watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor375:5998]
Modules linked in:
irq event stamp: 929019
hardirqs last  enabled at (929018): [<ffff80008a44626c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (929018): [<ffff80008a44626c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (929019): [<ffff80008a443ea4>] __el1_irq arch/arm64/kernel/entry-common.c:470 [inline]
hardirqs last disabled at (929019): [<ffff80008a443ea4>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (163292): [<ffff8000800218ec>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (163292): [<ffff8000800218ec>] __do_softirq+0xac0/0xd54 kernel/softirq.c:600
softirqs last disabled at (163311): [<ffff80008002b660>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
CPU: 0 PID: 5998 Comm: syz-executor375 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : get_current arch/arm64/include/asm/current.h:19 [inline]
pc : __sanitizer_cov_trace_pc+0x8/0x7c kernel/kcov.c:206
lr : taprio_dequeue_tc_priority+0x168/0x64c net/sched/sch_taprio.c:795
sp : ffff800080007c40
x29: ffff800080007ca0 x28: 0000000000000001 x27: 0000000000000000
x26: ffff0000c800eb4e x25: ffff0000c800eb50 x24: ffff0000d8d91394
x23: ffff0000c800e448 x22: 000000000000000b x21: 1fffe0001b1b2272
x20: 1fffe00019001d6a x19: dfff800000000000 x18: ffff800096727d28
x17: ffff8001263da000 x16: ffff80008050b28c x15: 0000000000000101
x14: 1ffff00011bde0ac x13: dfff800000000000 x12: 0000000026912f8f
x11: 0000000000000101 x10: 0000000000000100 x9 : 0000000000000000
x8 : ffff0000c1cbb780 x7 : ffff80008898bc8c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000008a27
x2 : ffff0000c91ed800 x1 : 0000000000000010 x0 : 000000000000000b
Call trace:
 __sanitizer_cov_trace_pc+0x8/0x7c kernel/kcov.c:200
 taprio_dequeue+0x174/0x508
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1fc/0x231c net/sched/sch_generic.c:415
 qdisc_run+0xc4/0x23c include/net/pkt_sched.h:125
 net_tx_action+0x6f8/0x8ac net/core/dev.c:5090
 __do_softirq+0x2d0/0xd54 kernel/softirq.c:571
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:882
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 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:474 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:488
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:493
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:587
 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:182 [inline]
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:202 [inline]
 mod_objcg_state+0x310/0x4ac mm/memcontrol.c:3256
 memcg_slab_free_hook mm/slab.h:533 [inline]
 slab_free mm/slub.c:3781 [inline]
 kmem_cache_free+0x1d0/0x56c mm/slub.c:3808
 __d_free fs/dcache.c:298 [inline]
 dentry_free+0xc0/0x174 fs/dcache.c:375
 __dentry_kill+0x470/0x5e4 fs/dcache.c:621
 dentry_kill+0xc8/0x250
 dput+0x218/0x454 fs/dcache.c:913
 __fput+0x4f4/0x7bc fs/file_table.c:329
 ____fput+0x20/0x30 fs/file_table.c:349
 task_work_run+0x230/0x2e0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x94/0x160 arch/arm64/kernel/entry-common.c:648
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591