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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+0xc1/0xd0 fs/buffer.c:161
Write of size 4 at addr ffffc9000eb1f6c0 by task ksoftirqd/1/22

CPU: 1 PID: 22 Comm: ksoftirqd/1 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x167/0x540 mm/kasan/report.c:488
 kasan_report+0x142/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 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+0xc1/0xd0 fs/buffer.c:161
 end_bio_bh_io_sync+0xbf/0x120 fs/buffer.c:2754
 req_bio_endio block/blk-mq.c:792 [inline]
 blk_update_request+0x55d/0x1050 block/blk-mq.c:937
 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1060
 blk_complete_reqs block/blk-mq.c:1135 [inline]
 blk_done_softirq+0x100/0x150 block/blk-mq.c:1140
 __do_softirq+0x2bb/0x942 kernel/softirq.c:553
 run_ksoftirqd+0xc5/0x130 kernel/softirq.c:921
 smpboot_thread_fn+0x543/0xa30 kernel/smpboot.c:164
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000eb18000, ffffc9000eb21000) created by:
 copy_process+0x5d5/0x3fc0 kernel/fork.c:2327

The buggy address belongs to the physical page:
page:ffffea0000b189c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2c627
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 9293, tgid 9293 (syz-executor119), ts 338409920665, free_ts 335752328683
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
 __alloc_pages+0x255/0x680 mm/page_alloc.c:4567
 alloc_pages_mpol+0x3de/0x650 mm/mempolicy.c:2133
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x9a3/0x14a0 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:307 [inline]
 dup_task_struct+0x3e9/0x7d0 kernel/fork.c:1112
 copy_process+0x5d5/0x3fc0 kernel/fork.c:2327
 kernel_clone+0x222/0x840 kernel/fork.c:2902
 __do_sys_clone3 kernel/fork.c:3203 [inline]
 __se_sys_clone3+0x2cb/0x350 kernel/fork.c:3187
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
page last free pid 5078 tgid 5078 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+0x95d/0xa80 mm/page_alloc.c:2346
 free_unref_page_list+0x5a3/0x850 mm/page_alloc.c:2532
 release_pages+0x2117/0x2400 mm/swap.c:1042
 __folio_batch_release+0x84/0x100 mm/swap.c:1062
 folio_batch_release include/linux/pagevec.h:83 [inline]
 truncate_inode_pages_range+0x457/0xf70 mm/truncate.c:362
 kill_bdev block/bdev.c:79 [inline]
 blkdev_flush_mapping+0x156/0x2b0 block/bdev.c:638
 blkdev_put_whole block/bdev.c:669 [inline]
 bdev_release+0x5cb/0x910 block/bdev.c:985
 blkdev_release+0x3b/0x50 block/fops.c:631
 __fput+0x429/0x8a0 fs/file_table.c:376
 __do_sys_close fs/open.c:1554 [inline]
 __se_sys_close fs/open.c:1539 [inline]
 __x64_sys_close+0x7e/0x110 fs/open.c:1539
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Memory state around the buggy address:
 ffffc9000eb1f580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000eb1f600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000eb1f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                              ^
 ffffc9000eb1f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000eb1f780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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