watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.1.753:7961] Modules linked in: irq event stamp: 11658942 hardirqs last enabled at (11658941): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11658942): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11657590): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (11657590): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (11657590): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (11657507): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (11657507): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (11657507): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 7961 Comm: syz.1.753 Not tainted 6.12.0-rc4-syzkaller-00167-gd7f214aeacb9 #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+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:ffffc90018dcf960 EFLAGS: 00000282 RAX: 0000000000000000 RBX: 1ffff920031b9f42 RCX: ffffc90018dcfa01 RDX: ffffc900050b1000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90018dcfa98 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 00000000ffffe2ab R13: dffffc0000000000 R14: ffff8880235063b8 R15: ffffc90018dcfa20 FS: 00007f1f2fddb6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f2fddaf98 CR3: 0000000077cce000 CR4: 00000000003526f0 DR0: 0000000020000300 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] 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_getfd fs/anon_inodes.c:234 [inline] anon_inode_getfd+0xce/0x1e0 fs/anon_inodes.c:269 map_create+0xe1f/0x11c0 kernel/bpf/syscall.c:1405 __sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5635 __do_sys_bpf kernel/bpf/syscall.c:5760 [inline] __se_sys_bpf kernel/bpf/syscall.c:5758 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758 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: 0033:0x7f1f2ef7e719 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:00007f1f2fddb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f1f2f135f80 RCX: 00007f1f2ef7e719 RDX: 0000000000000048 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f1f2eff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1f2f135f80 R15: 00007ffe681331f8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7953 Comm: syz.1.749 Not tainted 6.12.0-rc4-syzkaller-00167-gd7f214aeacb9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:check_preemption_disabled+0x19/0x120 lib/smp_processor_id.c:14 Code: 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 44 24 08 <65> 8b 1d 9c e2 3c 74 65 8b 05 91 e2 3c 74 a9 ff ff ff 7f 74 26 65 RSP: 0018:ffffc90000007d08 EFLAGS: 00000082 RAX: aaf2386c21f25c00 RBX: 0000000000000001 RCX: ffffffff8134366e RDX: ffff8880281b8000 RSI: ffffffff8c610340 RDI: ffffffff8c610300 RBP: 0000000000000001 R08: ffffffff81343694 R09: 1ffffffff203a04d R10: dffffc0000000000 R11: fffffbfff203a04e R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001b00 CR3: 0000000059dd6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:737 trace_irq_work_exit arch/x86/include/asm/trace/irq_vectors.h:64 [inline] __sysvec_irq_work+0x12e/0x430 arch/x86/kernel/irq_work.c:23 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x4f/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 73 6f 0a 65 66 c7 05 02 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: aaf2386c21f25c00 RBX: ffffc90000007ee0 RCX: ffffffff8170be0a RDX: dffffc0000000000 RSI: ffffffff8c0acb40 RDI: ffffffff8c610360 RBP: ffffc90000007f50 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff11005037000 __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 c9 2d 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:ffffc90018bbfae0 EFLAGS: 00000206 RAX: aaf2386c21f25c00 RBX: 1ffff92003177f64 RCX: ffffffff8170be0a RDX: dffffc0000000000 RSI: ffffffff8c0acb40 RDI: ffffffff8c610360 RBP: ffffc90018bbfbc0 R08: ffffffff942ca83f R09: 1ffffffff2859507 R10: dffffc0000000000 R11: fffffbfff2859508 R12: 1ffff92003177f60 R13: ffff8880281b8460 R14: ffffc90018bbfb20 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_sys_exit kernel/exit.c:1055 [inline] __se_sys_exit kernel/exit.c:1053 [inline] __x64_sys_exit+0x40/0x40 kernel/exit.c:1053 x64_sys_call+0x2622/0x2640 arch/x86/include/generated/asm/syscalls_64.h:61 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: 0033:0x7f1f2ef7e719 Code: Unable to access opcode bytes at 0x7f1f2ef7e6ef. RSP: 002b:00007f1f2fdb9fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 00007f1f2f136058 RCX: 00007f1f2ef7e719 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f1f2eff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1f2f136058 R15: 00007ffe681331f8