NILFS (loop2): invalid segment: Checksum error in segment payload NILFS (loop2): trying rollback from an earlier position ================================================================== BUG: KASAN: slab-out-of-bounds in nilfs_iget_test+0xa5/0x320 fs/nilfs2/inode.c:544 Read of size 8 at addr ffff888030b9ead8 by task syz-executor.2/23488 CPU: 1 PID: 23488 Comm: syz-executor.2 Not tainted 6.3.0-rc4-syzkaller-00039-gffe78bbd5121 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:319 [inline] print_report+0x163/0x540 mm/kasan/report.c:430 kasan_report+0x176/0x1b0 mm/kasan/report.c:536 nilfs_iget_test+0xa5/0x320 fs/nilfs2/inode.c:544 find_inode+0x16f/0x430 fs/inode.c:916 ilookup5_nowait fs/inode.c:1429 [inline] ilookup5+0xa1/0x200 fs/inode.c:1458 iget5_locked+0x37/0x270 fs/inode.c:1239 nilfs_iget_locked+0x12b/0x180 fs/nilfs2/inode.c:605 nilfs_dat_read+0xbf/0x300 fs/nilfs2/dat.c:508 nilfs_load_super_root fs/nilfs2/the_nilfs.c:121 [inline] load_nilfs+0x518/0xfd0 fs/nilfs2/the_nilfs.c:302 nilfs_fill_super+0x2ce/0x660 fs/nilfs2/super.c:1068 nilfs_mount+0x67d/0x9a0 fs/nilfs2/super.c:1324 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3042 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2b2d88d62a 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:00007f2b2e6c7f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000da6 RCX: 00007f2b2d88d62a RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007f2b2e6c7fe0 RBP: 00007f2b2e6c8020 R08: 00007f2b2e6c8020 R09: 0000000000004800 R10: 0000000000004800 R11: 0000000000000202 R12: 00000000200000c0 R13: 0000000020000100 R14: 00007f2b2e6c7fe0 R15: 0000000020000040 Allocated by task 31089: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769 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+0x11f/0x2e0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2686 [inline] f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371 alloc_inode fs/inode.c:260 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1019 new_inode+0x29/0x1d0 fs/inode.c:1047 f2fs_new_inode+0x120/0x1090 fs/f2fs/namei.c:217 f2fs_mkdir+0x127/0x530 fs/f2fs/namei.c:756 vfs_mkdir+0x29d/0x450 fs/namei.c:4038 do_mkdirat+0x264/0x520 fs/namei.c:4061 __do_sys_mkdir fs/namei.c:4081 [inline] __se_sys_mkdir fs/namei.c:4079 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4079 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2622 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736 dispose_list fs/inode.c:698 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:748 generic_shutdown_super+0x98/0x340 fs/super.c:479 kill_block_super+0x7e/0xe0 fs/super.c:1407 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2622 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736 f2fs_put_super+0x5e0/0xc80 fs/f2fs/super.c:1597 generic_shutdown_super+0x134/0x340 fs/super.c:500 kill_block_super+0x7e/0xe0 fs/super.c:1407 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888030b9e1f8 which belongs to the cache f2fs_inode_cache of size 2152 The buggy address is located 120 bytes to the right of allocated 2152-byte region [ffff888030b9e1f8, ffff888030b9ea60) The buggy address belongs to the physical page: page:ffffea0000c2e600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888030b9d028 pfn:0x30b98 head:ffffea0000c2e600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88802beb0501 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff88801c18adc0 ffffea0000c23400 0000000000000002 raw: ffff888030b9d028 00000000800e0001 00000001ffffffff ffff88802beb0501 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 6046, tgid 6045 (syz-executor.0), ts 192471002969, free_ts 0 prep_new_page mm/page_alloc.c:2553 [inline] get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 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+0x1b9/0x2e0 mm/slub.c:3483 alloc_inode_sb include/linux/fs.h:2686 [inline] f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371 alloc_inode fs/inode.c:260 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1019 new_inode+0x29/0x1d0 fs/inode.c:1047 f2fs_new_inode+0x120/0x1090 fs/f2fs/namei.c:217 f2fs_create+0x197/0x530 fs/f2fs/namei.c:353 lookup_open fs/namei.c:3416 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0x13df/0x3170 fs/namei.c:3712 do_filp_open+0x234/0x490 fs/namei.c:3742 do_sys_openat2+0x13f/0x500 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_open fs/open.c:1372 [inline] __se_sys_open fs/open.c:1368 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1368 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 page_owner free stack trace missing Memory state around the buggy address: ffff888030b9e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888030b9ea00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff888030b9ea80: fc fc fc fc fc fc fc fc fc fc fc fc 00 00 00 00 ^ ffff888030b9eb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888030b9eb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================