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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 4363 at drivers/usb/gadget/udc/core.c:125 usb_ep_enable+0x27c/0x4d0 drivers/usb/gadget/udc/core.c:124
Modules linked in:
CPU: 0 PID: 4363 Comm: kworker/0:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: rcu_gp wait_rcu_exp_gp
RIP: 0010:usb_ep_enable+0x27c/0x4d0 drivers/usb/gadget/udc/core.c:124
Code: 49 8b 0e 48 c7 c0 80 08 5e 8b 49 c7 c0 a0 08 5e 8b 4c 0f 44 c0 48 c7 c7 40 08 5e 8b 48 c7 c6 a9 84 85 8c 89 ea e8 e4 b3 d2 fa <0f> 0b e9 c4 fe ff ff e8 18 52 07 fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000007768 EFLAGS: 00010046
RAX: 69ba8e01f46c9d00 RBX: ffff888142fa40e0 RCX: ffff88802d4cda00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000081 R08: ffff8880b8c279db R09: 1ffff11017184f3b
R10: dffffc0000000000 R11: ffffed1017184f3c R12: dffffc0000000000
R13: ffff888142fa410d R14: ffff888142fa40e8 R15: ffff88807c97fb3a
FS: 0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe2c417cac CR3: 0000000056b4c000 CR4: 00000000003506f0
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:823
set_config+0x6e8/0xf70 drivers/usb/gadget/composite.c:986
composite_setup+0x194c/0x2b00 drivers/usb/gadget/composite.c:1893
configfs_composite_setup+0xc3/0x100 drivers/usb/gadget/configfs.c:1484
dummy_timer+0x12ed/0x35d0 drivers/usb/gadget/udc/dummy_hcd.c:1954
__run_hrtimer kernel/time/hrtimer.c:1751 [inline]
__hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
handle_softirqs+0x291/0x910 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:rcu_report_exp_cpu_mult+0x0/0x300 kernel/rcu/tree_exp.h:233
Code: 00 31 c0 c3 48 c7 c1 50 42 22 8f 80 e1 07 80 c1 03 38 c1 7c e2 48 c7 c7 50 42 22 8f e8 89 c3 65 00 eb d4 0f 1f 80 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 30 89 54 24 0c 49 89 f7 49
RSP: 0018:ffffc900044a7ad8 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 1ffffffff1b66693 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffffffff8db33040
RBP: ffffc900044a7c30 R08: ffffffff91b62267 R09: 1ffffffff236c44c
R10: dffffc0000000000 R11: fffffbfff236c44d R12: ffffffff8db33040
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8db33040
sync_rcu_exp_select_cpus kernel/rcu/tree_exp.h:557 [inline]
rcu_exp_sel_wait_wake+0x22f/0x1d50 kernel/rcu/tree_exp.h:730
process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 00 31 add %dh,(%rcx)
2: c0 c3 48 rol $0x48,%bl
5: c7 c1 50 42 22 8f mov $0x8f224250,%ecx
b: 80 e1 07 and $0x7,%cl
e: 80 c1 03 add $0x3,%cl
11: 38 c1 cmp %al,%cl
13: 7c e2 jl 0xfffffff7
15: 48 c7 c7 50 42 22 8f mov $0xffffffff8f224250,%rdi
1c: e8 89 c3 65 00 call 0x65c3aa
21: eb d4 jmp 0xfffffff7
23: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
* 2a: 55 push %rbp <-- trapping instruction
2b: 41 57 push %r15
2d: 41 56 push %r14
2f: 41 55 push %r13
31: 41 54 push %r12
33: 53 push %rbx
34: 48 83 ec 30 sub $0x30,%rsp
38: 89 54 24 0c mov %edx,0xc(%rsp)
3c: 49 89 f7 mov %rsi,%r15
3f: 49 rex.WB