Messages in this thread | | | Date | Tue, 24 Apr 2018 07:42:01 -0700 | Subject | Re: kernel BUG at fs/f2fs/node.c:LINE! | From | syzbot <> |
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Hello,
syzbot has tested the proposed patch but the reproducer still triggered crash: kernel BUG at fs/f2fs/inode.c:LINE!
F2FS-fs (loop5): invalid crc value F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop5): check_nid_range: out-of-range nid=1, run fsck to fix. ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:588! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 4848 Comm: syz-executor5 Not tainted 4.17.0-rc1+ #1 F2FS-fs (loop0): invalid crc value Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:f2fs_evict_inode+0x1344/0x1710 fs/f2fs/inode.c:587 RSP: 0018:ffff8801bf96ef10 EFLAGS: 00010293 RAX: ffff8801abfa8040 RBX: ffff8801a8957080 RCX: ffffffff82eb2fc6 RDX: 0000000000000000 RSI: ffffffff82eb2fd4 RDI: 0000000000000001 RBP: ffff8801bf96f0f8 R08: ffff8801abfa8040 R09: ffffed003a0331b5 F2FS-fs (loop6): Magic Mismatch, valid(0xf2f52010) - read(0x0) R10: ffffed003a0331b5 R11: ffff8801d0198dab R12: 0000000000000000 R13: 00000000ffffffea R14: 0000000000000000 R15: 0000000000000001 FS: 00007febdf624700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 F2FS-fs (loop6): Can't find valid F2FS filesystem in 1th superblock CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002431228 CR3: 00000001d7686000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 F2FS-fs (loop0): check_nid_range: out-of-range nid=1, run fsck to fix. Call Trace: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:588! evict+0x4a6/0x960 fs/inode.c:557 iput_final fs/inode.c:1519 [inline] iput+0x62d/0xa80 fs/inode.c:1545 f2fs_fill_super+0x5f4e/0x7bf0 fs/f2fs/super.c:2849 mount_bdev+0x30c/0x3e0 fs/super.c:1165 f2fs_mount+0x34/0x40 fs/f2fs/super.c:3020 mount_fs+0xae/0x328 fs/super.c:1268 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 ksys_mount+0x12d/0x140 fs/namespace.c:3063 __do_sys_mount fs/namespace.c:3077 [inline] __se_sys_mount fs/namespace.c:3074 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3074 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457dba RSP: 002b:00007febdf623ba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000457dba RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007febdf623bf0 RBP: 000000000000006a R08: 0000000020016a00 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 000000000000006a R14: 00000000006fcb80 R15: 0000000000000000 Code: 5e 03 00 00 8b 73 40 4c 89 e7 31 d2 e8 c6 e1 05 00 31 ff 41 89 c4 89 c6 e8 2a 01 8e fe 45 84 e4 0f 85 b1 f3 ff ff e8 4c 00 8e fe <0f> 0b e8 85 5a ca fe e9 c7 ee ff ff e8 7b 5a ca fe e9 10 ef ff RIP: f2fs_evict_inode+0x1344/0x1710 fs/f2fs/inode.c:587 RSP: ffff8801bf96ef10 invalid opcode: 0000 [#2] SMP KASAN ---[ end trace a8c4607d38f9047d ]--- Dumping ftrace buffer: (ftrace buffer empty) Modules linked in:
Tested on git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/dev-test commit 65b966f58e8264477da6c8b70703ce362cb1f8f0 (Tue Apr 24 05:02:31 2018 +0000) f2fs: give message and set need_fsck given broken node id
compiler: gcc (GCC) 8.0.1 20180413 (experimental) Kernel config: https://syzkaller.appspot.com/x/.config?id=1808800213120130118 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5916974974500864
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