Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.15.0-syzkaller-11061-g7f9039c524a3 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__queue_work+0x9e/0xfe0 kernel/workqueue.c:2256 Code: 8b 1d de 93 11 11 31 ff 89 de e8 fd 95 35 00 85 db 0f 85 fc 0c 00 00 e8 b0 91 35 00 49 8d 97 c0 01 00 00 48 89 d5 48 c1 ed 03 <42> 0f b6 44 25 00 84 c0 48 89 54 24 08 0f 85 44 0d 00 00 8b 1a 89 RSP: 0018:ffffc900001d7428 EFLAGS: 00010002 RAX: ffffffff818ac930 RBX: 0000000000000000 RCX: 0000000000040000 RDX: 00000000000001c0 RSI: 00000000000001b0 RDI: 00000000000001b1 RBP: 0000000000000038 R08: ffff88803122bbf7 R09: 1ffff1100624577e R10: dffffc0000000000 R11: ffffed100624577f R12: dffffc0000000000 R13: ffff88803122bbf0 R14: 0000000000000008 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125d5e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000005b40 CR3: 00000000767ce000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000e18e000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: queue_work_on+0x181/0x270 kernel/workqueue.c:2392 __usb_hcd_giveback_urb+0x41a/0x690 drivers/usb/core/hcd.c:1650 dummy_timer+0x862/0x4550 drivers/usb/gadget/udc/dummy_hcd.c:1994 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x52c/0xc60 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842 handle_softirqs+0x283/0x870 kernel/softirq.c:579 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:164 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__queue_work+0x9e/0xfe0 kernel/workqueue.c:2256 Code: 8b 1d de 93 11 11 31 ff 89 de e8 fd 95 35 00 85 db 0f 85 fc 0c 00 00 e8 b0 91 35 00 49 8d 97 c0 01 00 00 48 89 d5 48 c1 ed 03 <42> 0f b6 44 25 00 84 c0 48 89 54 24 08 0f 85 44 0d 00 00 8b 1a 89 RSP: 0018:ffffc900001d7428 EFLAGS: 00010002 RAX: ffffffff818ac930 RBX: 0000000000000000 RCX: 0000000000040000 RDX: 00000000000001c0 RSI: 00000000000001b0 RDI: 00000000000001b1 RBP: 0000000000000038 R08: ffff88803122bbf7 R09: 1ffff1100624577e R10: dffffc0000000000 R11: ffffed100624577f R12: dffffc0000000000 R13: ffff88803122bbf0 R14: 0000000000000008 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125d5e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000005b40 CR3: 00000000767ce000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000e18e000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 1d de 93 11 11 mov 0x111193de(%rip),%ebx # 0x111193e4 6: 31 ff xor %edi,%edi 8: 89 de mov %ebx,%esi a: e8 fd 95 35 00 call 0x35960c f: 85 db test %ebx,%ebx 11: 0f 85 fc 0c 00 00 jne 0xd13 17: e8 b0 91 35 00 call 0x3591cc 1c: 49 8d 97 c0 01 00 00 lea 0x1c0(%r15),%rdx 23: 48 89 d5 mov %rdx,%rbp 26: 48 c1 ed 03 shr $0x3,%rbp * 2a: 42 0f b6 44 25 00 movzbl 0x0(%rbp,%r12,1),%eax <-- trapping instruction 30: 84 c0 test %al,%al 32: 48 89 54 24 08 mov %rdx,0x8(%rsp) 37: 0f 85 44 0d 00 00 jne 0xd81 3d: 8b 1a mov (%rdx),%ebx 3f: 89 .byte 0x89