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usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0
WARNING: CPU: 0 PID: 3558 at drivers/usb/gadget/udc/core.c:108 usb_ep_enable+0x25f/0x440 drivers/usb/gadget/udc/core.c:107
Modules linked in:
CPU: 0 PID: 3558 Comm: udevd 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:ffffc900000076a8 EFLAGS: 00010046
RAX: 92a9848c56dafc00 RBX: ffff8881474d40e0 RCX: ffff88807cf70000
RDX: 0000000000000100 RSI: 0000000000000103 RDI: 0000000000000000
RBP: 0000000000000081 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: dffffc0000000000
R13: ffff8881474d410d R14: ffff8881474d40e8 R15: ffff88801f8664ba
FS:  00007f63b5b18880(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad71a96ff8 CR3: 000000007d3f2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:52 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0xfb3/0x1cf0 arch/x86/kernel/unwind_orc.c:448
Code: 89 37 e9 33 01 00 00 49 89 f4 48 89 f5 4c 89 e8 48 29 e8 48 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 7c 45 00 <4c> 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84
RSP: 0018:ffffc90002e8f8d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90002e8f968 RCX: 0000000000000000
RDX: ffffffff8e0f8cb4 RSI: ffffffff8da067d8 RDI: ffffffff81350ed7
RBP: ffffffff8da067d8 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: fffff520005d1f39 R12: ffffffff8da067d8
R13: ffffffff8da067d8 R14: ffffffff81bd741b R15: ffffffff8da067d8
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x92/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x15d/0x280 mm/slub.c:3238
 getname_flags+0xb7/0x4f0 fs/namei.c:138
 user_path_at_empty+0x2a/0x190 fs/namei.c:2890
 do_readlinkat+0xd9/0x490 fs/stat.c:442
 __do_sys_readlink fs/stat.c:475 [inline]
 __se_sys_readlink fs/stat.c:472 [inline]
 __x64_sys_readlink+0x7b/0x90 fs/stat.c:472
 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: 0033:0x7f63b5c743a7
Code: 00 00 90 48 83 ec 10 48 63 ff 45 31 c9 45 31 c0 6a 00 31 c9 e8 8a 20 f9 ff 48 83 c4 18 c3 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 21 ba 0d 00 f7 d8 64 89 02 48
RSP: 002b:00007ffd10fb55e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007ffd10fb5ac0 RCX: 00007f63b5c743a7
RDX: 0000000000000400 RSI: 00007ffd10fb55f0 RDI: 00007ffd10fb5ac0
RBP: 00007ffd10fb55f0 R08: 0000565498787eb4 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
R13: 00000000000000ff R14: 0000565468d21be0 R15: 00007ffd10fb6590
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 37                	mov    %esi,(%rdi)
   2:	e9 33 01 00 00       	jmp    0x13a
   7:	49 89 f4             	mov    %rsi,%r12
   a:	48 89 f5             	mov    %rsi,%rbp
   d:	4c 89 e8             	mov    %r13,%rax
  10:	48 29 e8             	sub    %rbp,%rax
  13:	48 89 c1             	mov    %rax,%rcx
  16:	48 c1 f9 02          	sar    $0x2,%rcx
  1a:	48 c1 e8 3f          	shr    $0x3f,%rax
  1e:	48 01 c8             	add    %rcx,%rax
  21:	48 83 e0 fe          	and    $0xfffffffffffffffe,%rax
  25:	4c 8d 7c 45 00       	lea    0x0(%rbp,%rax,2),%r15
* 2a:	4c 89 f8             	mov    %r15,%rax <-- trapping instruction
  2d:	48 c1 e8 03          	shr    $0x3,%rax
  31:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  38:	fc ff df
  3b:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax
  3f:	84                   	.byte 0x84