watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.348:6976] Modules linked in: irq event stamp: 11719432 hardirqs last enabled at (11719431): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11719432): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11718626): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (11718626): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (11718626): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (11718611): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (11718611): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (11718611): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 6976 Comm: syz.2.348 Not tainted 6.12.0-rc7-syzkaller-g2c8b09ac2537 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 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+0x76b/0xdb0 kernel/locking/qspinlock.c:508 Code: 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 04 28 84 c0 75 77 41 80 3e 00 74 0c f3 90 RSP: 0018:ffffc90004cff8e0 EFLAGS: 00000297 RAX: 0000000000000002 RBX: 1ffff9200099ff32 RCX: ffffc90004cff901 RDX: ffffc9000c679000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc90004cffa18 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 00000000ffffff41 R13: dffffc0000000000 R14: ffff88802340edc8 R15: ffffc90004cff9a0 FS: 00007f24a14586c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000034654000 CR4: 00000000003526f0 DR0: 0000000020000300 DR1: 0000000000000006 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 __btf_new_fd kernel/bpf/btf.c:7713 [inline] btf_new_fd+0x802/0xd30 kernel/bpf/btf.c:7737 __sys_bpf+0x6ef/0x810 kernel/bpf/syscall.c:5804 __do_sys_bpf kernel/bpf/syscall.c:5866 [inline] __se_sys_bpf kernel/bpf/syscall.c:5864 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5864 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: 0033:0x7f24a057e819 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:00007f24a1458038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f24a0735fa0 RCX: 00007f24a057e819 RDX: 0000000000000020 RSI: 00000000200003c0 RDI: 0000000000000012 RBP: 00007f24a05f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f24a0735fa0 R15: 00007ffec5557f18 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6978 Comm: syz.0.350 Not tainted 6.12.0-rc7-syzkaller-g2c8b09ac2537 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188 Code: 8e e8 6f b8 e1 ff 90 0f 0b 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 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 RSP: 0018:ffffc90000007890 EFLAGS: 00000046 RAX: 1ffff110170c6c8e RBX: 0000000000000000 RCX: ffffffff84bd6334 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff8880b8636470 RBP: ffffc90000007958 R08: ffffffff81a3a003 R09: 1ffff110170c7f57 R10: dffffc0000000000 R11: ffffed10170c7f58 R12: dffffc0000000000 R13: 1ffff92000000f1c R14: ffff8880b8636470 R15: 1ffff110170c7f56 FS: 00005555816a0500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3080cff8 CR3: 0000000024b74000 CR4: 00000000003526f0 DR0: 0000000020000300 DR1: 0000000000000006 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: instrument_atomic_read_write include/linux/instrumented.h:96 [inline] llist_add_batch+0xe4/0x270 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+0x3f9/0x570 kernel/rcu/tree_plugin.h:686 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 rcu_read_unlock include/linux/rcupdate.h:882 [inline] trace_call_bpf+0x607/0x8a0 kernel/trace/bpf_trace.c:148 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10416 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+0x1e3/0x980 kernel/softirq.c:542 Code: 7c 24 70 45 0f b7 e4 48 c7 c7 40 c3 09 8c e8 84 ea 70 0a 65 66 c7 05 d2 4b ac 7e 00 00 e8 a5 1e 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: 7f592a5ba2dff400 RBX: ffffc90000007ee0 RCX: ffffffff8170c9ba RDX: dffffc0000000000 RSI: ffffffff8c0acda0 RDI: ffffffff8c6114e0 RBP: ffffc90000007f50 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff11005f86780 __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 49 22 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:ffffc90004e8fc20 EFLAGS: 00000206 RAX: 7f592a5ba2dff400 RBX: 1ffff920009d1f8c RCX: ffffffff8170c9ba RDX: dffffc0000000000 RSI: ffffffff8c0acda0 RDI: ffffffff8c6114e0 RBP: ffffc90004e8fd00 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 1ffff920009d1f88 R13: ffff88802fc34060 R14: ffffc90004e8fc60 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 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: 0033:0x7f79caf7e819 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:00007ffca22e0d78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000001ad18 RCX: 00007f79caf7e819 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f79cb137ba0 R08: 0000000000000001 R09: 00007ffca22e106f R10: 00007f79cae00000 R11: 0000000000000246 R12: 000000000001ad7e R13: 00007f79cb135fa0 R14: 0000000000000032 R15: ffffffffffffffff