watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.2.4166:18266] Modules linked in: irq event stamp: 6639604 hardirqs last enabled at (6639603): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (6639604): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (6639544): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (6639544): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (6639544): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (6639279): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (6639279): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (6639279): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 18266 Comm: syz.2.4166 Not tainted 6.11.0-rc4-syzkaller-g7559a7a84ef8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:122 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:431 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x758/0xdb0 kernel/locking/qspinlock.c:508 Code: 85 a3 01 00 00 48 8b 44 24 28 c6 00 00 48 8b 44 24 10 42 0f b6 04 28 84 c0 0f 85 a8 01 00 00 41 c6 04 24 01 41 bc 00 80 ff ff <42> 0f b6 04 2b 84 c0 75 6c 66 c7 84 24 b0 00 00 00 00 01 48 8b 44 RSP: 0018:ffffc9000b8f7860 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 1ffff9200171ef22 RCX: ffffc9000b8f7901 RDX: ffffc9001315e000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9000b8f7998 R08: ffffffff9373487f R09: 1ffffffff26e690f R10: dffffc0000000000 R11: fffffbfff26e6910 R12: 00000000ffffcd4b R13: dffffc0000000000 R14: ffff88801dcd59a8 R15: ffffc9000b8f7920 FS: 00007ff570ec16c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac9c6e2f98 CR3: 000000006937a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] lock_for_kill+0xdc/0x210 fs/dcache.c:660 dput+0x18a/0x2b0 fs/dcache.c:850 __fput+0x5f8/0x8a0 fs/file_table.c:430 task_work_run+0x24f/0x310 kernel/task_work.c:228 get_signal+0x15e6/0x1740 kernel/signal.c:2689 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff570179e79 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:00007ff570ec0fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: fffffffffffffffc RBX: 00007ff570315f80 RCX: 00007ff570179e79 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00007ff5701e793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff570315f80 R15: 00007ffc86395f68 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 18316 Comm: syz.3.4184 Not tainted 6.11.0-rc4-syzkaller-g7559a7a84ef8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:36 Code: 48 8b 0c 24 31 d2 e9 6f e6 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 3c e6 ff ff 66 2e RSP: 0018:ffffc90000a18898 EFLAGS: 00000056 RAX: 1ffff11017266c01 RBX: ffffc90000a188e0 RCX: ffffffff84b02b94 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90000a188e0 RBP: ffffc90000a18958 R08: ffff8880b933643f R09: 1ffff11017266c87 R10: dffffc0000000000 R11: ffffed1017266c88 R12: dffffc0000000000 R13: 1ffff9200014311c R14: ffff8880b9336438 R15: 1ffff11017267f26 FS: 000055555d0db500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c35e3a5 CR3: 000000006b89c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_read_write include/linux/instrumented.h:54 [inline] llist_add_batch+0xf6/0x270 lib/llist.c:33 llist_add include/linux/llist.h:248 [inline] __irq_work_queue_local+0xac/0x410 kernel/irq_work.c:107 irq_work_queue_on+0x145/0x260 kernel/irq_work.c:175 rcu_read_unlock_special+0x3cf/0x550 kernel/rcu/tree_plugin.h:685 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:436 rcu_read_unlock include/linux/rcupdate.h:871 [inline] trace_call_bpf+0x607/0x8a0 kernel/trace/bpf_trace.c:148 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10304 perf_trace_preemptirq_template+0x2d2/0x3f0 include/trace/events/preemptirq.h:14 trace_irq_enable+0xf1/0x120 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56 irqentry_exit+0x63/0x90 kernel/entry/common.c:357 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:321 [inline] RIP: 0010:handle_softirqs+0x1df/0x970 kernel/softirq.c:542 Code: 89 7c 24 70 0f b7 db 48 c7 c7 60 ca 09 8c e8 98 b5 5f 0a 65 66 c7 05 56 73 ac 7e 00 00 e8 a9 8d 43 00 fb 49 c7 c4 c0 a0 60 8e ff ff ff ff 0f bc c3 41 89 c7 41 ff c7 0f 84 e6 03 00 00 89 5c RSP: 0018:ffffc90000a18e40 EFLAGS: 00000286 RAX: 924b5283e947bf00 RBX: 0000000000000200 RCX: ffffffff8170433a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606f00 RBP: ffffc90000a18f50 R08: ffffffff9373487f R09: 1ffffffff26e690f R10: dffffc0000000000 R11: fffffbfff26e6910 R12: ffffffff8e60a0c0 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001431dc __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_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:rcu_read_unlock_special+0x88/0x550 kernel/rcu/tree_plugin.h:692 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 39 36 89 7e 41 f7 c4 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc9000ae97c20 EFLAGS: 00000206 RAX: 924b5283e947bf00 RBX: 1ffff920015d2f8c RCX: ffffffff8170433a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c606f00 RBP: ffffc9000ae97d00 R08: ffffffff9373487f R09: 1ffffffff26e690f R10: dffffc0000000000 R11: fffffbfff26e6910 R12: 0000000000000000 R13: ffff888060b1a260 R14: ffffc9000ae97c60 R15: 1ffff920015d2f88 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:436 dput+0x197/0x2b0 fs/dcache.c:851 __fput+0x5f8/0x8a0 fs/file_table.c:430 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4054d79e79 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:00007ffe5a3aca88 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f4054f17a80 RCX: 00007f4054d79e79 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f4054f17a80 R08: 0000000000000006 R09: 00007ffe5a3acd6f R10: 00000000003ff904 R11: 0000000000000246 R12: 00000000000f4984 R13: 00007ffe5a3acb80 R14: 00007ffe5a3acba0 R15: ffffffffffffffff