watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor:4117]
Modules linked in:
irq event stamp: 71064
hardirqs last  enabled at (71063): [<ffff800011ab6ec8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (71063): [<ffff800011ab6ec8>] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (71064): [<ffff800011ab7110>] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227
softirqs last  enabled at (65798): [<ffff8000081b691c>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (65798): [<ffff8000081b691c>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (65777): [<ffff8000081b6fb4>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (65777): [<ffff8000081b6fb4>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (65777): [<ffff8000081b6fb4>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (65777): [<ffff8000081b6fb4>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
CPU: 0 PID: 4117 Comm: syz-executor Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:440 [inline]
pc : smp_call_function_single+0x268/0x4f8 kernel/smp.c:758
lr : csd_lock_wait kernel/smp.c:440 [inline]
lr : smp_call_function_single+0x280/0x4f8 kernel/smp.c:758
sp : ffff8000203172c0
x29: ffff800020317360 x28: 1fffe00019a47001 x27: dfff800000000000
x26: ffff700004062e5c x25: ffff800020317318 x24: ffff800020317308
x23: ffff800020317300 x22: ffff0000cd238008 x21: 0000000000000011
x20: ffff800020317308 x19: 0000000000000000 x18: ffff800020316d00
x17: 1fffe00036831b8e x16: ffff800011ab8a34 x15: 0000000000016121
x14: 1ffff0000295806a x13: 0000000000000000 x12: 0000000000000001
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff800020317320 x4 : ffff8000141c1740 x3 : ffff80000840db68
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]
 csd_lock_wait kernel/smp.c:440 [inline]
 smp_call_function_single+0x268/0x4f8 kernel/smp.c:758
 rcu_barrier+0x210/0x4b0 kernel/rcu/tree.c:4078
 netdev_wait_allrefs net/core/dev.c:10560 [inline]
 netdev_run_todo+0x67c/0xae0 net/core/dev.c:10649
 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:112
 nsim_destroy+0xb4/0x164 drivers/net/netdevsim/netdev.c:387
 __nsim_dev_port_del+0x148/0x1a8 drivers/net/netdevsim/dev.c:1349
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1362 [inline]
 nsim_dev_reload_destroy+0x13c/0x214 drivers/net/netdevsim/dev.c:1561
 nsim_dev_remove+0x5c/0x108 drivers/net/netdevsim/dev.c:1577
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:381
 __device_release_driver drivers/base/dd.c:1227 [inline]
 device_release_driver_internal+0x428/0x6ac drivers/base/dd.c:1262
 device_release_driver+0x28/0x38 drivers/base/dd.c:1285
 bus_remove_device+0x298/0x38c drivers/base/bus.c:531
 device_del+0x57c/0x9b4 drivers/base/core.c:3600
 device_unregister+0x2c/0xcc drivers/base/core.c:3633
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:454 [inline]
 del_device_store+0x2a4/0x3bc drivers/net/netdevsim/bus.c:354
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2174 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x884/0xb44 fs/read_write.c:594
 ksys_write+0x15c/0x26c fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584