watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.4.278:6932] Modules linked in: irq event stamp: 11786860 hardirqs last enabled at (11786859): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11786860): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11786560): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (11786560): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (11786560): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (11786525): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (11786525): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (11786525): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 6932 Comm: syz.4.278 Not tainted 6.12.0-rc4-syzkaller-g87cb58aebdf7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x75d/0xdb0 kernel/locking/qspinlock.c:508 Code: 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 24 40 42 0f b6 RSP: 0018:ffffc90017dcf960 EFLAGS: 00000286 RAX: 0000000000000002 RBX: 1ffff92002fb9f42 RCX: ffffc90017dcfa01 RDX: ffffc9000b5c2000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90017dcfa98 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 00000000ffffc49a R13: dffffc0000000000 R14: ffff8880234532d0 R15: ffffc90017dcfa20 FS: 00007f90854dc6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c297c0f CR3: 000000007d9d6000 CR4: 00000000003526f0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 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] d_instantiate+0x64/0xa0 fs/dcache.c:1893 alloc_path_pseudo fs/file_table.c:341 [inline] alloc_file_pseudo+0x19e/0x290 fs/file_table.c:353 __anon_inode_getfile fs/anon_inodes.c:109 [inline] anon_inode_getfile+0xc8/0x180 fs/anon_inodes.c:147 __do_sys_perf_event_open kernel/events/core.c:12945 [inline] __se_sys_perf_event_open+0x2553/0x3870 kernel/events/core.c:12657 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f908477e719 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:00007f90854dc038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f9084935f80 RCX: 00007f908477e719 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f90847f132e R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9084935f80 R15: 00007ffd85af4ee8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6938 Comm: syz.0.279 Not tainted 6.12.0-rc4-syzkaller-g87cb58aebdf7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:check_preemption_disabled+0x0/0x120 lib/smp_processor_id.c:13 Code: c7 00 08 61 8c 48 c7 c6 40 08 61 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <41> 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 RSP: 0018:ffffc90000007c98 EFLAGS: 00000086 RAX: 1ffffffff1c63f4a RBX: ffffffff8e31fa50 RCX: ffff88802fc3bc00 RDX: 0000000000010100 RSI: ffffffff8c610840 RDI: ffffffff8c610800 RBP: ffff88802fc3bc00 R08: ffffffff81343694 R09: 1ffffffff2039ffd R10: dffffc0000000000 R11: fffffbfff2039ffe R12: ffff8880b8628888 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb6451af98 CR3: 00000000670c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: irqtime_account_irq+0x6d/0x1e0 kernel/sched/cputime.c:63 account_hardirq_exit include/linux/vtime.h:154 [inline] __irq_exit_rcu+0xba/0x1c0 kernel/softirq.c:634 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x54/0xc0 arch/x86/kernel/irq_work.c:17 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+0x1e3/0x980 kernel/softirq.c:542 Code: 7c 24 70 45 0f b7 e4 48 c7 c7 e0 c0 09 8c e8 64 93 6f 0a 65 66 c7 05 42 55 ac 7e 00 00 e8 b5 1b 45 00 fb 49 c7 c6 c0 a0 60 8e ff ff ff ff 41 0f bc c4 41 89 c7 41 ff c7 0f 84 eb 03 00 00 44 RSP: 0018:ffffc90000007e40 EFLAGS: 00000286 RAX: f6629f5f1585bf00 RBX: ffffc90000007ee0 RCX: ffffffff8170be0a RDX: dffffc0000000000 RSI: ffffffff8c0acb40 RDI: ffffffff8c610860 RBP: ffffc90000007f50 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff11005f87780 __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+0x88/0x570 kernel/rcu/tree_plugin.h:693 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 09 2e 88 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22 RSP: 0018:ffffc90017b5f800 EFLAGS: 00000206 RAX: f6629f5f1585bf00 RBX: 1ffff92002f6bf08 RCX: ffffffff8170be0a RDX: dffffc0000000000 RSI: ffffffff8c0acb40 RDI: ffffffff8c610860 RBP: ffffc90017b5f8e0 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 1ffff92002f6bf04 R13: ffff88802fc3c060 R14: ffffc90017b5f840 R15: 0000000000000000 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 dput+0x197/0x2b0 fs/dcache.c:856 __fput+0x5d2/0x880 fs/file_table.c:439 task_work_run+0x24f/0x310 kernel/task_work.c:239 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 get_signal+0x16a3/0x1740 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 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: 0033:0x7fca8677e719 Code: Unable to access opcode bytes at 0x7fca8677e6ef. RSP: 002b:00007fca875930e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fca86936210 RCX: 00007fca8677e719 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fca86936210 RBP: 00007fca86936208 R08: 00007fffa985a7a7 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fca86936214 R13: 0000000000000001 R14: 00007fffa985a6c0 R15: 00007fffa985a7a8