bisecting fixing commit since 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539
building syzkaller on cc402841ba1e067327a4adaf0a65335e47b5e83c
testing commit 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539 with gcc (GCC) 8.1.0
kernel signature: 7e81e7199df52f2fba41a451bf69e29a8deb656fc8dc5ab1fceb0d93f7fa874d
all runs: crashed: kernel BUG at fs/reiserfs/journal.c:LINE!
testing current HEAD b74b991fb8b9d642b8fea20d6245c6e19125a305
testing commit b74b991fb8b9d642b8fea20d6245c6e19125a305 with gcc (GCC) 8.1.0
kernel signature: e77f1ea87ebb86999fd4a3c888778cc99969c11ad55893620659495e8f636a57
all runs: crashed: kernel BUG at fs/reiserfs/journal.c:LINE!
revisions tested: 2, total time: 19m25.224409335s (build: 11m10.136676947s, test: 7m35.362322783s)
the crash still happens on HEAD
commit msg: Merge tag 'block-5.6-20200320' of git://git.kernel.dk/linux-block
crash: kernel BUG at fs/reiserfs/journal.c:LINE!
REISERFS (device loop1): using 3.5.x disk format
REISERFS warning (device loop5): sh-462 journal_init: unable to initialize journal device
REISERFS (device loop4): checking transaction log (loop4)
------------[ cut here ]------------
REISERFS warning (device loop5): sh-2022 reiserfs_fill_super: unable to initialize journal space
kernel BUG at fs/reiserfs/journal.c:3631!
invalid opcode: 0000 [#1] SMP KASAN
init_special_inode: bogus i_mode (0) for inode loop4:2
CPU: 1 PID: 5593 Comm: syz-executor1 Not tainted 5.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_journal_end fs/reiserfs/journal.c:3631 [inline]
RIP: 0010:do_journal_end+0x312b/0x4730 fs/reiserfs/journal.c:4027
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:ffff8881b48178d8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900041c1000 RCX: 1ffff92000838209
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900041c1058
RBP: ffff8881b48179f0 R08: fffff5200083820c R09: fffff5200083820c
R10: fffff5200083820b R11: ffffc900041c105b R12: 0000000000000000
R13: ffffc900041c1058 R14: ffff8881b4817c00 R15: ffff8881c008c000
FS:  00007f1c32b08700(0000) GS:ffff8881db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
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
CR2: 00007fc5688cba20 CR3: 00000001c1296000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 journal_end+0x203/0x290 fs/reiserfs/journal.c:3401
 reiserfs_fill_super+0x1b1b/0x27f0 fs/reiserfs/super.c:2168
REISERFS (device loop4): Using r5 hash to sort names
 mount_bdev+0x27b/0x340 fs/super.c:1417
REISERFS (device loop4): using 3.5.x disk format
 get_super_block+0x10/0x20 fs/reiserfs/super.c:2606
 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:622
 vfs_get_tree+0x8b/0x2d0 fs/super.c:1547
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x1285/0x1b70 fs/namespace.c:3107
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
 __do_sys_mount fs/namespace.c:3316 [inline]
 __se_sys_mount fs/namespace.c:3293 [inline]
 __x64_sys_mount+0x169/0x1c0 fs/namespace.c:3293
 do_syscall_64+0xd0/0x630 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457efa
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:00007f1c32b07ba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000457efa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f1c32b07bf0
REISERFS (device loop0): checking transaction log (loop0)
RBP: 0000000000000014 R08: 0000000020013900 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000014 R14: 00000000006fcc58 R15: 0000000000000000
Modules linked in:
---[ end trace d648c3667e5fea92 ]---
init_special_inode: bogus i_mode (0) for inode loop0:2
RIP: 0010:check_journal_end fs/reiserfs/journal.c:3631 [inline]
RIP: 0010:do_journal_end+0x312b/0x4730 fs/reiserfs/journal.c:4027
REISERFS warning (device loop0): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore
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:ffff8881b48178d8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc900041c1000 RCX: 1ffff92000838209
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900041c1058
RBP: ffff8881b48179f0 R08: fffff5200083820c R09: fffff5200083820c
R10: fffff5200083820b R11: ffffc900041c105b R12: 0000000000000000
R13: ffffc900041c1058 R14: ffff8881b4817c00 R15: ffff8881c008c000
FS:  00007f1c32b08700(0000) GS:ffff8881db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5688cba20 CR3: 00000001c1296000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400