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BUG: KASAN: out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: out-of-bounds in atomic_dec include/linux/atomic/atomic-instrumented.h:592 [inline]
BUG: KASAN: out-of-bounds in put_bh include/linux/buffer_head.h:303 [inline]
BUG: KASAN: out-of-bounds in end_buffer_read_sync+0x93/0xe0 fs/buffer.c:161
Write of size 4 at addr ffffc90020f37890 by task ksoftirqd/1/27

CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:488
 kasan_report+0xda/0x110 mm/kasan/report.c:601
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_dec include/linux/atomic/atomic-instrumented.h:592 [inline]
 put_bh include/linux/buffer_head.h:303 [inline]
 end_buffer_read_sync+0x93/0xe0 fs/buffer.c:161
 end_bio_bh_io_sync+0xdd/0x140 fs/buffer.c:2754
 bio_endio+0x59c/0x6b0 block/bio.c:1608
 req_bio_endio block/blk-mq.c:792 [inline]
 blk_update_request+0x635/0x1710 block/blk-mq.c:937
 blk_mq_end_request+0x4f/0x90 block/blk-mq.c:1060
 lo_complete_rq+0x232/0x2f0 drivers/block/loop.c:366
 blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1135
 __do_softirq+0x21c/0x8e7 kernel/softirq.c:553
 run_ksoftirqd kernel/softirq.c:921 [inline]
 run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
 smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90020f30000, ffffc90020f39000) created by:
 kernel_clone+0xfd/0x930 kernel/fork.c:2902

The buggy address belongs to the physical page:
page:ffffea0000b8b400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2e2d0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 11887, tgid 11887 (syz-executor255), ts 1427822864377, free_ts 1427664117603
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311
 __alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567
 alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:307 [inline]
 dup_task_struct kernel/fork.c:1112 [inline]
 copy_process+0x150b/0x97b0 kernel/fork.c:2327
 kernel_clone+0xfd/0x930 kernel/fork.c:2902
 __do_sys_clone3+0x1f5/0x270 kernel/fork.c:3203
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
page last free pid 5247 tgid 5247 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2346
 free_unref_page_list+0xe6/0xb40 mm/page_alloc.c:2532
 release_pages+0x32a/0x14f0 mm/swap.c:1042
 __folio_batch_release+0x77/0xe0 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 truncate_inode_pages_range+0x33e/0xf00 mm/truncate.c:362
 kill_bdev block/bdev.c:79 [inline]
 blkdev_flush_mapping+0x144/0x310 block/bdev.c:638
 blkdev_put_whole+0xc4/0xf0 block/bdev.c:669
 bdev_release+0x509/0xa80 block/bdev.c:985
 kill_block_super+0x77/0x90 fs/super.c:1683
 ntfs3_kill_sb+0x3f/0xf0 fs/ntfs3/super.c:1785
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:477
 deactivate_super+0xde/0x100 fs/super.c:510
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x14f/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:108 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x281/0x2b0 kernel/entry/common.c:212
 do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89

Memory state around the buggy address:
 ffffc90020f37780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90020f37800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90020f37880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                            ^
 ffffc90020f37900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90020f37980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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