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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: drivers/usb/gadget/udc/core.c:124 at usb_ep_enable+0x3e6/0x490 drivers/usb/gadget/udc/core.c:124, CPU#0: syz-executor/7500
Modules linked in:
CPU: 0 UID: 0 PID: 7500 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:usb_ep_enable+0x3f8/0x490 drivers/usb/gadget/udc/core.c:124
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 93 00 00 00 48 8d 3d 3a b7 85 0a 48 8b 4b 08 40 0f b6 d5 4d 89 e0 48 c7 c6 00 b9 fb 8c <67> 48 0f b9 3a bd ea ff ff ff e9 8e fd ff ff 49 c7 c4 a0 ab fb 8c
RSP: 0018:ffffc90000007a10 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: ffff88802371c0e0 RCX: ffffffff8cfbf000
RDX: 0000000000000081 RSI: ffffffff8cfbb900 RDI: ffffffff92785eb0
RBP: 0000000000000081 R08: ffffffff8cfbabe0 R09: 0000000000000000
R10: ffffffff926adb5f R11: 0000000000000000 R12: ffffffff8cfbabe0
R13: 0000000000000000 R14: ffff88802371c0e0 R15: ffff88802b737ba0
FS: 0000555567d63500(0000) GS:ffff888122477000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bb4f3b000 CR3: 00000000779c6000 CR4: 0000000000350ef0
Call Trace:
hidg_set_alt+0x190/0xa10 drivers/usb/gadget/function/f_hid.c:1042
set_config drivers/usb/gadget/composite.c:1018 [inline]
composite_setup+0x2ccf/0x9290 drivers/usb/gadget/composite.c:1901
configfs_composite_setup+0xfb/0x130 drivers/usb/gadget/configfs.c:1877
dummy_timer+0x20a0/0x3840 drivers/usb/gadget/udc/dummy_hcd.c:1983
__run_hrtimer kernel/time/hrtimer.c:2079 [inline]
__hrtimer_run_queues+0x448/0x9a0 kernel/time/hrtimer.c:2136
hrtimer_run_softirq+0x1ca/0x360 kernel/time/hrtimer.c:2153
handle_softirqs+0x216/0xa20 kernel/softirq.c:669
__do_softirq kernel/softirq.c:703 [inline]
invoke_softirq kernel/softirq.c:542 [inline]
__irq_exit_rcu+0x178/0x220 kernel/softirq.c:786
irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:const_folio_flags include/linux/page-flags.h:340 [inline]
RIP: 0010:folio_test_private_2 include/linux/page-flags.h:587 [inline]
RIP: 0010:folio_has_private include/linux/page-flags.h:1236 [inline]
RIP: 0010:folio_needs_release mm/internal.h:687 [inline]
RIP: 0010:truncate_cleanup_folio+0x441/0x790 mm/truncate.c:159
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a3 02 00 00 4c 8b 6b 08 31 ff 41 83 e5 01 4c 89 ee e8 72 3d b5 ff 4d 85 ed <0f> 85 0c 02 00 00 e8 c4 42 b5 ff be 08 00 00 00 48 89 df e8 c7 90
RSP: 0018:ffffc90004227710 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0001d1cf00 RCX: ffff88802c8d9f40
RDX: 0000000000000000 RSI: ffffffff8259110e RDI: 0000000000000007
RBP: ffff8880546164e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffea0001d1cf07 R11: 0000000000000001 R12: ffffea0001d1cf08
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
truncate_inode_folio+0x3f/0x70 mm/truncate.c:175
shmem_undo_range+0x3b8/0x1440 mm/shmem.c:1367
shmem_truncate_range mm/shmem.c:1496 [inline]
shmem_evict_inode+0x3b1/0xc40 mm/shmem.c:1627
evict+0x3c2/0xad0 fs/inode.c:821
iput_final fs/inode.c:2025 [inline]
iput.part.0+0x989/0x1050 fs/inode.c:2074
iput+0x30/0x40 fs/inode.c:2040
filename_unlinkat+0x466/0x770 fs/namei.c:5741
__do_sys_unlink fs/namei.c:5772 [inline]
__se_sys_unlink fs/namei.c:5769 [inline]
__x64_sys_unlink+0x46/0x70 fs/namei.c:5769
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcbafd9ec07
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:00007ffef2532438 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcbafd9ec07
RDX: 00007ffef2532460 RSI: 00007ffef25324f0 RDI: 00007ffef25324f0
RBP: 00007ffef25324f0 R08: 00007ffef25334f0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffef2533580
R13: 00007fcbafe36fb3 R14: 0000000000075406 R15: 00007ffef25335c0
----------------
Code disassembly (best guess):
0: 48 89 fa mov %rdi,%rdx
3: 48 c1 ea 03 shr $0x3,%rdx
7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
b: 0f 85 93 00 00 00 jne 0xa4
11: 48 8d 3d 3a b7 85 0a lea 0xa85b73a(%rip),%rdi # 0xa85b752
18: 48 8b 4b 08 mov 0x8(%rbx),%rcx
1c: 40 0f b6 d5 movzbl %bpl,%edx
20: 4d 89 e0 mov %r12,%r8
23: 48 c7 c6 00 b9 fb 8c mov $0xffffffff8cfbb900,%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: bd ea ff ff ff mov $0xffffffea,%ebp
34: e9 8e fd ff ff jmp 0xfffffdc7
39: 49 c7 c4 a0 ab fb 8c mov $0xffffffff8cfbaba0,%r12