loop1: 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 ffff88808ccba378 by task syz-executor.1/13707 CPU: 1 PID: 13707 Comm: syz-executor.1 Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #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: 0033:0x7f805168cb6a 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:00007f8052421f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f805168cb6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f8052421fe0 RBP: 00007f8052422020 R08: 00007f8052422020 R09: 0000000020000000 R10: 0000000000004000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f8052421fe0 R15: 0000000020000fc0 Allocated by task 12786: 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:3117 [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_fill_super+0x38b1/0x6c40 fs/f2fs/super.c:4222 mount_bdev+0x26c/0x3a0 fs/super.c:1401 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 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 f2fs_fill_super+0x3c5e/0x6c40 fs/f2fs/super.c:4534 mount_bdev+0x26c/0x3a0 fs/super.c:1401 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 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 f2fs_fill_super+0x5669/0x6c40 fs/f2fs/super.c:4516 mount_bdev+0x26c/0x3a0 fs/super.c:1401 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 The buggy address belongs to the object at ffff88808ccb9aa0 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 [ffff88808ccb9aa0, ffff88808ccba300) The buggy address belongs to the physical page: page:ffffea0002332e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88808ccb9aa0 pfn:0x8ccb8 head:ffffea0002332e00 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888077965a01 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff88801ca82a00 raw: ffff88808ccb9aa0 00000000800e000c 00000001ffffffff ffff888077965a01 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 11233, tgid 11231 (syz-executor.2), ts 281566872083, free_ts 242828325982 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4288 __alloc_pages+0x259/0x560 mm/page_alloc.c:5555 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:3117 [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_fill_super+0x38b1/0x6c40 fs/f2fs/super.c:4222 mount_bdev+0x26c/0x3a0 fs/super.c:1401 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 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 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2586 put_cpu_partial+0x106/0x170 mm/slub.c:2662 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] __kmem_cache_alloc_node+0x1d7/0x310 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0x9e/0x1a0 mm/slab_common.c:968 kmalloc_array include/linux/slab.h:605 [inline] kcalloc include/linux/slab.h:636 [inline] ext4_find_extent+0x342/0xd90 fs/ext4/extents.c:914 ext4_ext_map_blocks+0x1d9/0x6880 fs/ext4/extents.c:4103 ext4_map_blocks+0xa49/0x1cc0 fs/ext4/inode.c:645 ext4_convert_unwritten_extents+0x2ed/0x700 fs/ext4/extents.c:4812 ext4_convert_unwritten_io_end_vec+0x11c/0x1d0 fs/ext4/extents.c:4851 ext4_end_io_end fs/ext4/page-io.c:186 [inline] ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline] ext4_end_io_rsv_work+0x380/0x6f0 fs/ext4/page-io.c:273 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 Memory state around the buggy address: ffff88808ccba200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88808ccba280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88808ccba300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88808ccba380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808ccba400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================