watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.2.993:9030] Modules linked in: irq event stamp: 19852213 hardirqs last enabled at (19852212): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (19852213): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (9423792): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (9423792): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (9423792): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (9423795): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (9423795): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (9423795): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 9030 Comm: syz.2.993 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:_raw_spin_lock_irqsave+0x1c/0x130 kernel/locking/spinlock.c:161 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 83 ec 60 49 89 fe <48> c7 c0 20 90 68 93 65 48 8b 00 48 89 44 24 40 49 bc 00 00 00 00 RSP: 0000:ffffc900000075e0 EFLAGS: 00000282 RAX: 0000000000012f90 RBX: ffff88802f1c79b8 RCX: 61c8864680b583eb RDX: 0000000000000005 RSI: ffffffff8e69b349 RDI: ffffffff9a9aebd8 RBP: ffffc90000007670 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: ffff88802f1c79a0 R13: 1ffff11005e38f34 R14: ffffffff9a9aebd8 R15: ffffffff9a9aebd0 FS: 00007f681be996c0(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f681be98f98 CR3: 000000002f862000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1088 [inline] debug_check_no_obj_freed+0x245/0x590 lib/debugobjects.c:1129 free_pages_prepare mm/page_alloc.c:1269 [inline] __free_frozen_pages+0x581/0x10a0 mm/page_alloc.c:2680 __folio_put+0x2b5/0x360 mm/swap.c:112 skb_page_unref include/linux/skbuff_ref.h:43 [inline] __skb_frag_unref include/linux/skbuff_ref.h:56 [inline] skb_release_data+0x486/0x8b0 net/core/skbuff.c:1091 skb_release_all net/core/skbuff.c:1162 [inline] __kfree_skb+0x55/0x70 net/core/skbuff.c:1176 tcp_write_queue_purge+0x136/0x2f0 net/ipv4/tcp.c:3288 tcp_done_with_error+0x41/0xc0 net/ipv4/tcp_input.c:4545 tcp_write_err net/ipv4/tcp_timer.c:77 [inline] tcp_write_timeout net/ipv4/tcp_timer.c:294 [inline] tcp_retransmit_timer+0x1589/0x32c0 net/ipv4/tcp_timer.c:600 tcp_write_timer+0x166/0x2e0 net/ipv4/tcp_timer.c:738 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: 0000:ffffc90002ed7dc0 EFLAGS: 00000286 RAX: 20534595bbac4800 RBX: 1ffff920005dafc0 RCX: ffffffff81cb48ac RDX: 0000000000000000 RSI: ffffffff8e69b349 RDI: 0000000000000001 RBP: ffffc90002ed7e70 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: dffffc0000000000 R13: 1ffff920005dafb8 R14: 1ffff920005dafbc R15: ffffc90002ed7de0 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:exit_to_user_mode_loop kernel/entry/common.c:101 [inline] RIP: 0010:exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] RIP: 0010:irqentry_exit_to_user_mode+0x57/0x250 kernel/entry/common.c:231 Code: cd 01 00 00 e8 ba 10 00 00 65 4c 8b 3c 25 08 90 68 93 49 8b 1f f7 c3 1e 30 02 00 0f 84 b2 00 00 00 e8 0d 1b 9b f5 fb f6 c3 18 <74> 05 e8 e2 1c 01 00 f7 c3 00 10 00 00 74 08 4c 89 f7 e8 b2 fe ca RSP: 0000:ffffc90002ed7f30 EFLAGS: 00000202 RAX: 20534595bbac4800 RBX: 000000000000000a RCX: ffffffff81cb48ac RDX: 0000000000000000 RSI: ffffffff8e69b349 RDI: ffffffff8ca1b0e0 RBP: 0000000000000000 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: 0000000000000000 R13: 0000000000000000 R14: ffffc90002ed7f58 R15: ffff888020793c00 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x7f681af8d169 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:00007f681be990e8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 00007f681b1a5fa8 RCX: 00007f681af8d169 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f681b1a5fac RBP: 00007f681b1a5fa0 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f681b1a5fac R13: 0000000000000000 R14: 00007ffcf7dc67c0 R15: 00007ffcf7dc68a8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5859 Comm: kworker/u9:6 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: hci15 hci_cmd_timeout RIP: 0010:format_decode+0x9ea/0xcb0 lib/vsprintf.c:2617 Code: 14 24 e9 4d f8 ff ff 89 e9 80 e1 07 38 c1 0f 8c 54 f8 ff ff be 04 00 00 00 48 89 ef e8 7f 70 01 f6 48 8b 14 24 e9 3e f8 ff ff <44> 89 e9 80 e1 07 38 c1 0f 8c 43 f8 ff ff 4c 89 ef e8 60 6e 01 f6 RSP: 0018:ffffc900045a6e80 EFLAGS: 00000206 RAX: 0000000000000005 RBX: ffffffff8d774810 RCX: ffff8880356c3c00 RDX: ffffc900045a6f84 RSI: 0000000000000016 RDI: 0000000000000011 RBP: ffffc900045a6f87 R08: ffffffff8c2c077f R09: ffffffff8c2c06d3 R10: 0000000000000002 R11: ffff8880356c3c00 R12: 1ffffffff1896d69 R13: ffffffff8c4b6b48 R14: ffffffff8c4b6b48 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b248d7d60 CR3: 0000000027a2c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: vsnprintf+0x179/0x1230 lib/vsprintf.c:2795 sprintf+0xdc/0x130 lib/vsprintf.c:3015 print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x16d/0x310 kernel/printk/printk.c:1407 record_print_text+0x14a/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x65b/0x8b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x56b/0xec0 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0x151/0x3b0 kernel/printk/printk.c:3325 vprintk_emit+0x761/0xa40 kernel/printk/printk.c:2450 _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