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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 1 PID: 4187 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: 4187 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Code: 49 8b 0e 48 c7 c0 e0 e8 d5 8a 49 c7 c0 00 e9 d5 8a 4c 0f 44 c0 48 c7 c7 a0 e8 d5 8a 48 c7 c6 b8 ee e3 8b 89 ea e8 41 a7 82 03 <0f> 0b e9 e1 fe ff ff e8 c5 00 3e fb 49 bc 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000dd0688 EFLAGS: 00010046
RAX: d8e81d5440c5d800 RBX: ffff8881477440e0 RCX: ffff888063158000
RDX: 0000000000000100 RSI: 0000000080000102 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b8f2795b R09: 1ffff110171e4f2b
R10: dffffc0000000000 R11: ffffed10171e4f2c R12: dffffc0000000000
R13: ffff88814774410d R14: ffff8881477440e8 R15: ffff88802603b03a
FS: 000055556676b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32fe66 CR3: 00000000633cf000 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+0x1338/0x34a0 drivers/usb/gadget/udc/dummy_hcd.c:1944
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:free_unref_page_list+0x7ad/0x830 mm/page_alloc.c:3479
Code: 24 80 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 42 c6 44 28 08 f8 75 53 f7 c3 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <48> 8b 44 24 08 4a c7 04 28 00 00 00 00 4a c7 44 28 08 00 00 00 00
RSP: 0018:ffffc90002f5f6e0 EFLAGS: 00000206
RAX: 1ffff920005ebee4 RBX: 0000000000000246 RCX: d8e81d5440c5d800
RDX: dffffc0000000000 RSI: ffffffff8a2b2b60 RDI: ffffffff8a7a4bc0
RBP: ffffc90002f5f810 R08: ffffffff9104615f R09: 1ffffffff2208c2b
R10: dffffc0000000000 R11: fffffbfff2208c2c R12: ffffc90002f5f8a0
R13: dffffc0000000000 R14: ffffffff8be63828 R15: ffffc90002f5f8a0
release_pages+0x185f/0x1bd0 mm/swap.c:963
__pagevec_release+0x6d/0xe0 mm/swap.c:983
pagevec_release include/linux/pagevec.h:81 [inline]
shmem_undo_range+0x5cd/0x19a0 mm/shmem.c:964
shmem_truncate_range mm/shmem.c:1063 [inline]
shmem_evict_inode+0x1e2/0x9a0 mm/shmem.c:1145
evict+0x4b6/0x8b0 fs/inode.c:647
do_unlinkat+0x3e7/0x710 fs/namei.c:4406
__do_sys_unlink fs/namei.c:4447 [inline]
__se_sys_unlink fs/namei.c:4445 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4445
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f400ced5647
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd1b590368 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f400ced5647
RDX: 00007ffd1b590390 RSI: 00007ffd1b590420 RDI: 00007ffd1b590420
RBP: 00007ffd1b590420 R08: 00007ffd1b591420 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd1b5914b0
R13: 00007f400cf6cf63 R14: 00000000000289a6 R15: 00007ffd1b5914f0
----------------
Code disassembly (best guess):
0: 24 80 and $0x80,%al
2: 00 00 add %al,(%rax)
4: 00 f7 add %dh,%bh
6: 84 24 80 test %ah,(%rax,%rax,4)
9: 00 00 add %al,(%rax)
b: 00 00 add %al,(%rax)
d: 02 00 add (%rax),%al
f: 00 42 c6 add %al,-0x3a(%rdx)
12: 44 28 08 sub %r9b,(%rax)
15: f8 clc
16: 75 53 jne 0x6b
18: f7 c3 00 02 00 00 test $0x200,%ebx
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 48 8b 44 24 08 mov 0x8(%rsp),%rax <-- trapping instruction
2f: 4a c7 04 28 00 00 00 movq $0x0,(%rax,%r13,1)
36: 00
37: 4a c7 44 28 08 00 00 movq $0x0,0x8(%rax,%r13,1)
3e: 00 00