general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.1.0-rc2-syzkaller-00078-g98555239e4c3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Workqueue: usb_hub_wq hub_event RIP: 0010:__skb_insert include/linux/skbuff.h:2167 [inline] RIP: 0010:__skb_queue_before include/linux/skbuff.h:2273 [inline] RIP: 0010:__skb_queue_tail include/linux/skbuff.h:2306 [inline] RIP: 0010:skb_queue_tail+0xb8/0x120 net/core/skbuff.c:3504 Code: dc a9 f9 4d 89 2f 49 bf 00 00 00 00 00 fc ff df 42 80 7c 3d 00 00 74 08 4c 89 f7 e8 62 dc a9 f9 49 89 1e 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 49 dc a9 f9 49 89 5d 00 49 83 c4 RSP: 0018:ffffc900000077c8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888025e49000 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc900000076a0 RBP: 1ffff11004976713 R08: dffffc0000000000 R09: fffff52000000ed4 R10: fffff52000000ed5 R11: 1ffff92000000ed4 R12: ffff888024bb3890 R13: 0000000000000000 R14: ffff888024bb3898 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb6958291c8 CR3: 000000007c6e1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hif_usb_regout_cb+0x12d/0x160 drivers/net/wireless/ath/ath9k/hif_usb.c:90 __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1671 dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x76a/0x980 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x277/0x75b kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:sysfs_unmerge_group+0x0/0x130 fs/sysfs/group.c:361 Code: fc ff ff 48 8d 7c 24 70 e8 ed a8 c6 ff 48 ba 00 00 00 00 00 fc ff df e9 5f fc ff ff e8 59 e3 2f 08 66 0f 1f 84 00 00 00 00 00 <41> 57 41 56 41 55 41 54 53 49 89 f7 48 89 fb 49 bd 00 00 00 00 00 RSP: 0018:ffffc900000c7380 EFLAGS: 00000293 RAX: ffffffff84f2572f RBX: 0000000000000006 RCX: ffff888012363a80 RDX: 0000000000000000 RSI: ffffffff8b245920 RDI: ffff888017f85010 RBP: ffffc900000c74a0 R08: ffffffff84f25726 R09: fffff52000018e65 R10: fffff52000018e65 R11: 1ffff92000018e64 R12: ffff888017f85010 R13: dffffc0000000000 R14: ffff888017f85010 R15: ffff888012363aac dpm_sysfs_remove+0x4e/0xb0 drivers/base/power/sysfs.c:833 device_del+0x2ed/0xbe0 drivers/base/core.c:3681 device_unregister+0x17/0xb0 drivers/base/core.c:3736 usb_remove_ep_devs+0x4c/0x80 drivers/usb/core/endpoint.c:188 remove_intf_ep_devs drivers/usb/core/message.c:1267 [inline] usb_disable_device+0x35a/0x820 drivers/usb/core/message.c:1418 usb_disconnect+0x346/0x890 drivers/usb/core/hub.c:2235 hub_port_connect+0x296/0x2910 drivers/usb/core/hub.c:5197 hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5497 port_event+0xec6/0x13b0 drivers/usb/core/hub.c:5653 hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5735 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__skb_insert include/linux/skbuff.h:2167 [inline] RIP: 0010:__skb_queue_before include/linux/skbuff.h:2273 [inline] RIP: 0010:__skb_queue_tail include/linux/skbuff.h:2306 [inline] RIP: 0010:skb_queue_tail+0xb8/0x120 net/core/skbuff.c:3504 Code: dc a9 f9 4d 89 2f 49 bf 00 00 00 00 00 fc ff df 42 80 7c 3d 00 00 74 08 4c 89 f7 e8 62 dc a9 f9 49 89 1e 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 49 dc a9 f9 49 89 5d 00 49 83 c4 RSP: 0018:ffffc900000077c8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff888025e49000 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc900000076a0 RBP: 1ffff11004976713 R08: dffffc0000000000 R09: fffff52000000ed4 R10: fffff52000000ed5 R11: 1ffff92000000ed4 R12: ffff888024bb3890 R13: 0000000000000000 R14: ffff888024bb3898 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb6958291c8 CR3: 000000007c6e1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: dc a9 f9 4d 89 2f fsubrl 0x2f894df9(%rcx) 6: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 d: fc ff df 10: 42 80 7c 3d 00 00 cmpb $0x0,0x0(%rbp,%r15,1) 16: 74 08 je 0x20 18: 4c 89 f7 mov %r14,%rdi 1b: e8 62 dc a9 f9 callq 0xf9a9dc82 20: 49 89 1e mov %rbx,(%r14) 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ef mov %r13,%rdi 34: e8 49 dc a9 f9 callq 0xf9a9dc82 39: 49 89 5d 00 mov %rbx,0x0(%r13) 3d: 49 rex.WB 3e: 83 .byte 0x83 3f: c4 .byte 0xc4