================================================================== 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:333 [inline] BUG: KASAN: stack-out-of-bounds in end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:160 Write of size 4 at addr ffffc9000314f928 by task ksoftirqd/1/21 CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.5.0-rc4-syzkaller-00227-g024ff300db33 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __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:333 [inline] end_buffer_read_sync+0x8f/0xe0 fs/buffer.c:160 end_bio_bh_io_sync+0xdd/0x130 fs/buffer.c:2794 bio_endio+0x593/0x6a0 block/bio.c:1617 req_bio_endio block/blk-mq.c:769 [inline] blk_update_request+0x67b/0x1780 block/blk-mq.c:914 blk_mq_end_request+0x57/0x3c0 block/blk-mq.c:1035 lo_complete_rq+0x1c4/0x270 drivers/block/loop.c:370 blk_complete_reqs+0xb2/0xf0 block/blk-mq.c:1113 __do_softirq+0x218/0x965 kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x67d/0xa00 kernel/smpboot.c:164 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 The buggy address belongs to the virtual mapping at [ffffc90003148000, ffffc90003151000) created by: kernel_clone+0xfd/0x8f0 kernel/fork.c:2912 The buggy address belongs to the physical page: page:ffffea00009fc300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27f0c 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 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 6114, tgid 6114 (syz-executor.0), ts 87558287245, free_ts 85990666168 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2292 vm_area_alloc_pages mm/vmalloc.c:3059 [inline] __vmalloc_area_node mm/vmalloc.c:3135 [inline] __vmalloc_node_range+0xa6e/0x1540 mm/vmalloc.c:3316 alloc_thread_stack_node kernel/fork.c:309 [inline] dup_task_struct kernel/fork.c:1113 [inline] copy_process+0x13f1/0x7400 kernel/fork.c:2330 kernel_clone+0xfd/0x8f0 kernel/fork.c:2912 __do_sys_clone3+0x1f1/0x260 kernel/fork.c:3213 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 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:1161 [inline] free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2489 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] mapping_try_invalidate+0x39a/0x480 mm/truncate.c:536 invalidate_bdev+0xb1/0xd0 block/bdev.c:87 ntfs_loadlog_and_replay+0x23e/0x5e0 fs/ntfs3/fsntfs.c:330 ntfs_fill_super+0x2737/0x43b0 fs/ntfs3/super.c:1224 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffffc9000314f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000314f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc9000314f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffffc9000314f980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000314fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================