GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [kworker/u8:23:6127] Modules linked in: irq event stamp: 1561000 hardirqs last enabled at (1560999): [] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (1560999): [] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62 hardirqs last disabled at (1561000): [] __el1_irq arch/arm64/kernel/entry-common.c:506 [inline] hardirqs last disabled at (1561000): [] el1_interrupt+0x28/0x60 arch/arm64/kernel/entry-common.c:522 softirqs last enabled at (1560998): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (1560998): [] handle_softirqs+0xbc4/0xd34 kernel/softirq.c:650 softirqs last disabled at (1560977): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 CPU: 0 UID: 0 PID: 6127 Comm: kworker/u8:23 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound toggle_allocation_gate pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:342 [inline] pc : smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 lr : csd_lock_wait kernel/smp.c:342 [inline] lr : smp_call_function_many_cond+0xfbc/0x1614 kernel/smp.c:892 sp : ffff800098627780 x29: ffff800098627890 x28: dfff800000000000 x27: ffff0001ae057580 x26: 0000000000000011 x25: 0000000000000001 x24: ffff80008897f680 x23: ffffffffffffffff x22: 1fffe00035c0aeb0 x21: 1fffe00035c0aeb1 x20: ffff0001ae080ea8 x19: ffff0001ae057588 x18: 00000000e6d465a8 x17: 0000000035b5c9c3 x16: dfff800000000000 x15: 00000000bf1aa1ff x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000011 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000805a3f94 x2 : 0000000000000000 x1 : ffff0000d6738000 x0 : 0000000000000000 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:233 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:259 [inline] (P) csd_lock_wait kernel/smp.c:342 [inline] (P) smp_call_function_many_cond+0xfa4/0x1614 kernel/smp.c:892 (P) smp_call_function_many kernel/smp.c:915 [inline] smp_call_function+0x58/0xbc kernel/smp.c:935 kick_all_cpus_sync+0x28/0x34 kernel/smp.c:1081 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x314/0x33c kernel/jump_label.c:521 jump_label_update+0x41c/0x4a8 kernel/jump_label.c:910 static_key_enable_cpuslocked+0x11c/0x220 kernel/jump_label.c:210 static_key_enable+0x24/0x38 kernel/jump_label.c:223 toggle_allocation_gate+0xb8/0x28c mm/kfence/core.c:906 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9724 Comm: syz.0.1059 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : handle_softirqs+0x1d0/0xd34 kernel/softirq.c:610 lr : handle_softirqs+0x1cc/0xd34 kernel/softirq.c:606 sp : ffff80008e997ee0 x29: ffff80008e997f80 x28: ffff0000ca651d10 x27: 0000000000000386 x26: ffff0000ca651d08 x25: 1fffe000194ca3a1 x24: ffff0000c0048838 x23: ffff0000ca651d00 x22: dfff800000000000 x21: ffff0001ae07a280 x20: ffff80008891febc x19: ffff0001ae07a280 x18: 00000000c7c7cd5c x17: ffff800125746000 x16: ffff80008e990000 x15: 0000000000000000 x14: 00000000ffff8000 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a3fed08 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000000005a x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080155224 x2 : 0000000000000003 x1 : ffff0000ca651d00 x0 : ffff800125746000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) handle_softirqs+0x1d0/0xd34 kernel/softirq.c:606 (P) __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590 gic_write_sgi1r arch/arm64/include/asm/arch_gicv3.h:109 [inline] (P) gic_send_sgi drivers/irqchip/irq-gic-v3.c:1376 [inline] (P) gic_ipi_send_mask+0x310/0x374 drivers/irqchip/irq-gic-v3.c:1397 (P) __ipi_send_mask+0x84/0x2b0 kernel/irq/ipi.c:285 arm64_send_ipi+0x150/0x180 arch/arm64/kernel/smp.c:923 smp_cross_call+0xf4/0x3e8 arch/arm64/kernel/smp.c:1034 arch_send_call_function_single_ipi+0x3c/0x4c arch/arm64/kernel/smp.c:860 send_call_function_single_ipi kernel/smp.c:120 [inline] smp_call_function_many_cond+0xca8/0x1614 kernel/smp.c:872 smp_call_function_many+0x40/0x54 kernel/smp.c:915 clock_was_set+0x5dc/0x6b0 kernel/time/hrtimer.c:999 do_adjtimex+0x208/0x2f0 kernel/time/timekeeping.c:2924 posix_clock_realtime_adj+0x20/0x30 kernel/time/posix-timers.c:207 do_clock_adjtime+0x120/0x140 kernel/time/posix-timers.c:1154 __do_sys_clock_adjtime kernel/time/posix-timers.c:1166 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1157 [inline] __arm64_sys_clock_adjtime+0x17c/0x2ac kernel/time/posix-timers.c:1157 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594