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BUG: KASAN: stack-out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: stack-out-of-bounds in atomic_dec include/linux/atomic/atomic-instrumented.h:592 [inline]
BUG: KASAN: stack-out-of-bounds in put_bh include/linux/buffer_head.h:306 [inline]
BUG: KASAN: stack-out-of-bounds in end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:161
Write of size 4 at addr ffffc9000c0ef898 by task ksoftirqd/1/22

CPU: 1 PID: 22 Comm: ksoftirqd/1 Not tainted 6.6.0-syzkaller-16176-g1b907d050735 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 check_region_inline mm/kasan/generic.c:181 [inline]
 kasan_check_range+0xef/0x190 mm/kasan/generic.c:187
 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:306 [inline]
 end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:161
 end_bio_bh_io_sync+0xdd/0x130 fs/buffer.c:2775
 bio_endio+0x593/0x6a0 block/bio.c:1603
 req_bio_endio block/blk-mq.c:788 [inline]
 blk_update_request+0x67b/0x1780 block/blk-mq.c:933
 blk_mq_end_request+0x57/0x520 block/blk-mq.c:1056
 lo_complete_rq+0x232/0x2f0 drivers/block/loop.c:370
 blk_complete_reqs+0xb2/0xf0 block/blk-mq.c:1131
 __do_softirq+0x21a/0x968 kernel/softirq.c:553
 run_ksoftirqd kernel/softirq.c:921 [inline]
 run_ksoftirqd+0x31/0x60 kernel/softirq.c:913
 smpboot_thread_fn+0x660/0xa00 kernel/smpboot.c:164
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000c0e8000, ffffc9000c0f1000) created by:
 kernel_clone+0xfd/0x920 kernel/fork.c:2907

The buggy address belongs to the physical page:
page:ffffea0001f02540 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7c095
memcg:ffff888020044602
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff888020044602
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 5993, tgid 5993 (syz-executor.4), ts 99328475595, free_ts 99313805964
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0xa25/0x36c0 mm/page_alloc.c:3312
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4568
 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x8f3/0x1bf0 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1118 [inline]
 copy_process+0x13e3/0x74b0 kernel/fork.c:2332
 kernel_clone+0xfd/0x920 kernel/fork.c:2907
 __do_sys_clone3+0x1f1/0x260 kernel/fork.c:3208
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2347
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2533
 release_pages+0x32a/0x14e0 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:371
 kill_bdev block/bdev.c:76 [inline]
 blkdev_flush_mapping+0x156/0x320 block/bdev.c:630
 blkdev_put_whole+0xb9/0xe0 block/bdev.c:661
 blkdev_put+0x40f/0x8e0 block/bdev.c:942
 bdev_release+0x4f/0x80 block/bdev.c:952
 blkdev_release+0x37/0x50 block/fops.c:616
 __fput+0x270/0xbb0 fs/file_table.c:394
 __fput_sync+0x47/0x50 fs/file_table.c:475
 __do_sys_close fs/open.c:1590 [inline]
 __se_sys_close fs/open.c:1575 [inline]
 __x64_sys_close+0x87/0xf0 fs/open.c:1575
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Memory state around the buggy address:
 ffffc9000c0ef780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000c0ef800: 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00
>ffffc9000c0ef880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                            ^
 ffffc9000c0ef900: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffffc9000c0ef980: 00 f2 f2 f2 00 00 00 f3 f3 f3 f3 f3 00 00 00 00
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