watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:9650] Modules linked in: irq event stamp: 276561 hardirqs last enabled at (276560): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (276560): [] exit_to_kernel_mode+0xe8/0x118 arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (276561): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (276561): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (267366): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (267366): [] __do_softirq+0xc14/0xea0 kernel/softirq.c:600 softirqs last disabled at (271789): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 CPU: 0 PID: 9650 Comm: syz-executor.1 Not tainted 6.1.33-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x15c/0xe48 kernel/locking/qspinlock.c:383 lr : queued_spin_lock_slowpath+0x168/0xe48 kernel/locking/qspinlock.c:383 sp : ffff8000080079c0 x29: ffff800008007a60 x28: 1fffe0001ae7881e x27: 1ffff00001000f44 x26: dfff800000000000 x25: 1fffe0001ae78820 x24: ffff8000080079e0 x23: ffff800008007a20 x22: ffff700001000f3c x21: 0000000000000001 x20: 0000000000000001 x19: ffff0000d73c40f0 x18: 0000000000000150 x17: ffff80019f09e000 x16: ffff80000896d2d4 x15: 0000000000000000 x14: 1ffff00002ab80b0 x13: dfff800000000000 x12: 0000000000000001 x11: 1fffe0001ae7881e x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000101 x7 : ffff80001071730c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000121e26f4 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:252 [inline] __cmpwait arch/arm64/include/asm/cmpxchg.h:278 [inline] queued_spin_lock_slowpath+0x15c/0xe48 kernel/locking/qspinlock.c:383 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x330/0x358 kernel/locking/spinlock_debug.c:115 __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline] _raw_spin_lock+0x5c/0x6c kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] fq_pie_timer+0x94/0x248 net/sched/sch_fq_pie.c:377 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1790 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1803 __do_softirq+0x30c/0xea0 kernel/softirq.c:571 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84 invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650 irq_exit_rcu+0x14/0x84 kernel/softirq.c:662 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:577 cpumask_check include/linux/cpumask.h:117 [inline] cpumask_test_cpu include/linux/cpumask.h:444 [inline] cpu_online include/linux/cpumask.h:1030 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xd8/0x7cc kernel/locking/lockdep.c:5640 rcu_lock_acquire+0x38/0x44 include/linux/rcupdate.h:306 rcu_read_lock include/linux/rcupdate.h:747 [inline] get_mem_cgroup_from_mm+0x40/0x3dc mm/memcontrol.c:1036 __mem_cgroup_charge+0x24/0xa8 mm/memcontrol.c:6914 mem_cgroup_charge include/linux/memcontrol.h:667 [inline] shmem_add_to_page_cache+0x6fc/0x117c mm/shmem.c:708 shmem_get_folio_gfp+0x11f0/0x21f0 mm/shmem.c:1952 shmem_get_folio mm/shmem.c:2053 [inline] shmem_write_begin+0x13c/0x4e8 mm/shmem.c:2540 generic_perform_write+0x278/0x55c mm/filemap.c:3754 __generic_file_write_iter+0x168/0x388 mm/filemap.c:3882 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:3914 call_write_iter include/linux/fs.h:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x914 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581