watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.4:5630] Modules linked in: CPU: 1 PID: 5630 Comm: syz-executor.4 Not tainted 5.10.186-syzkaller-01315-g59b65efafe20 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline] RIP: 0010:smp_call_function_single+0x276/0x510 kernel/smp.c:517 Code: 84 c0 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 ca e7 0a 00 41 83 e5 01 75 0a e8 0f e4 0a 00 e9 eb 00 00 00 90 42 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd RSP: 0018:ffffc900071bf4c0 EFLAGS: 00000293 RAX: ffffffff815fa3f4 RBX: 1ffff92000e37ea1 RCX: ffff88810f8c2780 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900071bf5b0 R08: ffffffff815fa3c6 R09: ffffed103ee0aec9 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc900071bf508 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000d8d000 CR3: 000000000660f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many_cond+0x94e/0xa30 kernel/smp.c:653 smp_call_function_many+0x30/0x40 kernel/smp.c:716 native_flush_tlb_others+0x13c/0x230 arch/x86/mm/tlb.c:819 __flush_tlb_others arch/x86/include/asm/paravirt.h:74 [inline] flush_tlb_others arch/x86/mm/tlb.c:829 [inline] flush_tlb_mm_range+0x221/0x2c0 arch/x86/mm/tlb.c:916 tlb_flush arch/x86/include/asm/tlb.h:24 [inline] tlb_flush_mmu_tlbonly+0x1b7/0x420 include/asm-generic/tlb.h:428 tlb_flush_mmu mm/mmu_gather.c:246 [inline] tlb_finish_mmu+0xd4/0x320 mm/mmu_gather.c:326 exit_mmap+0x312/0x5c0 mm/mmap.c:3352 __mmput+0x95/0x2d0 kernel/fork.c:1145 mmput+0x59/0x170 kernel/fork.c:1168 exit_mm kernel/exit.c:537 [inline] do_exit+0xbda/0x2a50 kernel/exit.c:848 do_group_exit+0x141/0x310 kernel/exit.c:983 get_signal+0x10a0/0x1410 kernel/signal.c:2782 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0xbc/0x1d0 kernel/entry/common.c:274 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fa01494905a Code: Unable to access opcode bytes at RIP 0x7fa014949030. RSP: 002b:00007ffcbb6736f0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 0000000000000440 RCX: 00007fa01494905a RDX: 00007ffcbb673730 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffcbb6737bc R08: 00007ffcbb735080 R09: 00007ffcbb7350b0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 000000000007d2bc R14: 0000000000000008 R15: 00007ffcbb673820 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10191 Comm: kworker/0:15 Not tainted 5.10.186-syzkaller-01315-g59b65efafe20 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_hcd_flush_endpoint+0xab/0x290 drivers/usb/core/hcd.c:1793 Code: 00 4d 39 e7 0f 84 f4 00 00 00 4c 89 6d d0 4d 8d 6f ec 4c 89 e8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 a9 00 00 00 41 8b 5d 00 <31> ff 89 de e8 4c de 60 fe 85 db 74 31 49 83 c7 08 4c 89 f8 48 c1 RSP: 0018:ffffc90008b07550 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 00000000ffffff94 RCX: 0000000000040000 RDX: ffffc900069c3000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90008b07590 R08: ffffffff8309ad44 R09: 0000000000000003 R10: fffff52001160e98 R11: dffffc0000000001 R12: ffff88810cd96018 R13: ffff88813c929c04 R14: dffffc0000000000 R15: ffff88813c929c18 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa013655718 CR3: 0000000115c0a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: usb_disable_endpoint drivers/usb/core/message.c:1300 [inline] usb_disable_interface+0x1e9/0x2c0 drivers/usb/core/message.c:1346 usb_unbind_interface+0x1d5/0x8c0 drivers/usb/core/driver.c:457 device_release_driver_internal+0x506/0x7c0 drivers/base/dd.c:1221 device_release_driver+0x19/0x20 drivers/base/dd.c:1244 bus_remove_device+0x2f8/0x360 drivers/base/bus.c:533 device_del+0x68b/0xf00 drivers/base/core.c:3434 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1416 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2229 hub_port_connect drivers/usb/core/hub.c:5173 [inline] hub_port_connect_change drivers/usb/core/hub.c:5478 [inline] port_event drivers/usb/core/hub.c:5628 [inline] hub_event+0x1ccf/0x4a20 drivers/usb/core/hub.c:5710 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2298 worker_thread+0xaea/0x1510 kernel/workqueue.c:2444 kthread+0x34b/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 :299