================================================================== BUG: KASAN: slab-out-of-bounds in get_node_id fs/fuse/fuse_i.h:886 [inline] BUG: KASAN: slab-out-of-bounds in fuse_inode_eq+0x50/0x70 fs/fuse/inode.c:341 Read of size 8 at addr ffff88802ddc2c58 by task syz-executor.1/32284 CPU: 1 PID: 32284 Comm: syz-executor.1 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x65/0x4b0 mm/kasan/report.c:317 print_report+0x108/0x1f0 mm/kasan/report.c:433 kasan_report+0xc3/0xf0 mm/kasan/report.c:495 get_node_id fs/fuse/fuse_i.h:886 [inline] fuse_inode_eq+0x50/0x70 fs/fuse/inode.c:341 find_inode+0x1ac/0x4c0 fs/inode.c:915 ilookup5_nowait fs/inode.c:1428 [inline] ilookup5+0x9d/0x1d0 fs/inode.c:1457 iget5_locked+0x33/0x270 fs/inode.c:1238 fuse_iget+0x1c3/0x800 fs/fuse/inode.c:382 fuse_lookup_name+0x667/0x830 fs/fuse/dir.c:403 fuse_lookup+0x13e/0x5d0 fs/fuse/dir.c:433 fuse_atomic_open+0x1ed/0x18a0 fs/fuse/dir.c:662 atomic_open fs/namei.c:3276 [inline] lookup_open fs/namei.c:3384 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0xf39/0x2df0 fs/namei.c:3688 do_filp_open+0x264/0x4f0 fs/namei.c:3718 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 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: 0033:0x7fdf1d08b5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdf1e10e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fdf1d1abf80 RCX: 00007fdf1d08b5a9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007fdf1d0e6580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe04ad45df R14: 00007fdf1e10e300 R15: 0000000000022000 Allocated by task 9148: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] __kasan_slab_alloc+0xa3/0xd0 mm/kasan/common.c:470 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x175/0x2d0 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3107 [inline] nilfs_alloc_inode+0x27/0xe0 fs/nilfs2/super.c:154 alloc_inode fs/inode.c:259 [inline] iget5_locked+0x9c/0x270 fs/inode.c:1241 nilfs_iget_locked+0x140/0x1d0 fs/nilfs2/inode.c:588 nilfs_ifile_read+0x2e/0x170 fs/nilfs2/ifile.c:187 nilfs_attach_checkpoint+0x229/0x4a0 fs/nilfs2/super.c:541 nilfs_fill_super+0x2e8/0x5d0 fs/nilfs2/super.c:1064 nilfs_mount+0x613/0x9b0 fs/nilfs2/super.c:1317 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568 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 Last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:348 call_rcu+0x163/0x970 kernel/rcu/tree.c:2796 nilfs_mdt_clear+0xd8/0x110 fs/nilfs2/mdt.c:484 nilfs_clear_inode+0xc5/0x2c0 fs/nilfs2/inode.c:886 nilfs_evict_inode+0xe5/0x3d0 fs/nilfs2/inode.c:908 evict+0x2a4/0x620 fs/inode.c:664 nilfs_put_super+0x117/0x150 fs/nilfs2/super.c:478 generic_shutdown_super+0x130/0x310 fs/super.c:491 kill_block_super+0x79/0xd0 fs/super.c:1427 deactivate_locked_super+0xa7/0xf0 fs/super.c:331 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:348 call_rcu+0x163/0x970 kernel/rcu/tree.c:2796 nilfs_put_root+0x93/0xb0 fs/nilfs2/the_nilfs.c:802 nilfs_segctor_destroy fs/nilfs2/segment.c:2747 [inline] nilfs_detach_log_writer+0x8d5/0xbd0 fs/nilfs2/segment.c:2810 nilfs_put_super+0x4b/0x150 fs/nilfs2/super.c:468 generic_shutdown_super+0x130/0x310 fs/super.c:491 kill_block_super+0x79/0xd0 fs/super.c:1427 deactivate_locked_super+0xa7/0xf0 fs/super.c:331 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88802ddc2670 which belongs to the cache nilfs2_inode_cache of size 1512 The buggy address is located 0 bytes to the right of 1512-byte region [ffff88802ddc2670, ffff88802ddc2c58) The buggy address belongs to the physical page: page:ffffea0000b77000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ddc0 head:ffffea0000b77000 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888059d75501 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0000b73400 dead000000000002 ffff88801c65bb40 raw: 0000000000000000 0000000080130013 00000001ffffffff ffff888059d75501 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 5259, tgid 5258 (syz-executor.2), ts 130354853697, free_ts 118895687116 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0x70/0xf0 mm/slub.c:1829 allocate_slab+0x5e/0x520 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x3ee/0xc40 mm/slub.c:3036 __slab_alloc mm/slub.c:3123 [inline] slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x225/0x2d0 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3107 [inline] nilfs_alloc_inode+0x27/0xe0 fs/nilfs2/super.c:154 alloc_inode fs/inode.c:259 [inline] iget5_locked+0x9c/0x270 fs/inode.c:1241 nilfs_attach_btree_node_cache+0x2c9/0x440 fs/nilfs2/inode.c:666 nilfs_btree_prepare_convert_and_insert fs/nilfs2/btree.c:1746 [inline] nilfs_btree_convert_and_insert+0x220/0x16a0 fs/nilfs2/btree.c:1878 nilfs_bmap_do_insert fs/nilfs2/bmap.c:111 [inline] nilfs_bmap_insert+0x18c/0x360 fs/nilfs2/bmap.c:147 nilfs_mdt_insert_new_block fs/nilfs2/mdt.c:44 [inline] nilfs_mdt_create_block fs/nilfs2/mdt.c:93 [inline] nilfs_mdt_get_block+0x336/0x820 fs/nilfs2/mdt.c:255 nilfs_palloc_get_block+0x142/0x240 fs/nilfs2/alloc.c:216 nilfs_palloc_get_desc_block fs/nilfs2/alloc.c:265 [inline] nilfs_palloc_prepare_alloc_entry+0x3ab/0x1000 fs/nilfs2/alloc.c:524 nilfs_ifile_create_inode+0xd2/0x2f0 fs/nilfs2/ifile.c:64 nilfs_new_inode+0x1e1/0x8a0 fs/nilfs2/inode.c:346 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3476 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc+0x1a6/0x310 mm/slub.c:3273 getname_flags+0xb8/0x4e0 fs/namei.c:139 vfs_fstatat fs/stat.c:266 [inline] __do_sys_newfstatat fs/stat.c:437 [inline] __se_sys_newfstatat+0xcb/0x7d0 fs/stat.c:431 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: ffff88802ddc2b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802ddc2b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802ddc2c00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc ^ ffff88802ddc2c80: fc fc fc fc fc fc fc fc fc fc fc fb fb fb fb fb ffff88802ddc2d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================