================================================================== BUG: KFENCE: use-after-free write in kmem_cache_destroy+0x1f/0x120 mm/slab_common.c:486 Use-after-free write at 0xffff88823bc16040 (in kfence-#10): kmem_cache_destroy+0x1f/0x120 mm/slab_common.c:486 f2fs_recover_fsync_data+0x75b0/0x8380 fs/f2fs/recovery.c:869 f2fs_fill_super+0x9393/0xa420 fs/f2fs/super.c:3945 mount_bdev+0x26c/0x3a0 fs/super.c:1367 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1497 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x196f/0x2be0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3433 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae kfence-#10 [0xffff88823bc16000-0xffff88823bc160df, size=224, cache=kmem_cache] allocated by task 15453: kmem_cache_zalloc include/linux/slab.h:676 [inline] create_cache mm/slab_common.c:247 [inline] kmem_cache_create_usercopy+0x12a/0x2f0 mm/slab_common.c:350 kmem_cache_create+0xf/0x20 mm/slab_common.c:405 f2fs_kmem_cache_create fs/f2fs/f2fs.h:2463 [inline] f2fs_recover_fsync_data+0x1f0/0x8380 fs/f2fs/recovery.c:790 f2fs_fill_super+0x9393/0xa420 fs/f2fs/super.c:3945 mount_bdev+0x26c/0x3a0 fs/super.c:1367 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1497 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x196f/0x2be0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3433 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae freed by task 15448: kobject_cleanup+0x1c9/0x280 lib/kobject.c:705 shutdown_cache mm/slab_common.c:463 [inline] kmem_cache_destroy+0x93/0x120 mm/slab_common.c:492 f2fs_recover_fsync_data+0x75b0/0x8380 fs/f2fs/recovery.c:869 f2fs_fill_super+0x9393/0xa420 fs/f2fs/super.c:3945 mount_bdev+0x26c/0x3a0 fs/super.c:1367 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1497 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x196f/0x2be0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3433 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae CPU: 0 PID: 15453 Comm: syz-executor.0 Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmem_cache_destroy+0x1f/0x120 mm/slab_common.c:488 Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 48 85 ff 0f 84 09 01 00 00 41 57 41 56 53 48 89 fb 48 c7 c7 b8 07 dc 8c 31 f6 e8 b1 c3 00 08 4b 40 0f 85 c0 00 00 00 48 89 df e8 20 a2 14 00 48 89 df e8 18 RSP: 0018:ffffc900030af320 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88823bc16000 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001 RBP: ffffc900030af870 R08: dffffc0000000000 R09: fffffbfff19b80f8 R10: fffffbfff19b80f8 R11: 0000000000000000 R12: ffff88808c3a4000 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000615eb0 FS: 00007f60a5228700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823bc16040 CR3: 000000001ccd8000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: f2fs_recover_fsync_data+0x75b0/0x8380 fs/f2fs/recovery.c:869 f2fs_fill_super+0x9393/0xa420 fs/f2fs/super.c:3945 mount_bdev+0x26c/0x3a0 fs/super.c:1367 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1497 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x196f/0x2be0 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3433 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x467b1a Code: 48 c7 c2 bc 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f60a5227fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467b1a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f60a5228000 RBP: 00007f60a5228040 R08: 00007f60a5228040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f60a5228000 R15: 0000000020014b00 ==================================================================