bisecting fixing commit since daefdc9eb24bfa11ab77a4b2a9c3923f1051fe0b building syzkaller on 51a9082e064119316893e12187cab2843283ed4d testing commit daefdc9eb24bfa11ab77a4b2a9c3923f1051fe0b with gcc (GCC) 8.4.1 20210217 kernel signature: 09725c7c8e1ffc6e5ac5b9aa40c6118eab419800a29fb1c7f1a2fc1e4ee4e9f4 run #0: crashed: kernel BUG in do_journal_end run #1: crashed: kernel BUG in do_journal_end run #2: crashed: kernel BUG in do_journal_end run #3: crashed: kernel BUG in do_journal_end run #4: crashed: kernel BUG in do_journal_end run #5: crashed: kernel BUG in do_journal_end run #6: crashed: kernel BUG in do_journal_end run #7: crashed: kernel BUG in do_journal_end run #8: crashed: kernel BUG in do_journal_end run #9: crashed: kernel BUG in do_journal_end run #10: crashed: kernel BUG in do_journal_end run #11: crashed: kernel BUG in do_journal_end run #12: crashed: kernel BUG in do_journal_end run #13: crashed: kernel BUG in do_journal_end run #14: crashed: kernel BUG in do_journal_end run #15: crashed: kernel BUG in corrupted run #16: crashed: kernel BUG in do_journal_end run #17: crashed: kernel BUG in do_journal_end run #18: crashed: kernel BUG in do_journal_end run #19: crashed: kernel BUG in do_journal_end testing current HEAD 255b58a2b3af0baa0ee11507390349217b8b73b0 testing commit 255b58a2b3af0baa0ee11507390349217b8b73b0 with gcc (GCC) 8.4.1 20210217 kernel signature: e490de5aaf644c6c5a9d6178eca683a2b21f641af5e6fe9d209480669518e341 run #0: crashed: kernel BUG in corrupted run #1: crashed: kernel BUG in do_journal_end run #2: crashed: kernel BUG in do_journal_end run #3: crashed: kernel BUG in do_journal_end run #4: crashed: kernel BUG in do_journal_end run #5: crashed: kernel BUG in do_journal_end run #6: crashed: kernel BUG in do_journal_end run #7: crashed: kernel BUG in do_journal_end run #8: crashed: kernel BUG in do_journal_end run #9: crashed: kernel BUG in do_journal_end revisions tested: 2, total time: 22m47.736322989s (build: 14m38.545160065s, test: 7m15.839912573s) the crash still happens on HEAD commit msg: Linux 4.19.176 crash: kernel BUG in do_journal_end REISERFS warning (device loop2): 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 warning (device loop0): sh-2022 reiserfs_fill_super: unable to initialize journal space REISERFS (device loop2): Using rupasov hash to sort names ------------[ cut here ]------------ kernel BUG at fs/reiserfs/journal.c:3643! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11579 Comm: syz-executor.2 Not tainted 4.19.176-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:3643 [inline] RIP: 0010:do_journal_end+0x3094/0x4400 fs/reiserfs/journal.c:4040 Code: 5d c8 4c 89 f6 48 89 df e8 69 f9 fe ff ba 01 00 00 00 4c 89 f6 48 89 df e8 79 16 ff ff e9 98 fa ff ff 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 48 8b 45 d0 48 8b 55 a8 48 8d 98 28 03 02 00 48 RSP: 0018:ffff8880a2cc7890 EFLAGS: 00010246 RAX: ffffc90006326048 RBX: ffffc90006326000 RCX: 1ffff92000c64c09 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90006326058 RBP: ffff8880a2cc7998 R08: fffff52000c64c0c R09: fffff52000c64c0b R10: fffff52000c64c0b R11: ffffc9000632605b R12: 0000000000000000 R13: ffffc90006326058 R14: ffff8880a2cc7b88 R15: ffff88809d572980 FS: 00007fd0ddd63700(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf7085d080 CR3: 00000000a97d0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: journal_end+0x231/0x2c0 fs/reiserfs/journal.c:3412 reiserfs_fill_super+0x199b/0x26b0 fs/reiserfs/super.c:2171 mount_bdev+0x26f/0x330 fs/super.c:1158 get_super_block+0x10/0x20 fs/reiserfs/super.c:2609 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: 0033:0x466eda 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:00007fd0ddd62fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000466eda RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd0ddd63000 RBP: 00007fd0ddd63040 R08: 00007fd0ddd63040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fd0ddd63000 R15: 0000000020011500 Modules linked in: ---[ end trace 0f31c277a1ca3342 ]--- RIP: 0010:check_journal_end fs/reiserfs/journal.c:3643 [inline] RIP: 0010:do_journal_end+0x3094/0x4400 fs/reiserfs/journal.c:4040 Code: 5d c8 4c 89 f6 48 89 df e8 69 f9 fe ff ba 01 00 00 00 4c 89 f6 48 89 df e8 79 16 ff ff e9 98 fa ff ff 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 48 8b 45 d0 48 8b 55 a8 48 8d 98 28 03 02 00 48 RSP: 0018:ffff8880a2cc7890 EFLAGS: 00010246 RAX: ffffc90006326048 RBX: ffffc90006326000 RCX: 1ffff92000c64c09 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90006326058 RBP: ffff8880a2cc7998 R08: fffff52000c64c0c R09: fffff52000c64c0b R10: fffff52000c64c0b R11: ffffc9000632605b R12: 0000000000000000 R13: ffffc90006326058 R14: ffff8880a2cc7b88 R15: ffff88809d572980 FS: 00007fd0ddd63700(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001ce8888 CR3: 00000000a97d0000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400