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BUG: KASAN: stack-out-of-bounds in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: stack-out-of-bounds in atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
BUG: KASAN: stack-out-of-bounds in put_bh include/linux/buffer_head.h:320 [inline]
BUG: KASAN: stack-out-of-bounds in end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:161
Write of size 4 at addr ffffc900048cf978 by task ksoftirqd/0/15

CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.2.0-syzkaller-06695-gd8ca6dbb8de7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x28/0x360 mm/kasan/report.c:306
 print_report mm/kasan/report.c:417 [inline]
 kasan_report+0x11c/0x130 mm/kasan/report.c:517
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x141/0x190 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_dec include/linux/atomic/atomic-instrumented.h:257 [inline]
 put_bh include/linux/buffer_head.h:320 [inline]
 end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:161
 end_bio_bh_io_sync+0xde/0x130 fs/buffer.c:2703
 bio_endio+0x651/0x810 block/bio.c:1606
 req_bio_endio block/blk-mq.c:795 [inline]
 blk_update_request+0x436/0x1650 block/blk-mq.c:927
 blk_mq_end_request+0x4f/0x80 block/blk-mq.c:1054
 lo_complete_rq+0x1c6/0x280 drivers/block/loop.c:370
 blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1132
 __do_softirq+0x2e3/0xae3 kernel/softirq.c:571
 run_ksoftirqd kernel/softirq.c:934 [inline]
 run_ksoftirqd+0x31/0x60 kernel/softirq.c:926
 smpboot_thread_fn+0x659/0xa20 kernel/smpboot.c:164
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc900048c8000, ffffc900048d1000) created by:
 kernel_clone+0xeb/0xa10 kernel/fork.c:2687

The buggy address belongs to the physical page:
page:ffffea0000712e40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c4b9
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
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 5070, tgid 5070 (syz-executor111), ts 118087996143, free_ts 117092263174
 prep_new_page mm/page_alloc.c:2531 [inline]
 get_page_from_freelist+0x119c/0x2d00 mm/page_alloc.c:4283
 __alloc_pages+0x1cb/0x5c0 mm/page_alloc.c:5549
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2287
 vm_area_alloc_pages mm/vmalloc.c:2989 [inline]
 __vmalloc_area_node mm/vmalloc.c:3057 [inline]
 __vmalloc_node_range+0xb3b/0x1310 mm/vmalloc.c:3227
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct kernel/fork.c:987 [inline]
 copy_process+0x1320/0x76c0 kernel/fork.c:2103
 kernel_clone+0xeb/0xa10 kernel/fork.c:2687
 __do_sys_clone+0xba/0x100 kernel/fork.c:2828
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1446 [inline]
 free_pcp_prepare+0x66a/0xc30 mm/page_alloc.c:1496
 free_unref_page_prepare mm/page_alloc.c:3369 [inline]
 free_unref_page_list+0x176/0xcd0 mm/page_alloc.c:3510
 release_pages+0xcd7/0x1380 mm/swap.c:1046
 tlb_batch_pages_flush+0xa8/0x1a0 mm/mmu_gather.c:97
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu mm/mmu_gather.c:299 [inline]
 tlb_finish_mmu+0x14b/0x7e0 mm/mmu_gather.c:391
 exit_mmap+0x202/0x7c0 mm/mmap.c:3100
 __mmput+0x128/0x4c0 kernel/fork.c:1212
 mmput+0x60/0x70 kernel/fork.c:1234
 exit_mm kernel/exit.c:563 [inline]
 do_exit+0x9d7/0x2a40 kernel/exit.c:856
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1019
 __do_sys_exit_group kernel/exit.c:1030 [inline]
 __se_sys_exit_group kernel/exit.c:1028 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1028
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffffc900048cf800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900048cf880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900048cf900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                                ^
 ffffc900048cf980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900048cfa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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