loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. (syz.0.0,5330,0):ocfs2_check_set_options:1244 ERROR: Invalid heartbeat mount options loop0: detected capacity change from 32768 to 32767 OCFS2: ERROR (device loop0): int ocfs2_validate_inode_block(struct super_block *, struct buffer_head *): Invalid dinode #17058: signature = Í:`¥ On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.0.0,5330,0):ocfs2_assign_bh:2417 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_inode_lock_full_nested:2512 ERROR: status = -30 (syz.0.0,5330,0):ocfs2_reflink_inodes_lock:4747 ERROR: status = -30 ================================================================== BUG: KASAN: use-after-free in memcpy_from_folio include/linux/highmem.h:586 [inline] BUG: KASAN: use-after-free in ocfs2_write_end_inline fs/ocfs2/aops.c:1917 [inline] BUG: KASAN: use-after-free in ocfs2_write_end_nolock+0xbd9/0x18c0 fs/ocfs2/aops.c:1951 Write of size 4086 at addr ffff8880004c64d2 by task syz.0.0/5330 CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description+0x55/0x1e0 mm/kasan/report.c:378 print_report+0x58/0x70 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 memcpy_from_folio include/linux/highmem.h:586 [inline] ocfs2_write_end_inline fs/ocfs2/aops.c:1917 [inline] ocfs2_write_end_nolock+0xbd9/0x18c0 fs/ocfs2/aops.c:1951 ocfs2_write_end+0x58/0x90 fs/ocfs2/aops.c:2061 generic_perform_write+0x620/0x8f0 mm/filemap.c:4345 ocfs2_file_write_iter+0x1663/0x1e70 fs/ocfs2/file.c:2476 iter_file_splice_write+0x9a1/0x10f0 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1159 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x195/0x290 fs/splice.c:1228 vfs_copy_file_range+0xb02/0x1370 fs/read_write.c:1634 __do_sys_copy_file_range fs/read_write.c:1683 [inline] __se_sys_copy_file_range+0x2fb/0x480 fs/read_write.c:1650 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fba2af9c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fba2bda4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 RAX: ffffffffffffffda RBX: 00007fba2b215fa0 RCX: 00007fba2af9c819 RDX: 0000000000000007 RSI: 00002000000001c0 RDI: 0000000000000008 RBP: 00007fba2b032c91 R08: ffffffffa003e45b R09: 0700000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fba2b216038 R14: 00007fba2b215fa0 R15: 00007fff101f6978 The buggy address belongs to the physical page: page: refcount:2 mapcount:0 mapping:ffff88801cc25938 index:0x854 pfn:0x4c6 memcg:ffff88801c6c8e00 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0x7ff58000004024(referenced|lru|private|node=0|zone=0|lastcpupid=0x7ff) raw: 007ff58000004024 ffffea000000fe88 ffff88801c6dd4b0 ffff88801cc25938 raw: 0000000000000854 ffff888047d3b1d0 00000002ffffffff ffff88801c6c8e00 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5330, tgid 5329 (syz.0.0), ts 103083075471, free_ts 102540959689 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3938 __alloc_pages_slowpath+0x3b1/0xd40 mm/page_alloc.c:4774 __alloc_frozen_pages_noprof+0x322/0x380 mm/page_alloc.c:5231 alloc_pages_mpol+0x235/0x490 mm/mempolicy.c:2490 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline] alloc_pages_noprof+0xac/0x2a0 mm/mempolicy.c:2581 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2591 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013 __filemap_get_folio_mpol+0x3fc/0xb00 mm/filemap.c:2011 __filemap_get_folio include/linux/pagemap.h:763 [inline] grow_dev_folio fs/buffer.c:947 [inline] grow_buffers fs/buffer.c:1013 [inline] __getblk_slow fs/buffer.c:1031 [inline] bdev_getblk+0x1f6/0x6e0 fs/buffer.c:1351 __getblk include/linux/buffer_head.h:380 [inline] sb_getblk include/linux/buffer_head.h:386 [inline] ocfs2_read_blocks+0x56d/0x1530 fs/ocfs2/buffer_head_io.c:236 ocfs2_read_inode_block_full fs/ocfs2/inode.c:1745 [inline] ocfs2_read_inode_block+0xec/0x1d0 fs/ocfs2/inode.c:1759 ocfs2_assign_bh fs/ocfs2/dlmglue.c:2415 [inline] ocfs2_inode_lock_full_nested+0x2ac/0x1bd0 fs/ocfs2/dlmglue.c:2510 ocfs2_reflink_inodes_lock+0x489/0xc20 fs/ocfs2/refcounttree.c:4743 ocfs2_remap_file_range+0x236/0x6f0 fs/ocfs2/file.c:2721 vfs_copy_file_range+0xd80/0x1370 fs/read_write.c:1600 page last free pid 75 tgid 75 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1394 [inline] free_unref_folios+0xcec/0x1480 mm/page_alloc.c:2996 shrink_folio_list+0x4ad0/0x52f0 mm/vmscan.c:1605 evict_folios+0x453a/0x54d0 mm/vmscan.c:4724 try_to_shrink_lruvec+0xb62/0xfa0 mm/vmscan.c:4885 shrink_one+0x25c/0x710 mm/vmscan.c:4930 shrink_many mm/vmscan.c:4993 [inline] lru_gen_shrink_node mm/vmscan.c:5071 [inline] shrink_node+0x31bf/0x3ae0 mm/vmscan.c:6059 kswapd_shrink_node mm/vmscan.c:6913 [inline] balance_pgdat mm/vmscan.c:7089 [inline] kswapd+0x1736/0x2de0 mm/vmscan.c:7362 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff8880004c6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880004c6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880004c7000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880004c7080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880004c7100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================