LUN: removable file: (no medium)
Unable to handle kernel paging request at virtual address dfff800000000002
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
[dfff800000000002] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 10418 Comm: syz.4.1238 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 23400005 (nzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : fsg_common_set_num_buffers+0x60/0x1e8 drivers/usb/gadget/function/f_mass_storage.c:2762
lr : _kmalloc_noprof include/linux/slab.h:988 [inline]
lr : fsg_common_set_num_buffers+0x58/0x1e8 drivers/usb/gadget/function/f_mass_storage.c:2762
sp : ffff800093667980
x29: ffff800093667980 x28: ffff0000c9fdc0c0 x27: ffff8000836c9908
x26: ffff0000ca314800 x25: dfff800000000000 x24: dfff800000000000
x23: ffff7000126ccf3c x22: ffff0000f29dc000 x21: ffff0000d3c05800
x20: 0000000000000010 x19: 0000000000000000 x18: 00000000ffffffff
x17: ffff800080cc4178 x16: ffff800080cc3ff8 x15: 0000000020000300
x14: ffff80008b0df2b0 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000003 x9 : ffff800088bb0aa0
x8 : 0000000000000002 x7 : fefefefefefefefe x6 : 0000000000000000
x5 : 00000000ffffffff x4 : 0000000000000cc0 x3 : 0000000000004000
x2 : 0000000000004000 x1 : ffff0000d3a43b00 x0 : ffff0000f29dc000
Call trace:
 _kmalloc_noprof include/linux/slab.h:988 [inline] (P)
 fsg_common_set_num_buffers+0x60/0x1e8 drivers/usb/gadget/function/f_mass_storage.c:2762 (P)
 fsg_opts_num_buffers_store+0x11c/0x1ac drivers/usb/gadget/function/f_mass_storage.c:3451
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x27c/0x354 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Code: f2fbfff9 9751551c d343fe88 aa0003f6 (38796908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f2fbfff9 	movk	x25, #0xdfff, lsl #48
   4:	9751551c 	bl	0xfffffffffd455474
   8:	d343fe88 	lsr	x8, x20, #3
   c:	aa0003f6 	mov	x22, x0
* 10:	38796908 	ldrb	w8, [x8, x25] <-- trapping instruction