8<--- cut here ---
Unable to handle kernel NULL pointer dereference at virtual address 0000000e when read
[0000000e] *pgd=80000080004003, *pmd=00000000
Internal error: Oops: 207 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 1370 Comm: kworker/u5:6 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: events_unbound io_ring_exit_work
PC is at __io_remove_buffers io_uring/kbuf.c:219 [inline]
PC is at __io_remove_buffers+0x38/0x184 io_uring/kbuf.c:209
LR is at io_destroy_buffers+0x48/0x138 io_uring/kbuf.c:264
pc : [<807c9634>]    lr : [<807c9bf0>]    psr: 20000113
sp : eac01e48  ip : eac01e78  fp : eac01e74
r10: 827e4691  r9 : 82e85800  r8 : ffffffff
r7 : 82e85b4c  r6 : 00000001  r5 : 84253800  r4 : 00000000
r3 : 00000000  r2 : 00000000  r1 : 84253800  r0 : 82e85800
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 30c5387d  Table: 84695f40  DAC: fffffffd
Register r0 information: slab kmalloc-2k start 82e85800 pointer offset 0 size 2048
Register r1 information: slab kmalloc-2k start 84253800 pointer offset 0 size 2048
Register r2 information: NULL pointer
Register r3 information: NULL pointer
Register r4 information: NULL pointer
Register r5 information: slab kmalloc-2k start 84253800 pointer offset 0 size 2048
Register r6 information: non-paged memory
Register r7 information: slab kmalloc-2k start 82e85800 pointer offset 844 size 2048
Register r8 information: non-paged memory
Register r9 information: slab kmalloc-2k start 82e85800 pointer offset 0 size 2048
Register r10 information: non-slab/vmalloc memory
Register r11 information: 2-page vmalloc region starting at 0xeac00000 allocated at kernel_clone+0xac/0x424 kernel/fork.c:2909
Register r12 information: 2-page vmalloc region starting at 0xeac00000 allocated at kernel_clone+0xac/0x424 kernel/fork.c:2909
Process kworker/u5:6 (pid: 1370, stack limit = 0xeac00000)
Stack: (0xeac01e48 to 0xeac02000)
1e40:                   8373e9c0 00000014 82e85800 82e85840 82e85b4c 82604d40
1e60: 82e85bcc 827e4691 eac01e9c eac01e78 807c9bf0 807c9608 00000000 eebfa1f0
1e80: 82e85bbc 82e85800 82e85840 82e85b4c eac01f04 eac01ea0 81826490 807c9bb4
1ea0: eac01ebc eac01eb0 0000cb1b 82e85800 00000000 eac01ec0 00000000 81824fc0
1ec0: 00000000 00000000 eac01ec8 eac01ec8 82e85800 eebfa1f0 eac01f48 83eda700
1ee0: 82e85bbc 82c21400 82c0f000 00000140 8373e9c0 82c21405 eac01f44 eac01f08
1f00: 80265fd4 818260f4 eac01f2c eac01f18 eac01f44 eac01f20 8026196c 83eda700
1f20: 83eda72c 82c0f000 82604d40 82c0f020 8373e9c0 61c88647 eac01f84 eac01f48
1f40: 80266520 80265e44 eac01f64 eac01f58 81847b70 80278e68 eac01f84 83e2e440
1f60: 8373e9c0 802662e0 83eda700 83e747c0 df901e98 00000000 eac01fac eac01f88
1f80: 8026d8e0 802662ec 83e2e440 8026d7dc 00000000 00000000 00000000 00000000
1fa0: 00000000 eac01fb0 80200104 8026d7e8 00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
Backtrace: 
[<807c95fc>] (__io_remove_buffers) from [<807c9bf0>] (io_destroy_buffers+0x48/0x138 io_uring/kbuf.c:264)
 r10:827e4691 r9:82e85bcc r8:82604d40 r7:82e85b4c r6:82e85840 r5:82e85800
 r4:00000014 r3:8373e9c0
[<807c9ba8>] (io_destroy_buffers) from [<81826490>] (io_ring_ctx_free io_uring/io_uring.c:2895 [inline])
[<807c9ba8>] (io_destroy_buffers) from [<81826490>] (io_ring_exit_work+0x3a8/0x5ec io_uring/io_uring.c:3151)
 r7:82e85b4c r6:82e85840 r5:82e85800 r4:82e85bbc
[<818260e8>] (io_ring_exit_work) from [<80265fd4>] (process_one_work+0x19c/0x4a8 kernel/workqueue.c:2630)
 r10:82c21405 r9:8373e9c0 r8:00000140 r7:82c0f000 r6:82c21400 r5:82e85bbc
 r4:83eda700
[<80265e38>] (process_one_work) from [<80266520>] (process_scheduled_works kernel/workqueue.c:2703 [inline])
[<80265e38>] (process_one_work) from [<80266520>] (worker_thread+0x240/0x48c kernel/workqueue.c:2784)
 r10:61c88647 r9:8373e9c0 r8:82c0f020 r7:82604d40 r6:82c0f000 r5:83eda72c
 r4:83eda700
[<802662e0>] (worker_thread) from [<8026d8e0>] (kthread+0x104/0x134 kernel/kthread.c:388)
 r10:00000000 r9:df901e98 r8:83e747c0 r7:83eda700 r6:802662e0 r5:8373e9c0
 r4:83e2e440
[<8026d7dc>] (kthread) from [<80200104>] (ret_from_fork+0x14/0x30 arch/arm/kernel/entry-common.S:134)
Exception stack(0xeac01fb0 to 0xeac01ff8)
1fa0:                                     00000000 00000000 00000000 00000000
1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8026d7dc r4:83e2e440
Code: 0a000022 e5913004 e1d120be e5d14013 (e1d380be) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	0a000022 	beq	0x90
   4:	e5913004 	ldr	r3, [r1, #4]
   8:	e1d120be 	ldrh	r2, [r1, #14]
   c:	e5d14013 	ldrb	r4, [r1, #19]
* 10:	e1d380be 	ldrh	r8, [r3, #14] <-- trapping instruction