watchdog: BUG: soft lockup - CPU#0 stuck for 122s! [syz.3.73:6169] Modules linked in: irq event stamp: 15103991 hardirqs last enabled at (15103990): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (15103991): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (15097650): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (15097650): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (15097650): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (15097653): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (15097653): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (15097653): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6169 Comm: syz.3.73 Not tainted 6.14.0-syzkaller-g8582d9ab3efd #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd9/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 2b 00 74 08 4c 89 f7 e8 0d 9d fa f5 f6 44 24 21 02 75 55 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 f2 a8 5d f5 65 8b 05 db ad 35 07 85 c0 74 46 48 c7 04 24 0e 36 RSP: 0018:ffffc900000079a0 EFLAGS: 00000206 RAX: 9e69a72bf4911b00 RBX: 1ffff92000000f38 RCX: 0000000000000002 RDX: 0000000000000002 RSI: ffffffff8e69b349 RDI: 0000000000000001 RBP: ffffc90000007a30 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: 1ffff92000000f34 R13: dffffc0000000000 R14: ffffc900000079c0 R15: 0000000000000246 FS: 00007f4fcc84b6c0(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2f14e51176 CR3: 000000002e7a6000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __mod_timer+0xc45/0x10f0 kernel/time/timer.c:1181 call_timer_fn+0x189/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x66e/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xf9/0x1c0 kernel/sched/core.c:7090 Code: 89 fe 49 c1 ee 03 eb 0d 48 f7 03 08 00 00 00 0f 84 89 00 00 00 bf 01 00 00 00 e8 a2 35 5f f5 e8 ad f5 99 f5 fb bf 01 00 00 00 32 a5 ff ff 43 80 3c 26 00 74 08 4c 89 ff e8 13 2c fc f5 48 c7 RSP: 0018:ffffc9000ec375a0 EFLAGS: 00000282 RAX: 9e69a72bf4911b00 RBX: 1ffff92001d86ebc RCX: ffffffff81cb48ac RDX: 0000000000000000 RSI: ffffffff8e69b349 RDI: 0000000000000001 RBP: ffffc9000ec37650 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: dffffc0000000000 R13: 1ffff92001d86eb4 R14: 1ffff92001d86eb8 R15: ffffc9000ec375c0 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__rcu_read_unlock+0x56/0x110 kernel/rcu/tree_plugin.h:437 Code: c1 eb 03 42 0f b6 04 23 84 c0 75 6b 41 8b 6d 00 ff cd 42 0f b6 04 23 84 c0 75 76 41 89 6d 00 85 ed 75 21 4d 8d be 48 04 00 00 <4c> 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 88 00 00 00 41 83 RSP: 0018:ffffc9000ec37710 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff11005565448 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff8e4fc3ef RDI: ffffffff8ca1b0e0 RBP: 0000000000000000 R08: ffffc9000ec37c48 R09: 0000000000000000 R10: ffffc9000ec37870 R11: fffff52001d86f10 R12: dffffc0000000000 R13: ffff88802ab2a244 R14: ffff88802ab29e00 R15: ffff88802ab2a248 rcu_read_unlock include/linux/rcupdate.h:873 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x1aa4/0x23b0 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_noprof+0x1e1/0x390 mm/slub.c:4207 lsm_file_alloc security/security.c:733 [inline] security_file_alloc+0x32/0x310 security/security.c:2858 init_file+0x90/0x300 fs/file_table.c:156 alloc_empty_file+0x70/0x1d0 fs/file_table.c:238 alloc_file fs/file_table.c:351 [inline] alloc_file_pseudo+0x206/0x320 fs/file_table.c:380 sock_alloc_file+0xb7/0x2e0 net/socket.c:470 sock_map_fd net/socket.c:500 [inline] __sys_socket+0x1dc/0x3c0 net/socket.c:1692 __do_sys_socket net/socket.c:1697 [inline] __se_sys_socket net/socket.c:1695 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1695 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4fcb98e169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4fcc84b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f4fcbbb6080 RCX: 00007f4fcb98e169 RDX: 000000000000003a RSI: 0000000000000002 RDI: 000000000000000a RBP: 00007f4fcba10a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4fcbbb6080 R15: 00007fff70e306b8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6190 Comm: kworker/u9:6 Not tainted 6.14.0-syzkaller-g8582d9ab3efd #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: hci3 hci_cmd_timeout RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216 Code: 8b 3d d4 1c b6 0c 48 89 de 5b e9 63 b4 5e 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 90 68 93 65 8b 15 98 38 a5 11 81 e2 00 01 ff 00 RSP: 0018:ffffc90000a08d98 EFLAGS: 00000046 RAX: ffffffff81b0eb93 RBX: 0000000000000000 RCX: ffff888033709e00 RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a08e48 R08: ffffffff81b0eb7f R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920001411b4 R13: dffffc0000000000 R14: 0000000000000046 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffec12b9e0c CR3: 00000000274ce000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: arch_local_irq_restore arch/x86/include/asm/irqflags.h:158 [inline] seqcount_lockdep_reader_access+0x1c3/0x230 include/linux/seqlock.h:74 ktime_get_update_offsets_now+0x2d/0x3b0 kernel/time/timekeeping.c:2437 hrtimer_update_base kernel/time/hrtimer.c:642 [inline] hrtimer_interrupt+0x131/0xa40 kernel/time/hrtimer.c:1899 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline] RIP: 0010:vprintk_emit+0x731/0xa40 kernel/printk/printk.c:2449 Code: 00 e8 d3 3b 21 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 c1 3b 21 00 eb 06 e8 ba 3b 21 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 60 9b c1 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc900040af7a0 EFLAGS: 00000293 RAX: ffffffff81a21bc6 RBX: 0000000000000000 RCX: ffff888033709e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900040af8b0 R08: ffffffff81a21b9f R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: dffffc0000000000 R13: 1ffff92000815ef8 R14: ffffffff81a219f2 R15: ffffc900040af840 _printk+0xd5/0x120 kernel/printk/printk.c:2475 bt_err+0x126/0x180 net/bluetooth/lib.c:296 hci_cmd_timeout+0x104/0x1e0 net/bluetooth/hci_core.c:1457 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd50 kernel/workqueue.c:3400 kthread+0x7b7/0x940 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245