watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz.1.742:5904]
Modules linked in:
irq event stamp: 5317
hardirqs last  enabled at (5316): [<ffff8000851a3038>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (5316): [<ffff8000851a3038>] exit_to_kernel_mode+0x38/0x118 arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (5317): [<ffff8000851a4fdc>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]
hardirqs last disabled at (5317): [<ffff8000851a4fdc>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:551
softirqs last  enabled at (210): [<ffff80008001ca54>] fpsimd_restore_current_state+0x44/0xe4 arch/arm64/kernel/fpsimd.c:1805
softirqs last disabled at (218): [<ffff8000841e65fc>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (218): [<ffff8000841e65fc>] sock_devmem_dontneed+0x158/0x490 net/core/sock.c:1086
CPU: 0 UID: 0 PID: 5904 Comm: syz.1.742 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0
Hardware name: linux,dummy-virt (DT)
pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : debug_lockdep_rcu_enabled+0x0/0x2c kernel/rcu/update.c:320
lr : xa_head include/linux/xarray.h:1204 [inline]
lr : xas_start+0x88/0x4e0 lib/xarray.c:190
sp : ffff80008e867630
x29: ffff80008e867630 x28: 0000000000a5ab46 x27: 1fffe0000254d980
x26: 0000000000000000 x25: 0000000000000000 x24: ffff80008e8677e8
x23: ffff000012a6cc00 x22: 1ffff00011d0cefd x21: ffff0000150f9280
x20: 0000000000000000 x19: ffff80008e8677d0 x18: 00000000ffffffff
x17: 0000000000000000 x16: 0000000000000000 x15: ffff00000db28a80
x14: 1fffe00001b6514f x13: 1fffe00001b65154 x12: ffff700011d0ceff
x11: 1ffff00011d0cefe x10: ffff700011d0cefe x9 : dfff800000000000
x8 : 0000000000000003 x7 : 0000000041b58ab3 x6 : dfff800000000000
x5 : ffff0000150f9280 x4 : 00000000770aab46 x3 : 0000000000000003
x2 : 1fffe00002a1f259 x1 : 0000000000000000 x0 : ffff0000150f92c8
Call trace:
 lockdep_enabled kernel/locking/lockdep.c:119 [inline]
 debug_lockdep_rcu_enabled+0x0/0x2c kernel/locking/lockdep.c:5887
 xas_load+0x1c/0x3c4 lib/xarray.c:238
 xas_store+0x700/0x1130 lib/xarray.c:790
 __xa_erase+0x90/0xf8 lib/xarray.c:1511
 sock_devmem_dontneed+0x1ec/0x490 net/core/sock.c:1089
 sk_setsockopt+0x270/0x2188 net/core/sock.c:1280
 sock_setsockopt+0x34/0x64 net/core/sock.c:1633
 do_sock_setsockopt+0x2cc/0x354 net/socket.c:2325
 __sys_setsockopt+0xdc/0x178 net/socket.c:2352
 __do_sys_setsockopt net/socket.c:2361 [inline]
 __se_sys_setsockopt net/socket.c:2358 [inline]
 __arm64_sys_setsockopt+0xa4/0x100 net/socket.c:2358
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16 Comm: rcu_preempt Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0
Hardware name: linux,dummy-virt (DT)
pstate: 10000005 (nzcV daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : get_current arch/arm64/include/asm/current.h:19 [inline]
pc : finish_task_switch.isra.0+0x1ac/0x8e0 kernel/sched/core.c:5199
lr : raw_spin_rq_unlock_irq kernel/sched/sched.h:1517 [inline]
lr : finish_lock_switch kernel/sched/core.c:5069 [inline]
lr : finish_task_switch.isra.0+0x1a8/0x8e0 kernel/sched/core.c:5187
sp : ffff80008cec7920
x29: ffff80008cec7920 x28: 0000019cd1f07040 x27: ffff000069fcdb48
x26: 1fffe0000d3f9b69 x25: 0000000000000000 x24: 0000000000000000
x23: ffff000016bebc00 x22: ffff000069fccfd8 x21: ffff800086bef000
x20: ffff000069fccfc0 x19: 0000000000000000 x18: 00000000ffffffff
x17: ffff7fffe3425000 x16: 0000000000000000 x15: ffff00000da86480
x14: 1fffe00001b50c8f x13: 1fffe00001b50c94 x12: ffff60000d3f99f9
x11: 1fffe0000d3f99f8 x10: ffff60000d3f99f8 x9 : dfff800000000000
x8 : ffff000069fccfc0 x7 : 0000000000000001 x6 : ffff60000d3f99f8
x5 : 0000000000000000 x4 : 1ffff000119d8f16 x3 : 0000000000000001
x2 : 0000000000000000 x1 : 0000000000000003 x0 : 000000000017c173
Call trace:
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline]
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline]
 raw_spin_rq_unlock_irq kernel/sched/sched.h:1517 [inline]
 finish_lock_switch kernel/sched/core.c:5069 [inline]
 finish_task_switch.isra.0+0x1ac/0x8e0 kernel/sched/core.c:5187
 context_switch kernel/sched/core.c:5318 [inline]
 __schedule+0xaf8/0x2dfc kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xd0/0x304 kernel/sched/core.c:6767
 schedule_timeout+0x108/0x234 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x1b0/0xa48 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0x24c/0x2c8 kernel/rcu/tree.c:2247
 kthread+0x27c/0x300 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860