watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.0.28:5997] Modules linked in: irq event stamp: 10731855 hardirqs last enabled at (10731854): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10731855): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (10560106): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10560106): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10560106): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (10560109): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10560109): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10560109): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5997 Comm: syz.0.28 Not tainted 6.12.0-rc4-syzkaller-g5f67329cb29c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:unwind_next_frame+0xcfb/0x22d0 Code: 48 8b 5c 24 78 4c 8b 7c 24 50 74 08 48 89 df e8 9b 76 bd 00 48 8b 04 24 48 89 03 ba 10 00 00 00 4c 89 ff 31 f6 e8 65 78 bd 00 85 07 00 00 48 89 5c 24 40 48 89 6c 24 48 4c 89 7c 24 28 49 8d RSP: 0018:ffffc900000076b0 EFLAGS: 00000246 RAX: ffffc900000077d0 RBX: ffffc900000077b8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900000077e0 RBP: dffffc0000000000 R08: ffffc900000077df R09: 0000000000000000 R10: ffffc900000077d0 R11: fffff52000000efc R12: ffffc90000008000 R13: ffffc90000007780 R14: ffffffff817c968a R15: ffffc900000077d0 FS: 00007f1fcfda36c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002441a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x1a0/0x440 mm/slub.c:4727 slab_free_after_rcu_debug+0x62/0x290 mm/slub.c:4616 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __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_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__text_poke+0xa4a/0xd30 arch/x86/kernel/alternative.c:1960 Code: 7c 24 50 00 75 19 e8 15 75 5f 00 eb 18 e8 0e 75 5f 00 e8 d9 c4 91 0a 48 83 7c 24 50 00 74 e7 e8 fc 74 5f 00 fb 48 8b 44 24 78 <42> 80 3c 28 00 74 0d 48 8d bc 24 60 01 00 00 e8 e2 75 c9 00 48 8b RSP: 0018:ffffc9000442f5e0 EFLAGS: 00000287 RAX: 1ffff92000885ee8 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc900049a1000 RSI: 0000000000002d9e RDI: 0000000000002d9f RBP: ffffc9000442f7b0 R08: ffffffff81356294 R09: 1ffffffff285a100 R10: dffffc0000000000 R11: fffffbfff285a101 R12: 1ffff92000885ecc R13: dffffc0000000000 R14: 0000000000000046 R15: ffffffff81704644 text_poke arch/x86/kernel/alternative.c:1984 [inline] text_poke_bp_batch+0x265/0xb30 arch/x86/kernel/alternative.c:2292 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10357 perf_try_init_event+0x146/0x810 kernel/events/core.c:11891 perf_init_event kernel/events/core.c:11977 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12259 __do_sys_perf_event_open kernel/events/core.c:12766 [inline] __se_sys_perf_event_open+0xb1f/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: 0033:0x7f1fcef7e719 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:00007f1fcfda3038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f1fcf135f80 RCX: 00007f1fcef7e719 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f1fceff139e R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1fcf135f80 R15: 00007ffd84210e18 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 101 PID: 5649 Comm: dhcpcd Not tainted 6.12.0-rc4-syzkaller-g5f67329cb29c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:filter_irq_stacks+0x2e/0xa0 kernel/stacktrace.c:396 Code: 55 41 57 41 56 41 55 41 54 53 85 f6 74 72 49 89 fe 41 89 f4 45 31 ff 48 c7 c5 30 02 e0 8b 49 c7 c5 e0 19 d1 8b 48 89 fb eb 0c <49> ff c7 48 83 c3 08 4d 39 fc 74 4f 48 89 d8 48 c1 e8 03 48 b9 00 RSP: 0018:ffffc9000336f578 EFLAGS: 00000287 RAX: ffffffff8a6201ea RBX: ffffc9000336f640 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000000000000d RDI: ffffc9000336f610 RBP: ffffffff8be00230 R08: ffffffff901d21af R09: 1ffffffff203a435 R10: dffffc0000000000 R11: fffffbfff203a436 R12: 000000000000000d R13: ffffffff8bd119e0 R14: ffffc9000336f610 R15: 0000000000000006 FS: 00007fdcb6ec9740(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555d5e5145d0 CR3: 00000000336a2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: stack_depot_save_flags+0x29/0x830 lib/stackdepot.c:609 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x1a0/0x440 mm/slub.c:4727 skb_kfree_head net/core/skbuff.c:1086 [inline] skb_free_head net/core/skbuff.c:1098 [inline] skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb net/core/skbuff.c:1204 [inline] consume_skb+0x9f/0xf0 net/core/skbuff.c:1436 __unix_dgram_recvmsg+0xcea/0x12f0 net/unix/af_unix.c:2520 sock_recvmsg_nosec net/socket.c:1051 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1073 sock_read_iter+0x2c4/0x3d0 net/socket.c:1143 new_sync_read fs/read_write.c:488 [inline] vfs_read+0x9bb/0xbc0 fs/read_write.c:569 ksys_read+0x183/0x2b0 fs/read_write.c:712 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: 0033:0x7fdcb6f93b6a Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffc07108288 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007ffc071184e8 RCX: 00007fdcb6f93b6a RDX: 00000000000100e0 RSI: 00007ffc071082e8 RDI: 000000000000000f RBP: 0000555d5e5119c7 R08: 000000000000000f R09: 0000000000000000 R10: 00007ffc07118730 R11: 0000000000000246 R12: 0000555d62816e70 R13: 0000555d6281ceb0 R14: 00007ffc071082e8 R15: 0000000000000000