watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.4.5:5962] Modules linked in: irq event stamp: 17463315 hardirqs last enabled at (17463314): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (17463315): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (17448722): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (17448722): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (17448722): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (17448725): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (17448725): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (17448725): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 5962 Comm: syz.4.5 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:sched_balance_update_blocked_averages+0x1565/0x1680 kernel/sched/fair.c:9913 Code: 0f 85 80 00 00 00 f7 84 24 90 00 00 00 00 02 00 00 48 b8 00 00 00 00 00 fc ff df 74 01 fb 48 c7 84 24 e0 00 00 00 0e 36 e0 45 <48> 8b 8c 24 a0 00 00 00 48 c7 04 08 00 00 00 00 66 c7 44 08 09 00 RSP: 0018:ffffc90000a08c20 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920001411a4 RCX: ffffffff81cb46bc RDX: 0000000000000000 RSI: ffffffff8e69b2a4 RDI: ffffffff8ca1b140 RBP: ffffc90000a08db8 R08: ffffffff905fcd77 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: ffff8880b873a5e0 R13: ffff8880b873a5e0 R14: ffffc90000a08d20 R15: 0000000000000001 FS: 00007f5ab5c866c0(0000) GS:ffff888125099000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c251776 CR3: 000000002f21c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sched_balance_softirq+0xe7/0x170 kernel/sched/fair.c:12928 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 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:preempt_schedule_irq+0xf9/0x1c0 kernel/sched/core.c:7090 Code: 89 fe 49 c1 ee 03 eb 0d 48 f7 03 08 00 00 00 0f 84 89 00 00 00 bf 01 00 00 00 e8 a2 35 5f f5 e8 bd f3 99 f5 fb bf 01 00 00 00 32 a5 ff ff 43 80 3c 26 00 74 08 4c 89 ff e8 d3 28 fc f5 48 c7 RSP: 0018:ffffc9000496f800 EFLAGS: 00000282 RAX: f1c74b541a5a0c00 RBX: 1ffff9200092df08 RCX: ffffffff81cb46bc RDX: 0000000000000000 RSI: ffffffff8e69b2a4 RDI: 0000000000000001 RBP: ffffc9000496f8c0 R08: ffffffff905fcd77 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: dffffc0000000000 R13: 1ffff9200092df00 R14: 1ffff9200092df04 R15: ffffc9000496f820 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:obj_cgroup_uncharge_pages+0x159/0x220 mm/memcontrol.c:2673 Code: 8f 44 24 40 43 80 7c 25 00 00 74 05 e8 90 7c f7 ff f6 44 24 41 02 0f 85 96 00 00 00 f7 44 24 18 00 02 00 00 74 01 fb 4c 89 ff <89> de e8 d0 35 ff ff 4c 39 3d b1 f8 29 0e 74 0c 4c 89 ff 8b 74 24 RSP: 0018:ffffc9000496f980 EFLAGS: 00000206 RAX: f1c74b541a5a0c00 RBX: 00000000ffffffff RCX: ffffffff81cb46bc RDX: 0000000000000000 RSI: ffffffff8e69b2a4 RDI: ffff88807e79c000 RBP: ffffc9000496fa50 R08: ffffffff905fcd77 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: dffffc0000000000 R13: 1ffff9200092df38 R14: 1ffff9200092df34 R15: ffff88807e79c000 refill_obj_stock+0x491/0x700 mm/memcontrol.c:2967 obj_cgroup_charge+0x406/0x650 mm/memcontrol.c:3009 __memcg_slab_post_alloc_hook+0x1b1/0x7e0 mm/memcontrol.c:3068 memcg_slab_post_alloc_hook mm/slub.c:2188 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_lru_noprof+0x296/0x390 mm/slub.c:4219 sock_alloc_inode+0x28/0xc0 net/socket.c:309 alloc_inode+0x69/0x1b0 fs/inode.c:346 new_inode_pseudo include/linux/fs.h:3309 [inline] sock_alloc net/socket.c:622 [inline] __sock_create+0x127/0xa30 net/socket.c:1505 sock_create net/socket.c:1599 [inline] __sys_socket_create net/socket.c:1636 [inline] __sys_socket+0x14d/0x3c0 net/socket.c:1683 __do_sys_socket net/socket.c:1697 [inline] __se_sys_socket net/socket.c:1695 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1695 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5ab4d8d169 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:00007f5ab5c86038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f5ab4fa5fa0 RCX: 00007f5ab4d8d169 RDX: 0000000000000084 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 00007f5ab4e0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5ab4fa5fa0 R15: 00007ffcbcfe04f8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1092 Comm: kworker/u8:5 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x1bac/0x2d40 kernel/smp.c:885 Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c8 e2 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 78 de 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 RSP: 0018:ffffc90003ad7640 EFLAGS: 00000293 RAX: ffffffff81b7792d RBX: 1ffff110170e7e91 RCX: ffff888027225a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003ad7840 R08: ffffffff81b778f8 R09: 1ffffffff20bf9ae R10: dffffc0000000000 R11: fffffbfff20bf9af R12: ffff8880b863ad08 R13: ffff8880b873f488 R14: ffff8880b863ad00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124f99000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd4a44bf6c0 CR3: 000000000eb38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2455 [inline] text_poke_bp_batch+0x354/0xb30 arch/x86/kernel/alternative.c:2665 text_poke_flush arch/x86/kernel/alternative.c:2856 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2863 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 toggle_allocation_gate+0x1b1/0x250 mm/kfence/core.c:855 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd50 kernel/workqueue.c:3400 kthread+0x7b7/0x940 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245