XFS (loop1): Starting recovery (logdev: internal) ================================================================== BUG: KASAN: slab-out-of-bounds in xfs_btree_lookup_get_block+0x15c/0x6d0 fs/xfs/libxfs/xfs_btree.c:1813 Read of size 8 at addr ffff88801cc8ffc0 by task syz-executor.1/25687 CPU: 0 PID: 25687 Comm: syz-executor.1 Not tainted 6.2.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 xfs_btree_lookup_get_block+0x15c/0x6d0 fs/xfs/libxfs/xfs_btree.c:1813 xfs_btree_lookup+0x346/0x12c0 fs/xfs/libxfs/xfs_btree.c:1913 xfs_btree_simple_query_range+0xde/0x6a0 fs/xfs/libxfs/xfs_btree.c:4718 xfs_btree_query_range+0x2db/0x380 fs/xfs/libxfs/xfs_btree.c:4958 xfs_refcount_recover_cow_leftovers+0x2d1/0xa60 fs/xfs/libxfs/xfs_refcount.c:1946 xfs_reflink_recover_cow+0xab/0x1b0 fs/xfs/xfs_reflink.c:928 xlog_recover_finish+0x824/0x920 fs/xfs/xfs_log_recover.c:3493 xfs_log_mount_finish+0x1ec/0x3d0 fs/xfs/xfs_log.c:829 xfs_mountfs+0x146a/0x1ef0 fs/xfs/xfs_mount.c:933 xfs_fs_fill_super+0xf95/0x11f0 fs/xfs/xfs_super.c:1666 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb28788d5fa Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb288590f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000009712 RCX: 00007fb28788d5fa RDX: 0000000020000100 RSI: 0000000020009640 RDI: 00007fb288590fe0 RBP: 00007fb288591020 R08: 00007fb288591020 R09: 0000000000200800 R10: 0000000000200800 R11: 0000000000000202 R12: 0000000020000100 R13: 0000000020009640 R14: 00007fb288590fe0 R15: 0000000020000240 Allocated by task 23927: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc+0x1b3/0x350 mm/slub.c:3476 kmem_cache_zalloc include/linux/slab.h:710 [inline] xfs_btree_alloc_cursor fs/xfs/libxfs/xfs_btree.h:592 [inline] xfs_refcountbt_init_common fs/xfs/libxfs/xfs_refcount_btree.c:336 [inline] xfs_refcountbt_init_cursor+0x84/0x330 fs/xfs/libxfs/xfs_refcount_btree.c:363 xfs_refcount_recover_cow_leftovers+0x213/0xa60 fs/xfs/libxfs/xfs_refcount.c:1939 xfs_reflink_recover_cow+0xab/0x1b0 fs/xfs/xfs_reflink.c:928 xlog_recover_finish+0x824/0x920 fs/xfs/xfs_log_recover.c:3493 xfs_log_mount_finish+0x1ec/0x3d0 fs/xfs/xfs_log.c:829 xfs_mountfs+0x146a/0x1ef0 fs/xfs/xfs_mount.c:933 xfs_fs_fill_super+0xf95/0x11f0 fs/xfs/xfs_super.c:1666 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88801cc8fe70 which belongs to the cache xfs_refcbt_cur of size 200 The buggy address is located 136 bytes to the right of 200-byte region [ffff88801cc8fe70, ffff88801cc8ff38) The buggy address belongs to the physical page: page:ffffea00007323c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801cc8fa50 pfn:0x1cc8f anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff88801c341500 0000000000000000 0000000000000001 raw: ffff88801cc8fa50 00000000800f000d 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 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 6665, tgid 6656 (syz-executor.5), ts 248840107360, free_ts 236881035988 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc+0x268/0x350 mm/slub.c:3476 kmem_cache_zalloc include/linux/slab.h:710 [inline] xfs_btree_alloc_cursor fs/xfs/libxfs/xfs_btree.h:592 [inline] xfs_refcountbt_init_common fs/xfs/libxfs/xfs_refcount_btree.c:336 [inline] xfs_refcountbt_init_cursor+0x84/0x330 fs/xfs/libxfs/xfs_refcount_btree.c:363 xfs_refcount_finish_one+0x33f/0x9a0 fs/xfs/libxfs/xfs_refcount.c:1377 xfs_trans_log_finish_refcount_update fs/xfs/xfs_refcount_item.c:264 [inline] xfs_refcount_update_finish_item+0x119/0x340 fs/xfs/xfs_refcount_item.c:387 xfs_defer_finish_one fs/xfs/libxfs/xfs_defer.c:479 [inline] xfs_defer_finish_noroll+0x1040/0x1860 fs/xfs/libxfs/xfs_defer.c:563 __xfs_trans_commit+0x3ef/0x1060 fs/xfs/xfs_trans.c:970 xfs_reflink_remap_extent+0xc63/0xd90 fs/xfs/xfs_reflink.c:1332 xfs_reflink_remap_blocks+0x32b/0x6e0 fs/xfs/xfs_reflink.c:1398 xfs_file_remap_range+0x364/0x670 fs/xfs/xfs_file.c:1136 vfs_copy_file_range+0x1204/0x1670 fs/read_write.c:1518 __do_sys_copy_file_range fs/read_write.c:1596 [inline] __se_sys_copy_file_range+0x3f9/0x5e0 fs/read_write.c:1559 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+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 discard_slab mm/slub.c:2098 [inline] __unfreeze_partials+0x1a5/0x1e0 mm/slub.c:2637 put_cpu_partial+0x106/0x170 mm/slub.c:2713 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x1e0/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node+0x9e/0x190 mm/slab_common.c:975 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x6e/0x180 mm/util.c:581 kvmalloc include/linux/slab.h:737 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x1f6/0xd30 fs/seq_file.c:210 call_read_iter include/linux/fs.h:2183 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7ac/0xbf0 fs/read_write.c:470 ksys_read+0x177/0x2a0 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88801cc8fe80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801cc8ff00: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc >ffff88801cc8ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88801cc90000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801cc90080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc ==================================================================