watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz-executor:5834] Modules linked in: irq event stamp: 1538776 hardirqs last enabled at (1538775): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357 hardirqs last disabled at (1538776): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (1538774): [] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (1538774): [] handle_softirqs+0x5bb/0x8f0 kernel/softirq.c:589 softirqs last disabled at (1538745): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last disabled at (1538745): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last disabled at (1538745): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 CPU: 0 UID: 0 PID: 5834 Comm: syz-executor Not tainted 6.14.0-rc3-syzkaller-00137-g27eddbf34490 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0x4c4/0x12c0 kernel/smp.c:885 Code: 12 0a 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 ec 0e 0c 00 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 RSP: 0018:ffffc900036578f8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b8744bc0 RCX: ffffffff81adcf7a RDX: ffff88806b528000 RSI: ffffffff81adcf54 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170e8979 R13: 0000000000000001 R14: ffff8880b863ffc0 R15: ffff8880b8744bc8 FS: 00005555810a1500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00004000000002c0 CR3: 000000006d910000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:966 [inline] flush_tlb_mm_range+0x271/0x4a0 arch/x86/mm/tlb.c:1054 dup_mmap kernel/fork.c:787 [inline] dup_mm kernel/fork.c:1700 [inline] copy_mm kernel/fork.c:1752 [inline] copy_process+0x70fb/0x8c50 kernel/fork.c:2403 kernel_clone+0xfd/0x960 kernel/fork.c:2815 __do_sys_clone+0xcf/0x120 kernel/fork.c:2958 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe890383913 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffc5f5377b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe890383913 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 00005555810a17d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000927c0 R14: 000000000001bc01 R15: 00007ffc5f537950 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 2983 Comm: kworker/u8:7 Not tainted 6.14.0-rc3-syzkaller-00137-g27eddbf34490 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:__lock_acquire+0x13aa/0x3c40 kernel/locking/lockdep.c:5224 Code: f6 ff ff 31 d2 4c 89 fe 4c 89 ef e8 e0 da ff ff 85 c0 0f 85 14 ff ff ff e9 ea fb ff ff 49 8d 7f d8 e8 da 42 ff ff 48 8d 78 40 <48> 89 c5 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c RSP: 0018:ffffc90000a18b48 EFLAGS: 00000082 RAX: ffffffff96ebeaa8 RBX: 0000000000000000 RCX: ffffffff8195b4ce RDX: fffffbfff2dd7999 RSI: 0000000000000008 RDI: ffffffff96ebeae8 RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff2dd7998 R10: ffffffff96ebccc7 R11: 0000000000000003 R12: ffff88803073e561 R13: ffff88803073da00 R14: 0000000000000003 R15: ffff88803073e568 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3051aff8 CR3: 000000002fcda000 CR4: 0000000000350ef0 Call Trace: lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] advance_sched+0x67f/0xc60 net/sched/sch_taprio.c:985 __run_hrtimer kernel/time/hrtimer.c:1801 [inline] __hrtimer_run_queues+0x20d/0xae0 kernel/time/hrtimer.c:1865 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x112/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 7e 60 e8 a3 ff ff ff 31 c0 e9 e7 62 56 ff 66 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 90 0f 1e fa 65 48 8b 15 34 fc 49 7e 65 8b 05 35 fc 49 7e a9 00 01 RSP: 0018:ffffc9000b8a7b20 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8b23a029 RDX: ffff88803073da00 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000000017e R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000 rcu_read_unlock include/linux/rcupdate.h:878 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0xb7d/0x1060 net/batman-adv/network-coding.c:719 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398 kthread+0x3b2/0x750 kernel/kthread.c:464 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244