.c:108 usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Modules linked in:
CPU: 1 PID: 4333 Comm: syz.3.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Code: 49 8b 0e 48 c7 c0 80 27 d5 8a 49 c7 c0 a0 27 d5 8a 4c 0f 44 c0 48 c7 c7 40 27 d5 8a 48 c7 c6 1d 96 e1 8b 89 ea e8 c1 94 7f 03 <0f> 0b e9 e1 fe ff ff e8 95 67 43 fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000dd06a8 EFLAGS: 00010046
RAX: e93b1dc549d7b000 RBX: ffff8881482900e0 RCX: ffff88807b3cbb80
RDX: 0000000000000100 RSI: 0000000000000103 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b912795b R09: 1ffff11017224f2b
R10: dffffc0000000000 R11: ffffed1017224f2c R12: dffffc0000000000
R13: ffff88814829010d R14: ffff8881482900e8 R15: ffff88802411bf3a
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000039000 CR3: 000000002afeb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hidg_set_alt+0x126/0xa00 drivers/usb/gadget/function/f_hid.c:822
set_config+0x734/0xfa0 drivers/usb/gadget/composite.c:972
composite_setup+0x1999/0x2b60 drivers/usb/gadget/composite.c:1878
configfs_composite_setup+0xc3/0x100 drivers/usb/gadget/configfs.c:1492
dummy_timer+0x1338/0x33c0 drivers/usb/gadget/udc/dummy_hcd.c:1930
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x56c/0x810 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__kasan_check_write+0x0/0x10 mm/kasan/shadow.c:37
Code: 8b eb 0a 48 c7 c7 2c a1 c5 8b 48 89 de e8 38 51 f7 07 31 ed eb d7 00 00 cc cc 89 f6 48 8b 0c 24 31 d2 e9 43 ef ff ff 0f 1f 00 <89> f6 48 8b 0c 24 ba 01 00 00 00 e9 30 ef ff ff 55 41 56 53 48 89
RSP: 0018:ffffc9000386f458 EFLAGS: 00000256
RAX: 00000000ffffff01 RBX: ffff88801ef1ca20 RCX: ffffffff815e2ef9
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc9000386f4a0
RBP: ffffc9000386f510 R08: ffff88801ef1ca23 R09: 1ffff11003de3944
R10: dffffc0000000000 R11: ffffed1003de3945 R12: 1ffff9200070de90
R13: ffff88801ef1ca28 R14: dffffc0000000000 R15: 1ffff11003de3945
instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:512 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
do_raw_spin_lock+0x128/0x2f0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:364 [inline]
zap_pte_range mm/memory.c:1342 [inline]
zap_pmd_range mm/memory.c:1505 [inline]
zap_pud_range mm/memory.c:1534 [inline]
zap_p4d_range mm/memory.c:1555 [inline]
unmap_page_range+0x928/0x2410 mm/memory.c:1576
unmap_vmas+0x131/0x250 mm/memory.c:1653
exit_mmap+0x3b9/0x640 mm/mmap.c:3216
__mmput+0x115/0x390 kernel/fork.c:1128
exit_mm+0x632/0x7b0 kernel/exit.c:557
do_exit+0x5b8/0x2110 kernel/exit.c:877
do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
get_signal+0x7eb/0x12e0 kernel/signal.c:2909
arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f50ca16f0d9
Code: Unable to access opcode bytes at RIP 0x7f50ca16f0af.
RSP: 002b:00007f50c83c70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f50ca3f6fa8 RCX: 00007f50ca16f0d9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f50ca3f6fa8
RBP: 00007f50ca3f6fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f50ca3f7038 R14: 00007ffebc7a3d50 R15: 00007ffebc7a3e38
----------------
Code disassembly (best guess), 1 bytes skipped:
0: eb 0a jmp 0xc
2: 48 c7 c7 2c a1 c5 8b mov $0xffffffff8bc5a12c,%rdi
9: 48 89 de mov %rbx,%rsi
c: e8 38 51 f7 07 call 0x7f75149
11: 31 ed xor %ebp,%ebp
13: eb d7 jmp 0xffffffec
15: 00 00 add %al,(%rax)
17: cc int3
18: cc int3
19: 89 f6 mov %esi,%esi
1b: 48 8b 0c 24 mov (%rsp),%rcx
1f: 31 d2 xor %edx,%edx
21: e9 43 ef ff ff jmp 0xffffef69
26: 0f 1f 00 nopl (%rax)
* 29: 89 f6 mov %esi,%esi <-- trapping instruction
2b: 48 8b 0c 24 mov (%rsp),%rcx
2f: ba 01 00 00 00 mov $0x1,%edx
34: e9 30 ef ff ff jmp 0xffffef69
39: 55 push %rbp
3a: 41 56 push %r14
3c: 53 push %rbx
3d: 48 rex.W
3e: 89 .byte 0x89