Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000096000046
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000046, ISS2 = 0x00000000
  CM = 0, WnR = 1, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
user pgtable: 4k pages, 52-bit VAs, pgdp=00000000464f7780
[0000000000000000] pgd=08000000495f2403, p4d=0800000048c85403, pud=08000000494e3403, pmd=0000000000000000
Internal error: Oops: 0000000096000046 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 11082 Comm: syz.0.2686 Not tainted 6.13.0-syzkaller-10003-ga86bf2283d2c #0
Hardware name: linux,dummy-virt (DT)
pstate: 014020c9 (nzcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : __lse__cmpxchg_case_acq_32 arch/arm64/include/asm/atomic_lse.h:271 [inline]
pc : __cmpxchg_case_acq_32 arch/arm64/include/asm/cmpxchg.h:120 [inline]
pc : __cmpxchg_acq arch/arm64/include/asm/cmpxchg.h:169 [inline]
pc : raw_atomic_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2055 [inline]
pc : raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2173 [inline]
pc : atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline]
pc : queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
pc : do_raw_spin_lock include/linux/spinlock.h:187 [inline]
pc : __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
pc : _raw_spin_lock_irqsave+0x34/0x8c kernel/locking/spinlock.c:162
lr : add_wait_queue+0x30/0xcc kernel/sched/wait.c:22
sp : ffff800083283c40
x29: ffff800083283c40 x28: f8f000000e846d80 x27: 0000000000000000
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000
x23: f1f0000003491740 x22: 0000000000000000 x21: 0000000000000000
x20: ffff800083283cd0 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: f6f00000046a6e00 x13: 0000000000000001 x12: 0000000000000001
x11: 0000019870c31081 x10: f7f0000008ef1e00 x9 : fff000007f8ed840
x8 : f6f00000046a6e00 x7 : 0000000000000000 x6 : 0000000000000002
x5 : 0000000000000400 x4 : 0000000000000800 x3 : ffff800083283ce8
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __lse__cmpxchg_case_acq_32 arch/arm64/include/asm/atomic_lse.h:271 [inline] (P)
 __cmpxchg_case_acq_32 arch/arm64/include/asm/cmpxchg.h:120 [inline] (P)
 __cmpxchg_acq arch/arm64/include/asm/cmpxchg.h:169 [inline] (P)
 raw_atomic_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2055 [inline] (P)
 raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2173 [inline] (P)
 atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline] (P)
 queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] (P)
 do_raw_spin_lock include/linux/spinlock.h:187 [inline] (P)
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] (P)
 _raw_spin_lock_irqsave+0x34/0x8c kernel/locking/spinlock.c:162 (P)
 add_wait_queue+0x30/0xcc kernel/sched/wait.c:22
 virtio_transport_wait_close net/vmw_vsock/virtio_transport_common.c:1200 [inline]
 virtio_transport_close net/vmw_vsock/virtio_transport_common.c:1282 [inline]
 virtio_transport_release+0x21c/0x2bc net/vmw_vsock/virtio_transport_common.c:1302
 __vsock_release+0x60/0x260 net/vmw_vsock/af_vsock.c:830
 vsock_release+0x3c/0x58 net/vmw_vsock/af_vsock.c:941
 __sock_release+0x40/0xb4 net/socket.c:642
 sock_close+0x18/0x28 net/socket.c:1393
 __fput+0xcc/0x2dc fs/file_table.c:448
 ____fput+0x14/0x20 fs/file_table.c:476
 task_work_run+0x78/0xd4 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x134/0x164 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xc0/0xe0 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:600
Code: b9000841 d503201f 52800001 52800022 (88e17c02) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	b9000841 	str	w1, [x2, #8]
   4:	d503201f 	nop
   8:	52800001 	mov	w1, #0x0                   	// #0
   c:	52800022 	mov	w2, #0x1                   	// #1
* 10:	88e17c02 	casa	w1, w2, [x0] <-- trapping instruction