NILFS (loop4): invalid segment: Checksum error in segment payload NILFS (loop4): trying rollback from an earlier position ================================================================== BUG: KASAN: use-after-free in nilfs_iget_test+0xa1/0x330 fs/nilfs2/inode.c:544 Read of size 8 at addr ffff8880394a7ff8 by task syz-executor.4/12272 CPU: 1 PID: 12272 Comm: syz-executor.4 Not tainted 6.1.0-rc8-syzkaller-00014-g8ed710da2873 #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:490 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: 0033:0x7fc40188d60a 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:00007fc402608f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000da6 RCX: 00007fc40188d60a RDX: 0000000020000dc0 RSI: 0000000020000100 RDI: 00007fc402608fe0 RBP: 00007fc402609020 R08: 00007fc402609020 R09: 0000000000010018 R10: 0000000000010018 R11: 0000000000000202 R12: 0000000020000dc0 R13: 0000000020000100 R14: 00007fc402608fe0 R15: 0000000020000e40 The buggy address belongs to the physical page: page:ffffea0000e529c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2 pfn:0x394a7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000100 dead000000000122 0000000000000000 raw: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 10, migratetype Unmovable, gfp_mask 0x146dc0(GFP_USER|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP|__GFP_ZERO), pid 9581, tgid 9580 (syz-executor.2), ts 366783515713, free_ts 366820844373 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_pages_node include/linux/gfp.h:237 [inline] alloc_pages_node include/linux/gfp.h:260 [inline] __kmalloc_large_node+0x95/0x1e0 mm/slab_common.c:1096 __do_kmalloc_node mm/slab_common.c:943 [inline] __kmalloc_node+0xf5/0x190 mm/slab_common.c:962 kmalloc_node include/linux/slab.h:579 [inline] kvmalloc_node+0x6e/0x180 mm/util.c:581 xlog_write_log_records+0xf0/0x410 fs/xfs/xfs_log_recover.c:1534 xlog_clear_stale_blocks+0x262/0x430 fs/xfs/xfs_log_recover.c:1681 xlog_find_tail+0xa83/0xeb0 fs/xfs/xfs_log_recover.c:1365 xlog_recover+0x98/0x550 fs/xfs/xfs_log_recover.c:3361 xfs_log_mount+0x40c/0x770 fs/xfs/xfs_log.c:739 xfs_mountfs+0xccf/0x1ef0 fs/xfs/xfs_mount.c:805 xfs_fs_fill_super+0xf95/0x11f0 fs/xfs/xfs_super.c:1666 get_tree_bdev+0x400/0x620 fs/super.c:1324 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 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_pages_ok+0xbc7/0xcc0 mm/page_alloc.c:1715 free_large_kmalloc+0xfb/0x190 mm/slab_common.c:932 kmem_free fs/xfs/kmem.h:62 [inline] xlog_write_log_records+0x39e/0x410 fs/xfs/xfs_log_recover.c:1586 xlog_clear_stale_blocks+0x262/0x430 fs/xfs/xfs_log_recover.c:1681 xlog_find_tail+0xa83/0xeb0 fs/xfs/xfs_log_recover.c:1365 xlog_recover+0x98/0x550 fs/xfs/xfs_log_recover.c:3361 xfs_log_mount+0x40c/0x770 fs/xfs/xfs_log.c:739 xfs_mountfs+0xccf/0x1ef0 fs/xfs/xfs_mount.c:805 xfs_fs_fill_super+0xf95/0x11f0 fs/xfs/xfs_super.c:1666 get_tree_bdev+0x400/0x620 fs/super.c:1324 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 Memory state around the buggy address: ffff8880394a7e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880394a7f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff8880394a7f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880394a8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880394a8080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================