loop3: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN: slab-out-of-bounds in nilfs_iget_test+0xa1/0x330 fs/nilfs2/inode.c:544 Read of size 8 at addr ffff888040372378 by task syz-executor.3/25178 CPU: 1 PID: 25178 Comm: syz-executor.3 Not tainted 6.1.0-rc7-syzkaller-00012-gca57f02295f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 nilfs_iget_test+0xa1/0x330 fs/nilfs2/inode.c:544 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 nilfs_iget_locked+0x140/0x1d0 fs/nilfs2/inode.c:605 nilfs_dat_read+0xbd/0x300 fs/nilfs2/dat.c:483 nilfs_load_super_root fs/nilfs2/the_nilfs.c:120 [inline] load_nilfs+0x4c8/0xfc0 fs/nilfs2/the_nilfs.c:269 nilfs_fill_super+0x27e/0x5d0 fs/nilfs2/super.c:1059 nilfs_mount+0x613/0x9b0 fs/nilfs2/super.c:1315 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1531 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 RIP: 0033:0x7f72eaa8d60a 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:00007f72eb848f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000a1d RCX: 00007f72eaa8d60a RDX: 0000000020000a40 RSI: 0000000020000a80 RDI: 00007f72eb848fe0 RBP: 00007f72eb849020 R08: 00007f72eb849020 R09: 0000000000000808 R10: 0000000000000808 R11: 0000000000000202 R12: 0000000020000a40 R13: 0000000020000a80 R14: 00007f72eb848fe0 R15: 0000000020000080 Allocated by task 14235: 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:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x180/0x2e0 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3125 [inline] f2fs_alloc_inode+0x14d/0x520 fs/f2fs/super.c:1366 alloc_inode fs/inode.c:259 [inline] iget_locked+0x191/0x830 fs/inode.c:1286 f2fs_iget+0x51/0x4bb0 fs/f2fs/inode.c:505 f2fs_lookup+0x391/0x880 fs/f2fs/namei.c:548 __lookup_hash+0x115/0x240 fs/namei.c:1601 do_renameat2+0x4cb/0x1370 fs/namei.c:4873 __do_sys_rename fs/namei.c:4976 [inline] __se_sys_rename fs/namei.c:4974 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:4974 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:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481 call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2798 dispose_list fs/inode.c:697 [inline] evict_inodes+0x658/0x700 fs/inode.c:747 generic_shutdown_super+0x94/0x310 fs/super.c:480 kill_block_super+0x79/0xd0 fs/super.c:1428 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4612 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1186 task_work_run+0x243/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296 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:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481 call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2798 dispose_list fs/inode.c:697 [inline] evict_inodes+0x658/0x700 fs/inode.c:747 generic_shutdown_super+0x94/0x310 fs/super.c:480 kill_block_super+0x79/0xd0 fs/super.c:1428 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4612 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1186 task_work_run+0x243/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296 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 ffff888040371aa0 which belongs to the cache f2fs_inode_cache of size 2144 The buggy address is located 120 bytes to the right of 2144-byte region [ffff888040371aa0, ffff888040372300) The buggy address belongs to the physical page: page:ffffea000100dc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888040370000 pfn:0x40370 head:ffffea000100dc00 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888027bb6701 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0000b45e00 dead000000000003 ffff888146c67780 raw: ffff888040370000 00000000800e000a 00000001ffffffff ffff888027bb6701 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 7927, tgid 7926 (syz-executor.0), ts 254882524208, free_ts 253755259458 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4291 __alloc_pages+0x259/0x560 mm/page_alloc.c:5558 alloc_slab_page+0x70/0xf0 mm/slub.c:1794 allocate_slab+0x5e/0x4b0 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc_lru+0x233/0x2e0 mm/slub.c:3429 alloc_inode_sb include/linux/fs.h:3125 [inline] f2fs_alloc_inode+0x14d/0x520 fs/f2fs/super.c:1366 alloc_inode fs/inode.c:259 [inline] iget_locked+0x191/0x830 fs/inode.c:1286 f2fs_iget+0x51/0x4bb0 fs/f2fs/inode.c:505 f2fs_lookup+0x391/0x880 fs/f2fs/namei.c:548 __lookup_hash+0x115/0x240 fs/namei.c:1601 do_renameat2+0x4cb/0x1370 fs/namei.c:4873 __do_sys_rename fs/namei.c:4976 [inline] __se_sys_rename fs/namei.c:4974 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:4974 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3483 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 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:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x1cc/0x300 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:679 [inline] __alloc_file+0x26/0x230 fs/file_table.c:138 alloc_empty_file+0xa9/0x1b0 fs/file_table.c:187 path_openat+0xf1/0x2df0 fs/namei.c:3700 do_filp_open+0x264/0x4f0 fs/namei.c:3741 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 Memory state around the buggy address: ffff888040372200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888040372280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888040372300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888040372380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888040372400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================