Unable to handle kernel paging request at virtual address dfff80000000023d
Mem abort info:
  ESR = 0x0000000096000006
  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 = 0x00000006
  CM = 0, WnR = 0
[dfff80000000023d] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 5189 Comm: syz.1.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 224000c5 (nzCv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : mem_cgroup_track_foreign_dirty_slowpath+0xec/0x964 mm/memcontrol.c:4620
lr : trace_track_foreign_dirty include/trace/events/writeback.h:237 [inline]
lr : mem_cgroup_track_foreign_dirty_slowpath+0xdc/0x964 mm/memcontrol.c:4611
sp : ffff80001f946f10
x29: ffff80001f946f30 x28: 1fffff800064c4e9 x27: 0000000000000000
x26: dfff800000000000 x25: dfff800000000000 x24: 05ffc0000042a10f
x23: ffff0000cce205e0 x22: 00000000000011e8 x21: ffff80001429d110
x20: 0000000000000000 x19: ffff0000cce20060 x18: 0000000000000001
x17: 0000000000000000 x16: ffff80001125a830 x15: 0000000000000004
x14: ffff700003f28dd8 x13: 1ffff0000285402b x12: 0000000000ff0100
x11: 0000000000000002 x10: 0000000000000003 x9 : ffff800014207780
x8 : 000000000000023d x7 : ffff80000888d2bc x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000002
x2 : 0000000000000010 x1 : ffff80001186e460 x0 : 0000000000000001
Call trace:
 mem_cgroup_track_foreign_dirty_slowpath+0xec/0x964 mm/memcontrol.c:4620
 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1593 [inline]
 account_page_dirtied mm/page-writeback.c:2485 [inline]
 __set_page_dirty+0x900/0xc6c mm/page-writeback.c:2522
 mark_buffer_dirty+0x27c/0x518 fs/buffer.c:1108
 __block_commit_write+0x1f8/0x340 fs/buffer.c:2085
 block_write_end+0x60/0x114 fs/buffer.c:2164
 blkdev_write_end+0x64/0x268 block/fops.c:381
 generic_perform_write+0x2cc/0x488 mm/filemap.c:3796
 __generic_file_write_iter+0x23c/0x454 mm/filemap.c:3912
 blkdev_write_iter+0x300/0x454 block/fops.c:537
 do_iter_readv_writev+0x3a8/0x50c fs/read_write.c:-1
 do_iter_write+0x1c4/0x670 fs/read_write.c:855
 vfs_iter_write+0x88/0xac fs/read_write.c:896
 iter_file_splice_write+0x520/0xa7c fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe4/0x134 fs/splice.c:956
 splice_direct_to_actor+0x3e0/0x998 fs/splice.c:902
 do_splice_direct+0x168/0x25c fs/splice.c:1008
 do_sendfile+0x478/0xcc8 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1303 [inline]
 __arm64_sys_sendfile64+0x134/0x3bc fs/read_write.c:1303
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 36002de0 52823d08 8b080296 d343fec8 (38796908) 
---[ end trace b6ea1c4871bc8480 ]---
----------------
Code disassembly (best guess):
   0:	36002de0 	tbz	w0, #0, 0x5bc
   4:	52823d08 	mov	w8, #0x11e8                	// #4584
   8:	8b080296 	add	x22, x20, x8
   c:	d343fec8 	lsr	x8, x22, #3
* 10:	38796908 	ldrb	w8, [x8, x25] <-- trapping instruction