audit: type=1804 audit(1678045533.699:190): pid=12701 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir4018372038/syzkaller.uMZNKd/43/file0/bus" dev="loop2" ino=10 res=1 F2FS-fs (loop5): invalid crc value attempt to access beyond end of device loop2: rw=2049, want=45104, limit=40427 ================================================================== BUG: KASAN: use-after-free in f2fs_evict_inode+0x100b/0x1330 fs/f2fs/inode.c:650 Read of size 4 at addr ffff88803f95e950 by task syz-executor.5/12677 CPU: 1 PID: 12677 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load4_noabort+0x88/0x90 mm/kasan/report.c:432 f2fs_evict_inode+0x100b/0x1330 fs/f2fs/inode.c:650 evict+0x2ed/0x760 fs/inode.c:559 iput_final fs/inode.c:1555 [inline] iput+0x4f1/0x860 fs/inode.c:1581 dentry_unlink_inode+0x265/0x320 fs/dcache.c:374 __dentry_kill+0x3c0/0x640 fs/dcache.c:566 dentry_kill+0xc4/0x510 fs/dcache.c:685 shrink_dentry_list+0x2ab/0x6e0 fs/dcache.c:1092 shrink_dcache_sb+0x144/0x220 fs/dcache.c:1212 f2fs_fill_super+0x1461/0x7050 fs/f2fs/super.c:3225 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f67f74f262a 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:00007f67f5a62f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000054f4 RCX: 00007f67f74f262a RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007f67f5a62fe0 RBP: 00007f67f5a63020 R08: 00007f67f5a63020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020000080 R14: 00007f67f5a62fe0 R15: 0000000020000540 Allocated by task 12677: kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] f2fs_fill_super+0xfd/0x7050 fs/f2fs/super.c:2821 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 12677: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 f2fs_fill_super+0x1439/0x7050 fs/f2fs/super.c:3220 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88803f95dc00 which belongs to the cache kmalloc-8192 of size 8192 The buggy address is located 3408 bytes inside of 8192-byte region [ffff88803f95dc00, ffff88803f95fc00) The buggy address belongs to the page: page:ffffea0000fe5700 count:1 mapcount:0 mapping:ffff88813bff2080 index:0x0 compound_mapcount: 0 flags: 0xfff00000008100(slab|head) raw: 00fff00000008100 ffffea000104be08 ffffea0000e37c08 ffff88813bff2080 raw: 0000000000000000 ffff88803f95dc00 0000000100000001 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88803f95e800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803f95e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88803f95e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88803f95e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803f95ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== audit: type=1804 audit(1678045534.479:191): pid=12739 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir516600870/syzkaller.JZsxaq/54/bus" dev="sda1" ino=14199 res=1