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BUG: KASAN: out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: out-of-bounds in atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
BUG: KASAN: out-of-bounds in put_bh include/linux/buffer_head.h:284 [inline]
BUG: KASAN: out-of-bounds in end_buffer_read_sync+0x85/0x90 fs/buffer.c:160
Write of size 4 at addr ffffc900027fe660 by task ksoftirqd/1/22

CPU: 1 PID: 22 Comm: ksoftirqd/1 Not tainted 5.19.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x12a/0x1be lib/dump_stack.c:106
 print_address_description+0x65/0x4b0 mm/kasan/report.c:313
 print_report+0xf4/0x1e0 mm/kasan/report.c:429
 kasan_report+0xc3/0xf0 mm/kasan/report.c:491
 kasan_check_range+0x2a7/0x2e0 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
 put_bh include/linux/buffer_head.h:284 [inline]
 end_buffer_read_sync+0x85/0x90 fs/buffer.c:160
 end_bio_bh_io_sync+0x87/0xd0 fs/buffer.c:2993
 req_bio_endio block/blk-mq.c:687 [inline]
 blk_update_request+0x3c4/0x1040 block/blk-mq.c:816
 blk_mq_end_request+0x34/0x60 block/blk-mq.c:942
 blk_complete_reqs block/blk-mq.c:1013 [inline]
 blk_done_softirq+0x95/0x140 block/blk-mq.c:1018
 __do_softirq+0x362/0x773 kernel/softirq.c:571
 run_ksoftirqd+0xa2/0x100 kernel/softirq.c:934
 smpboot_thread_fn+0x523/0x880 kernel/smpboot.c:164
 kthread+0x228/0x2a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc900027f8000, ffffc90002801000) created by:
 dup_task_struct+0x55/0x440 kernel/fork.c:977

The buggy address belongs to the physical page:
page:ffffea00005f8e40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17e39
memcg:ffff88801bf76502
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff88801bf76502
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 4074, tgid 4074 (syz-executor.0), ts 362073228118, free_ts 362056480099
 prep_new_page mm/page_alloc.c:2456 [inline]
 get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4198
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5426
 vm_area_alloc_pages mm/vmalloc.c:2927 [inline]
 __vmalloc_area_node mm/vmalloc.c:2995 [inline]
 __vmalloc_node_range+0x66f/0xfc0 mm/vmalloc.c:3165
 alloc_thread_stack_node+0x27f/0x410 kernel/fork.c:312
 dup_task_struct+0x55/0x440 kernel/fork.c:977
 copy_process+0x3e1/0x3a40 kernel/fork.c:2071
 kernel_clone+0x16e/0x610 kernel/fork.c:2655
 __do_sys_clone kernel/fork.c:2789 [inline]
 __se_sys_clone kernel/fork.c:2773 [inline]
 __x64_sys_clone+0x223/0x280 kernel/fork.c:2773
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1371 [inline]
 free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1421
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page_list+0x12c/0x830 mm/page_alloc.c:3475
 release_pages+0x1cfc/0x1ed0 mm/swap.c:980
 __pagevec_release+0x5f/0xd0 mm/swap.c:1000
 pagevec_release include/linux/pagevec.h:82 [inline]
 folio_batch_release include/linux/pagevec.h:146 [inline]
 truncate_inode_pages_range+0x405/0x1180 mm/truncate.c:373
 kill_bdev block/bdev.c:77 [inline]
 blkdev_flush_mapping+0x17d/0x2e0 block/bdev.c:663
 blkdev_put_whole block/bdev.c:694 [inline]
 blkdev_put+0x3ca/0x5c0 block/bdev.c:954
 deactivate_locked_super+0x82/0xd0 fs/super.c:332
 cleanup_mnt+0x3dc/0x480 fs/namespace.c:1186
 task_work_run+0xd6/0x160 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Memory state around the buggy address:
 ffffc900027fe500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900027fe580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900027fe600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                          ^
 ffffc900027fe680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900027fe700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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