watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.0.279:6476] Modules linked in: irq event stamp: 454930 hardirqs last enabled at (454929): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (454930): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (454916): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (454916): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (454916): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (454897): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (454897): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (454897): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 6476 Comm: syz.0.279 Not tainted 6.12.0-rc1-syzkaller-00167-gba4fb3b3f7d8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x781/0xdb0 kernel/locking/qspinlock.c:508 Code: 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 <41> ff c4 75 d2 e9 a0 00 00 00 4c 89 f7 be 02 00 00 00 e8 a8 5c 2f RSP: 0018:ffffc90003f37ac0 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 1ffff920007e6f6e RCX: ffffc90003f37b01 RDX: 0000000000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c60fbe0 RBP: ffffc90003f37bf8 R08: ffffffff942c583f R09: 1ffffffff2858b07 R10: dffffc0000000000 R11: fffffbfff2858b08 R12: 00000000ffffef9f R13: dffffc0000000000 R14: ffff888023482dc8 R15: ffffc90003f37b80 FS: 0000555594372500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32c0cff8 CR3: 000000007c560000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:665 dput+0x18a/0x2b0 fs/dcache.c:855 __fput+0x5d2/0x880 fs/file_table.c:439 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: 0033:0x7fe4f7d7dff9 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:00007fff21c1d6c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fe4f7f37a80 RCX: 00007fe4f7d7dff9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fe4f7f37a80 R08: 00007fe4f7f22000 R09: 00007fff21c1d9bf R10: 00000000005ec9ac R11: 0000000000000246 R12: 000000000002033c R13: 00007fff21c1d7d0 R14: 0000000000000032 R15: ffffffffffffffff Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6479 Comm: syz.1.280 Not tainted 6.12.0-rc1-syzkaller-00167-gba4fb3b3f7d8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x90 kernel/kcov.c:320 Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 c0 d7 03 00 65 8b 05 60 ef RSP: 0018:ffffc90000007930 EFLAGS: 00000046 RAX: 0000000000000002 RBX: ffffea000000000f RCX: ffff888032441e00 RDX: 0000000000000100 RSI: 0000000000000008 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8142f239 R09: 1ffffffff2858b00 R10: dffffc0000000000 R11: fffffbfff2858b01 R12: 00000000b863fa70 R13: 0000000000000000 R14: ffffffff8142f173 R15: ffff88813fffa820 FS: 0000555560cc7500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32b1cff8 CR3: 00000000602c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pfn_valid include/linux/mmzone.h:2052 [inline] __virt_addr_valid+0x29b/0x530 arch/x86/mm/physaddr.c:65 kasan_addr_to_slab+0xd/0x80 mm/kasan/common.c:37 __kasan_record_aux_stack+0x11/0xc0 mm/kasan/generic.c:526 irq_work_queue_on+0x118/0x260 kernel/irq_work.c:150 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 60 c0 09 8c e8 f4 eb 6d 0a 65 66 c7 05 62 4e ac 7e 00 00 e8 e5 1d 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: 125d71ada35d8b00 RBX: ffffc90000007ee0 RCX: ffffffff8170c42a RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c60fbe0 RBP: ffffc90000007f50 R08: ffffffff942c583f R09: 1ffffffff2858b07 R10: dffffc0000000000 R11: fffffbfff2858b08 R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff110064883c0 __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 39 27 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:ffffc90003b5fc20 EFLAGS: 00000206 RAX: 125d71ada35d8b00 RBX: 1ffff9200076bf8c RCX: ffffffff8170c42a RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c60fbe0 RBP: ffffc90003b5fd00 R08: ffffffff942c583f R09: 1ffffffff2858b07 R10: dffffc0000000000 R11: fffffbfff2858b08 R12: 1ffff9200076bf88 R13: ffff888032442260 R14: ffffc90003b5fc60 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: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: 0033:0x7fe7da17dff9 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:00007ffd00834178 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fe7da337a80 RCX: 00007fe7da17dff9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fe7da337a80 R08: 00007fe7da322000 R09: 00007ffd0083446f R10: 00000000003fc978 R11: 0000000000000246 R12: 0000000000020357 R13: 00007ffd00834280 R14: 0000000000000032 R15: ffffffffffffffff