bisecting fixing commit since a1b977b49b66c75e6c51a515f6700371ae720217
building syzkaller on d32b0bbf2f8cfe548553c4012e2c0f79040d999f
testing commit a1b977b49b66c75e6c51a515f6700371ae720217 with gcc (GCC) 8.1.0
kernel signature: a7a310542d9302d4c3287674a42ac52f3bbc54af3bd18c294e3cd14ecebd4524
all runs: crashed: kernel BUG at fs/f2fs/inode.c:LINE!
testing current HEAD 610bdbf6a174c9a91e34e276a9594114b44bef74
testing commit 610bdbf6a174c9a91e34e276a9594114b44bef74 with gcc (GCC) 8.1.0
kernel signature: fce50f1b33b85a40aa44b9d654421067557932108205161e54bc1fbbc1b44a79
all runs: crashed: kernel BUG at fs/f2fs/inode.c:LINE!
revisions tested: 2, total time: 24m36.56680401s (build: 18m32.412428749s, test: 5m29.384601528s)
the crash still happens on HEAD
commit msg: Linux 4.19.166
crash: kernel BUG at fs/f2fs/inode.c:LINE!
F2FS-fs (loop2): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop2): invalid crc value
F2FS-fs (loop2): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix.
F2FS-fs (loop2): f2fs_check_nid_range: out-of-range nid=2, run fsck to fix.
------------[ cut here ]------------
kernel BUG at fs/f2fs/inode.c:706!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7471 Comm: syz-executor.2 Not tainted 4.19.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706
Code: e9 df f8 ff ff 48 8b 7d a0 e8 46 7f a3 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 1f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 43 7f a3 fe e9 1c f8 ff ff 4c 89 f7 e8 36 7f a3 fe e9 2f
RSP: 0018:ffff8881dbc5f910 EFLAGS: 00010202
RAX: 0000000000000142 RBX: ffff8881dc1b4480 RCX: 0000000000000001
RDX: 1ffff11038f7b692 RSI: 0000000000000001 RDI: ffff8881cd654f04
RBP: ffff8881dbc5f988 R08: 0000000000000000 R09: ffffed103ecc473a
R10: ffffed103ecc473a R11: ffff8881f66239d3 R12: ffff8881c7bdb0c0
R13: ffff8881cd654e80 R14: dffffc0000000000 R15: ffff8881dc1b4a38
FS:  00007f018bc3b700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000074a1a8 CR3: 00000001d8c59005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 evict+0x29c/0x590 fs/inode.c:559
 iput_final fs/inode.c:1555 [inline]
 iput+0x378/0x6b0 fs/inode.c:1581
 f2fs_fill_super+0x4b52/0x70c0 fs/f2fs/super.c:3064
 mount_bdev+0x26f/0x330 fs/super.c:1158
 f2fs_mount+0x10/0x20 fs/f2fs/super.c:3234
 mount_fs+0x7f/0x2a2 fs/super.c:1261
 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x376/0x2710 fs/namespace.c:2799
 ksys_mount+0xba/0xe0 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3026
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4608aa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f018bc3aa88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f018bc3ab20 RCX: 00000000004608aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f018bc3aae0
RBP: 00007f018bc3aae0 R08: 00007f018bc3ab20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 00000000200015c0
Modules linked in:
---[ end trace 6d3c0a8df33637ef ]---
RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706
Code: e9 df f8 ff ff 48 8b 7d a0 e8 46 7f a3 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 1f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 43 7f a3 fe e9 1c f8 ff ff 4c 89 f7 e8 36 7f a3 fe e9 2f
RSP: 0018:ffff8881dbc5f910 EFLAGS: 00010202
RAX: 0000000000000142 RBX: ffff8881dc1b4480 RCX: 0000000000000001
RDX: 1ffff11038f7b692 RSI: 0000000000000001 RDI: ffff8881cd654f04
RBP: ffff8881dbc5f988 R08: 0000000000000000 R09: ffffed103ecc473a
F2FS-fs (loop4): Magic Mismatch, valid(0xf2f52010) - read(0x0)
R10: ffffed103ecc473a R11: ffff8881f66239d3 R12: ffff8881c7bdb0c0
R13: ffff8881cd654e80 R14: dffffc0000000000 R15: ffff8881dc1b4a38
FS:  00007f018bc3b700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000074a1a8 CR3: 00000001d8c59005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400