loop2: 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 ffff888072af6248 by task syz-executor.2/12092 CPU: 0 PID: 12092 Comm: syz-executor.2 Not tainted 6.1.0-syzkaller-14321-g0a924817d2ed #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+0x1b1/0x290 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 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:490 nilfs_load_super_root fs/nilfs2/the_nilfs.c:121 [inline] load_nilfs+0x4c8/0xfa0 fs/nilfs2/the_nilfs.c:302 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: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: 0033:0x7f0eabe8d5da 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:00007f0eacb2af88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000a07 RCX: 00007f0eabe8d5da RDX: 00000000200000c0 RSI: 00000000200001c0 RDI: 00007f0eacb2afe0 RBP: 00007f0eacb2b020 R08: 00007f0eacb2b020 R09: 0000000000000808 R10: 0000000000000808 R11: 0000000000000202 R12: 00000000200000c0 R13: 00000000200001c0 R14: 00007f0eacb2afe0 R15: 00000000200002c0 Allocated by task 11587: 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_lru+0x183/0x320 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:3116 [inline] f2fs_alloc_inode+0x14d/0x520 fs/f2fs/super.c:1380 alloc_inode fs/inode.c:259 [inline] iget_locked+0x191/0x830 fs/inode.c:1286 f2fs_iget+0x51/0x4bc0 fs/f2fs/inode.c:508 f2fs_fill_super+0x3d5e/0x6ee0 fs/f2fs/super.c:4259 mount_bdev+0x26c/0x3a0 fs/super.c:1359 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 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 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:488 __call_rcu_common kernel/rcu/tree.c:2755 [inline] call_rcu+0x163/0xa70 kernel/rcu/tree.c:2868 f2fs_put_super+0x651/0xc20 fs/f2fs/super.c:1612 generic_shutdown_super+0x130/0x310 fs/super.c:492 kill_block_super+0x79/0xd0 fs/super.c:1386 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4640 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x494/0x520 fs/namespace.c:1291 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:488 __call_rcu_common kernel/rcu/tree.c:2755 [inline] call_rcu+0x163/0xa70 kernel/rcu/tree.c:2868 f2fs_fill_super+0x596a/0x6ee0 fs/f2fs/super.c:4544 mount_bdev+0x26c/0x3a0 fs/super.c:1359 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 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 ffff888072af5960 which belongs to the cache f2fs_inode_cache of size 2160 The buggy address is located 120 bytes to the right of 2160-byte region [ffff888072af5960, ffff888072af61d0) The buggy address belongs to the physical page: page:ffffea0001cabc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x72af0 head:ffffea0001cabc00 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 memcg:ffff8880211dc301 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff88801c64f8c0 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800e000e 00000001ffffffff ffff8880211dc301 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 6853, tgid 6846 (syz-executor.3), ts 276951616072, free_ts 265635122929 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_lru+0x238/0x320 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:3116 [inline] f2fs_alloc_inode+0x14d/0x520 fs/f2fs/super.c:1380 alloc_inode fs/inode.c:259 [inline] iget_locked+0x191/0x830 fs/inode.c:1286 f2fs_iget+0x51/0x4bc0 fs/f2fs/inode.c:508 f2fs_fill_super+0x55c5/0x6ee0 fs/f2fs/super.c:4361 mount_bdev+0x26c/0x3a0 fs/super.c:1359 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 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 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 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] kmem_cache_alloc_bulk+0x16a/0x1c0 mm/slub.c:4033 mt_alloc_bulk lib/maple_tree.c:157 [inline] mas_alloc_nodes+0x386/0x650 lib/maple_tree.c:1256 mas_node_count_gfp lib/maple_tree.c:1315 [inline] mas_preallocate+0x133/0x340 lib/maple_tree.c:5722 __vma_adjust+0x865/0x21b0 mm/mmap.c:715 __split_vma+0x36e/0x530 mprotect_fixup+0x5d1/0x820 mm/mprotect.c:626 do_mprotect_pkey+0x7ae/0xa90 mm/mprotect.c:785 __do_sys_mprotect mm/mprotect.c:812 [inline] __se_sys_mprotect mm/mprotect.c:809 [inline] __x64_sys_mprotect+0x7c/0x90 mm/mprotect.c:809 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: ffff888072af6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888072af6180: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc >ffff888072af6200: fc fc fc fc fc fc fc fc fc fc 00 00 00 00 00 00 ^ ffff888072af6280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888072af6300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================