bisecting fixing commit since 9dd2326890d89a5179967c947dab2bab34d7ddee
building syzkaller on 8fbce0e4423f701145e111531f6f41cc02e086cf
testing commit 9dd2326890d89a5179967c947dab2bab34d7ddee with gcc (GCC) 8.1.0
all runs: crashed: kernel BUG at fs/reiserfs/journal.c:LINE!
testing current HEAD da05b5ea12c1e50b2988a63470d6b69434796f8b
testing commit da05b5ea12c1e50b2988a63470d6b69434796f8b with gcc (GCC) 8.1.0
all runs: crashed: kernel BUG at fs/reiserfs/journal.c:LINE!
revisions tested: 2, total time: 18m55.527282679s (build: 9m39.321013031s, test: 7m52.254607075s)
the crash still happens on HEAD
crash: kernel BUG at fs/reiserfs/journal.c:LINE!
REISERFS (device loop0): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop5): Using r5 hash to sort names
REISERFS (device loop5): using 3.5.x disk format
------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:3633!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 1 PID: 4640 Comm: syz-executor5 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_journal_end fs/reiserfs/journal.c:3633 [inline]
RIP: 0010:do_journal_end+0x312b/0x4730 fs/reiserfs/journal.c:4029
Code: 4c 8b 5d b0 e9 1b fa ff ff 48 8b 7d d0 4c 89 f6 4c 89 5d 98 e8 26 2f ff ff 4c 8b 5d 98 e9 2c fa ff ff 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 48 8b 45 c8 48 8b 55 a0 48 8d 98 28 03 02 00 48
init_special_inode: bogus i_mode (0) for inode loop4:2
RSP: 0018:ffff8881c6e6f8a8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900016fc000 RCX: 1ffff920002df809
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900016fc058
RBP: ffff8881c6e6f9c0 R08: fffff520002df80c R09: fffff520002df80c
R10: fffff520002df80b R11: ffffc900016fc05b R12: 0000000000000000
R13: ffffc900016fc058 R14: ffff8881c6e6fbc8 R15: ffff8881c693e040
FS:  00007f0484759700(0000) GS:ffff8881db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9b381cc90 CR3: 00000001ca581000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 journal_end+0x203/0x290 fs/reiserfs/journal.c:3403
REISERFS warning (device loop4): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore
 reiserfs_fill_super+0x1b8c/0x2870 fs/reiserfs/super.c:2165
init_special_inode: bogus i_mode (0) for inode loop1:2
 mount_bdev+0x27b/0x340 fs/super.c:1412
 get_super_block+0x10/0x20 fs/reiserfs/super.c:2602
 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:647
 vfs_get_tree+0x8b/0x2d0 fs/super.c:1542
REISERFS warning (device loop1): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore
 do_new_mount fs/namespace.c:2823 [inline]
 do_mount+0xf57/0x1b40 fs/namespace.c:3143
REISERFS (device loop4): Using r5 hash to sort names
 ksys_mount+0xba/0xe0 fs/namespace.c:3352
 __do_sys_mount fs/namespace.c:3366 [inline]
 __se_sys_mount fs/namespace.c:3363 [inline]
 __x64_sys_mount+0xb9/0x150 fs/namespace.c:3363
 do_syscall_64+0xd0/0x5e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4579fa
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8f 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 ba 8f fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f0484758bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00000000004579fa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f0484758c00
RBP: 0000000000000007 R08: 0000000020011500 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
REISERFS (device loop1): Using r5 hash to sort names
R13: 000000000000066d R14: 00000000006fbad8 R15: 0000000000000001
Modules linked in:
---[ end trace 7df390c730c6d44f ]---
REISERFS (device loop4): using 3.5.x disk format
RIP: 0010:check_journal_end fs/reiserfs/journal.c:3633 [inline]
RIP: 0010:do_journal_end+0x312b/0x4730 fs/reiserfs/journal.c:4029
Code: 4c 8b 5d b0 e9 1b fa ff ff 48 8b 7d d0 4c 89 f6 4c 89 5d 98 e8 26 2f ff ff 4c 8b 5d 98 e9 2c fa ff ff 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 48 8b 45 c8 48 8b 55 a0 48 8d 98 28 03 02 00 48
RSP: 0018:ffff8881c6e6f8a8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900016fc000 RCX: 1ffff920002df809
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900016fc058
RBP: ffff8881c6e6f9c0 R08: fffff520002df80c R09: fffff520002df80c
R10: fffff520002df80b R11: ffffc900016fc05b R12: 0000000000000000
R13: ffffc900016fc058 R14: ffff8881c6e6fbc8 R15: ffff8881c693e040
REISERFS (device loop1): using 3.5.x disk format
FS:  00007f0484759700(0000) GS:ffff8881db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9b381cc90 CR3: 00000001ca581000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400