bisecting fixing commit since a1b977b49b66c75e6c51a515f6700371ae720217
building syzkaller on d32b0bbf2f8cfe548553c4012e2c0f79040d999f
testing commit a1b977b49b66c75e6c51a515f6700371ae720217 with gcc (GCC) 8.4.1 20210217
kernel signature: c9df830a4369e086f44948649a131d59d5134bcdc28128d5c3426fdb0c66f62b
run #0: crashed: kernel BUG in f2fs_evict_inode
run #1: crashed: kernel BUG in f2fs_evict_inode
run #2: crashed: kernel BUG in f2fs_evict_inode
run #3: crashed: kernel BUG in corrupted
run #4: crashed: kernel BUG in f2fs_evict_inode
run #5: crashed: kernel BUG in f2fs_evict_inode
run #6: crashed: kernel BUG in f2fs_evict_inode
run #7: crashed: kernel BUG in f2fs_evict_inode
run #8: crashed: kernel BUG in f2fs_evict_inode
run #9: crashed: kernel BUG in f2fs_evict_inode
run #10: crashed: kernel BUG in f2fs_evict_inode
run #11: crashed: kernel BUG in f2fs_evict_inode
run #12: crashed: kernel BUG in f2fs_evict_inode
run #13: crashed: kernel BUG in f2fs_evict_inode
run #14: crashed: kernel BUG in f2fs_evict_inode
run #15: crashed: kernel BUG in f2fs_evict_inode
run #16: crashed: kernel BUG in f2fs_evict_inode
run #17: crashed: kernel BUG in f2fs_evict_inode
run #18: crashed: kernel BUG in f2fs_evict_inode
run #19: crashed: kernel BUG in f2fs_evict_inode
testing current HEAD 255b58a2b3af0baa0ee11507390349217b8b73b0
testing commit 255b58a2b3af0baa0ee11507390349217b8b73b0 with gcc (GCC) 8.4.1 20210217
kernel signature: b66772ad56527fd083c4a4510644bb28cc35e4707f6916b44f984e40ba08a8f5
all runs: crashed: kernel BUG in f2fs_evict_inode
revisions tested: 2, total time: 23m25.752814015s (build: 15m44.334170243s, test: 6m47.591777912s)
the crash still happens on HEAD
commit msg: Linux 4.19.176
crash: kernel BUG in f2fs_evict_inode
F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock
F2FS-fs (loop3): invalid crc value
F2FS-fs (loop3): f2fs_check_nid_range: out-of-range nid=1, run fsck to fix.
F2FS-fs (loop3): 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: 7418 Comm: syz-executor.3 Not tainted 4.19.176-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 96 7f a9 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 0f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 93 7f a9 fe e9 1c f8 ff ff 4c 89 f7 e8 86 7f a9 fe e9 2f
RSP: 0018:ffff8881d408f910 EFLAGS: 00010202
RAX: 0000000000000142 RBX: ffff8881f4968800 RCX: 0000000000000001
RDX: 1ffff1103987c292 RSI: 0000000000000001 RDI: ffff8881dc0e6704
RBP: ffff8881d408f988 R08: 0000000000000000 R09: ffffed103ecc473a
R10: ffffed103ecc473a R11: ffff8881f66239d3 R12: ffff8881cc3e10c0
R13: ffff8881dc0e6680 R14: dffffc0000000000 R15: ffff8881f4968db8
FS:  00007f0596a9e700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75ea5c6008 CR3: 00000001dace4002 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 fs/inode.c:1581 [inline]
 iput+0x378/0x6b0 fs/inode.c:1567
 f2fs_fill_super fs/f2fs/super.c:3064 [inline]
 f2fs_fill_super+0x4b80/0x70f0 fs/f2fs/super.c:2803
 mount_bdev+0x26f/0x330 fs/super.c:1158
 f2fs_mount+0x10/0x20 fs/f2fs/super.c:3234
 mount_fs+0x7f/0x2b0 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+0xb1/0xd0 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: 0033:0x466d6a
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:00007f0596a9dfa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466d6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0596a9e000
RBP: 00007f0596a9e040 R08: 00007f0596a9e040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f0596a9e000 R15: 00000000200015c0
Modules linked in:
---[ end trace 4fbbb8331d4e3c77 ]---
RIP: 0010:f2fs_evict_inode+0xd06/0x1000 fs/f2fs/inode.c:706
Code: e9 df f8 ff ff 48 8b 7d a0 e8 96 7f a9 fe e9 a3 f3 ff ff 85 c0 0f 84 8b fc ff ff eb 9a 4c 89 e7 e8 0f 41 03 00 e9 94 f6 ff ff <0f> 0b e8 93 7f a9 fe e9 1c f8 ff ff 4c 89 f7 e8 86 7f a9 fe e9 2f
RSP: 0018:ffff8881d408f910 EFLAGS: 00010202
RAX: 0000000000000142 RBX: ffff8881f4968800 RCX: 0000000000000001
RDX: 1ffff1103987c292 RSI: 0000000000000001 RDI: ffff8881dc0e6704
RBP: ffff8881d408f988 R08: 0000000000000000 R09: ffffed103ecc473a
R10: ffffed103ecc473a R11: ffff8881f66239d3 R12: ffff8881cc3e10c0
R13: ffff8881dc0e6680 R14: dffffc0000000000 R15: ffff8881f4968db8
FS:  00007f0596a9e700(0000) GS:ffff8881f6600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75ea53a000 CR3: 00000001dace4003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400