watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [kworker/0:0:8] Modules linked in: irq event stamp: 61004 hardirqs last enabled at (61003): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (61003): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (61004): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (61004): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (60034): [] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (60034): [] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589 softirqs last disabled at (60023): [] __do_softirq+0x14/0x20 kernel/softirq.c:595 CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: rcu_gp process_srcu pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __arch_counter_get_cntvct arch/arm64/include/asm/arch_timer.h:204 [inline] pc : arch_counter_get_cntvct+0x8/0x1c drivers/clocksource/arm_arch_timer.c:229 lr : __delay+0x18c/0x258 arch/arm64/lib/delay.c:48 sp : ffff800097a47910 x29: ffff800097a47910 x28: 0000000000000001 x27: 0000000000000001 x26: dfff800000000000 x25: ffffffff5b2fc421 x24: ffff80008f2f0000 x23: 1ffff00011e5e0b5 x22: dfff800000000000 x21: 00000000a4d045a3 x20: ffff80008f2f05a8 x19: 000000000000007d x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008069cc18 x15: 0000000000000001 x14: 1fffe000367047a1 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000367047a2 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff80008b6ae5a4 x7 : ffff8000805043fc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080506ce8 x2 : 0000000000000000 x1 : 000000000000007d x0 : 00000000a4d045ec Call trace: __arch_counter_get_cntvct arch/arm64/include/asm/arch_timer.h:204 [inline] (P) arch_counter_get_cntvct+0x8/0x1c drivers/clocksource/arm_arch_timer.c:229 (P) __const_udelay arch/arm64/lib/delay.c:55 [inline] __udelay+0x60/0x70 arch/arm64/lib/delay.c:61 udelay include/asm-generic/delay.h:64 [inline] try_check_zero+0x448/0x494 kernel/rcu/srcutree.c:1112 srcu_advance_state kernel/rcu/srcutree.c:1742 [inline] process_srcu+0x21c/0x14c0 kernel/rcu/srcutree.c:1851 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6653 Comm: syz-executor.0 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] pc : handle_softirqs+0x1f4/0xd34 kernel/softirq.c:545 lr : handle_softirqs+0x1ec/0xd34 kernel/softirq.c:545 sp : ffff800080017f00 x29: ffff800080017f80 x28: 0000000000000386 x27: 1fffe0001aa5d791 x26: ffff0000d52ebc90 x25: ffff0000d52ebc90 x24: ffff0000d52ebc88 x23: ffff0000d52ebcac x22: dfff800000000000 x21: ffff80008f8eb1cc x20: 00000000ffffb9f9 x19: ffff0001b381b580 x18: ffff0000d2860240 x17: ffff800123f1c000 x16: ffff8000804642d0 x15: 0000000000000001 x14: 1ffff00012ea4778 x13: ffff800080018000 x12: 0000000000000003 x11: 0000000000000103 x10: 0000800000000000 x9 : 0000000000000000 x8 : 0000000000063588 x7 : ffff80008058ebfc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008b757e80 x0 : ffff800123f1c000 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+0x1f4/0xd34 kernel/softirq.c:545 (P) __do_softirq+0x14/0x20 kernel/softirq.c:595 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:442 [inline] __irq_exit_rcu+0x1d8/0x544 kernel/softirq.c:662 irq_exit_rcu+0x14/0x84 kernel/softirq.c:678 __el1_irq arch/arm64/kernel/entry-common.c:561 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 trace_lock_acquire include/trace/events/lock.h:24 [inline] (P) lock_acquire+0xb0/0x724 kernel/locking/lockdep.c:5820 (P) rcu_lock_acquire+0x40/0x4c include/linux/rcupdate.h:337 rcu_read_lock_sched include/linux/rcupdate.h:941 [inline] pfn_valid+0x12c/0x480 include/linux/mmzone.h:2048 page_table_check_set+0x3c/0x408 mm/page_table_check.c:110 __page_table_check_ptes_set+0x2d0/0x398 mm/page_table_check.c:225 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] __set_ptes arch/arm64/include/asm/pgtable.h:427 [inline] set_ptes arch/arm64/include/asm/pgtable.h:1673 [inline] __copy_present_ptes mm/memory.c:967 [inline] copy_present_ptes mm/memory.c:1050 [inline] copy_pte_range mm/memory.c:1173 [inline] copy_pmd_range mm/memory.c:1261 [inline] copy_pud_range+0x6430/0x8064 mm/memory.c:1298 copy_p4d_range mm/memory.c:1322 [inline] copy_page_range+0x5fc/0xc4c mm/memory.c:1420 dup_mmap kernel/fork.c:748 [inline] dup_mm kernel/fork.c:1691 [inline] copy_mm+0xe68/0x1b58 kernel/fork.c:1743 copy_process+0x1568/0x3250 kernel/fork.c:2394 kernel_clone+0x1d8/0x82c kernel/fork.c:2806 __do_sys_clone kernel/fork.c:2949 [inline] __se_sys_clone kernel/fork.c:2917 [inline] __arm64_sys_clone+0x1f8/0x24c kernel/fork.c:2917 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600