EXT4-fs (loop5): Test dummy encryption mount option ignored EXT4-fs (loop5): Unsupported blocksize for fs encryption ================================================================== BUG: KASAN: slab-out-of-bounds in find_first_zero_bit+0xa8/0xb0 lib/find_bit.c:125 Read of size 8 at addr ffff8880b2b78ec0 by task syz-executor.0/14202 CPU: 0 PID: 14202 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 NILFS (loop3): invalid segment: Checksum error in segment payload 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 NILFS (loop3): trying rollback from an earlier position kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 find_first_zero_bit+0xa8/0xb0 lib/find_bit.c:125 bfs_create+0xfb/0x610 fs/bfs/dir.c:91 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f934b51f0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f9349a91168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f934b63ef80 RCX: 00007f934b51f0f9 RDX: 0000000000000000 RSI: 0000000000143142 RDI: 0000000020000240 RBP: 00007f934b57aae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7fb2161f R14: 00007f9349a91300 R15: 0000000000022000 Allocated by task 14202: __do_kmalloc mm/slab.c:3727 [inline] __kmalloc+0x15a/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] kzalloc include/linux/slab.h:709 [inline] bfs_fill_super+0x447/0xec0 fs/bfs/inode.c:363 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 8244: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 kvfree+0x59/0x60 mm/util.c:452 NILFS (loop3): recovery complete __vunmap+0x2a5/0x3f0 mm/vmalloc.c:1534 vfree+0x65/0x100 mm/vmalloc.c:1598 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:886 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline] do_ip6t_get_ctl+0x719/0x910 net/ipv6/netfilter/ip6_tables.c:1714 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1b6/0x260 net/ipv6/ipv6_sockglue.c:1388 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3629 NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds __sys_getsockopt+0x135/0x210 net/socket.c:2050 __do_sys_getsockopt net/socket.c:2061 [inline] __se_sys_getsockopt net/socket.c:2058 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:2058 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe audit: type=1804 audit(1677904637.674:20): pid=14199 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2994219851/syzkaller.exT0kn/212/file0/bus" dev="loop3" ino=12 res=1 audit: type=1804 audit(1677904637.674:21): pid=14199 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir2994219851/syzkaller.exT0kn/212/file0/bus" dev="loop3" ino=12 res=1 The buggy address belongs to the object at ffff8880b2b78ec0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880b2b78ec0, ffff8880b2b78ee0) The buggy address belongs to the page: page:ffffea0002cade00 count:1 mapcount:0 mapping:ffff88813bff01c0 index:0xffff8880b2b78fc1 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea0002a51608 ffffea0002d2d648 ffff88813bff01c0 WARNING: CPU: 1 PID: 14199 at include/linux/backing-dev.h:340 inode_to_wb include/linux/backing-dev.h:340 [inline] WARNING: CPU: 1 PID: 14199 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 mm/page-writeback.c:2420 raw: ffff8880b2b78fc1 ffff8880b2b78000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880b2b78d80: 05 fc fc fc fc fc fc fc 00 01 fc fc fc fc fc fc ffff8880b2b78e00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc