rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2653 jiffies s: 1621 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 NMI backtrace for cpu 0 CPU: 0 PID: 786 Comm: kworker/0:2 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events nsim_dev_trap_report_work RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3762 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3782 [inline] RIP: 0010:validate_chain+0x1b9/0x5900 kernel/locking/lockdep.c:3837 Code: b8 eb 83 b5 80 46 86 c8 61 49 0f af c6 48 c1 e8 2f 48 8d 1c c5 00 b5 e6 92 48 89 d8 48 c1 e8 03 48 89 44 24 68 42 80 3c 20 00 <74> 08 48 89 df e8 6d d2 88 00 48 89 5c 24 48 48 8b 1b 48 85 db 74 RSP: 0018:ffffc90000006100 EFLAGS: 00000046 RAX: 1ffffffff25e77e6 RBX: ffffffff92f3bf30 RCX: ffffffff8173185e RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92fab580 RBP: ffffc90000006400 R08: ffffffff92fab587 R09: 1ffffffff25f56b0 R10: dffffc0000000000 R11: fffffbfff25f56b1 R12: dffffc0000000000 R13: ffff88801fc92a18 R14: 8fc02b80d294c0ee R15: ffff88801fc91e00 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020068000 CR3: 0000000023496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 console_lock_spinning_enable kernel/printk/printk.c:1870 [inline] console_emit_next_record kernel/printk/printk.c:2922 [inline] console_flush_all+0x810/0xfd0 kernel/printk/printk.c:2994 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4951 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4962 _dev_err+0x122/0x170 drivers/base/core.c:5017 wdm_int_callback+0x41f/0xac0 drivers/usb/class/cdc-wdm.c:269 __usb_hcd_giveback_urb+0x373/0x530 drivers/usb/core/hcd.c:1648 dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:kasan_save_stack mm/kasan/common.c:48 [inline] RIP: 0010:kasan_save_track+0x4c/0x80 mm/kasan/common.c:68 Code: 00 02 00 00 4c 89 ff 31 f6 e8 50 0f 8b 09 4c 89 ff be 40 00 00 00 31 d2 e8 71 2d 86 ff 4c 89 ff 89 c6 44 89 f2 b9 01 00 00 00 7f 1a ed 02 65 48 8b 0c 25 00 d5 03 00 8b 89 c8 05 00 00 89 0b RSP: 0018:ffffc900000074b0 EFLAGS: 00000246 RAX: 000000000000001d RBX: ffff8880602bb148 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 000000000000001d RDI: ffffc900000074b0 RBP: ffffc900000076d8 R08: ffffffff81410b73 R09: ffffffff8140f6b2 R10: 0000000000000002 R11: ffff88801fc91e00 R12: ffffea000180aec0 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900000074b0 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2196 [inline] slab_free mm/slub.c:4437 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4512 __netif_receive_skb_core+0x3cc5/0x4420 net/core/dev.c:5599 __netif_receive_skb_one_core net/core/dev.c:5623 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5739 process_backlog+0x391/0x7d0 net/core/dev.c:6068 __napi_poll+0xcb/0x490 net/core/dev.c:6722 napi_poll net/core/dev.c:6791 [inline] net_rx_action+0x7bb/0x10a0 net/core/dev.c:6907 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:211 [inline] RIP: 0010:unwind_next_frame+0x23b/0x2a00 arch/x86/kernel/unwind_orc.c:494 Code: c1 ed 08 48 c7 c0 60 5c d4 90 48 c7 c1 64 5c ff 90 48 29 c1 48 c1 e9 02 45 31 ed 80 3d 6d dd 9a 0c 00 44 0f 45 e9 41 8d 5d ff <89> df 89 ee e8 8c 36 55 00 39 eb 0f 86 02 1e 00 00 89 e8 48 8d 1c RSP: 0018:ffffc900037874a8 EFLAGS: 00000202 RAX: ffffffff90d45c60 RBX: 00000000000ac000 RCX: 00000000000ac001 RDX: ffffc900037875b5 RSI: ffffffff8bc00000 RDI: ffffffff81610c9b RBP: 000000000000610c R08: ffffffff8140f1df R09: ffffc90003787670 R10: 0000000000000003 R11: ffffffff8181e050 R12: ffffc90003787580 R13: 00000000000ac001 R14: ffffffff8bc00000 R15: ffffffff81610c9c arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4122 [inline] kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4142 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:597 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:666 alloc_skb include/linux/skbuff.h:1308 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x254/0xaa0 drivers/net/netdevsim/dev.c:850 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes cdc_wdm 3-1:1.0: nonzero urb status received: -71 cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes