ci starts bisection 2023-05-21 21:31:03.567394283 +0000 UTC m=+131185.909289348
bisecting fixing commit since 65aca32efdcb0965502d3db2f1fa33838c070952
building syzkaller on fbf0499acc828df26995835e51d83c3a0117e716
ensuring issue is reproducible on original commit 65aca32efdcb0965502d3db2f1fa33838c070952

testing commit 65aca32efdcb0965502d3db2f1fa33838c070952 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8ed6feed7840aed25cd7f7af0a2f6709bc94af304088edb0b5cdba6a2b6bdabb
run #0: crashed: kernel BUG in ext4_do_writepages
run #1: crashed: kernel BUG in __ext4_journal_stop
run #2: crashed: kernel BUG in ext4_do_writepages
run #3: crashed: kernel BUG in ext4_do_writepages
run #4: crashed: kernel BUG in ext4_do_writepages
run #5: crashed: kernel BUG in ext4_do_writepages
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in __ext4_journal_stop
run #8: crashed: kernel BUG in ext4_do_writepages
run #9: crashed: kernel BUG in ext4_do_writepages
run #10: OK
run #11: OK
run #12: OK
run #13: crashed: kernel BUG in __ext4_journal_stop
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 44c026a73be8038f03dbdeef028b642880cf1511
testing commit 44c026a73be8038f03dbdeef028b642880cf1511 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 75dbb1159286970685ed74d8788d0dbaddacb3fc46a11826c3389f0f83bad76c
run #0: crashed: kernel BUG in ext4_do_writepages
run #1: crashed: kernel BUG in ext4_do_writepages
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in ext4_do_writepages
run #4: crashed: kernel BUG in ext4_do_writepages
run #5: OK
run #6: crashed: kernel BUG in ext4_do_writepages
run #7: OK
run #8: OK
run #9: OK
crash still not fixed/happens on the oldest tested release
revisions tested: 2, total time: 38m18.014072536s (build: 19m45.460509058s, test: 17m48.634233413s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 6.4-rc3
crash: kernel BUG in ext4_do_writepages
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2588!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2809 Comm: kworker/u4:5 Not tainted 6.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x3500/0x3510 fs/ext4/inode.c:2587
Code: 10 00 00 48 c7 c7 80 cd 09 8c 4c 89 f2 e8 68 cc f6 01 48 ba 00 00 00 00 00 fc ff df e9 d7 d2 ff ff 0f 0b 0f 0b e8 80 8e 95 07 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 66 0f 1f 00 41 57
RSP: 0018:ffffc9000b2ceee0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888078709e50 RCX: 1ffff1100f0e13ca
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888078709e50
RBP: ffffc9000b2cf230 R08: dffffc0000000000 R09: ffffed100f0e13cb
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000b2cf730
R13: 0000000000000001 R14: ffff88804f428000 R15: ffff88807870a0b0
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555570f1848 CR3: 0000000079b03000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_writepages+0x1f1/0x390 fs/ext4/inode.c:2792
 do_writepages+0x33b/0x5d0 mm/page-writeback.c:2551
 __writeback_single_inode+0xf5/0x9f0 fs/fs-writeback.c:1603
 writeback_sb_inodes+0x61b/0xea0 fs/fs-writeback.c:1894
 wb_writeback+0x380/0x8f0 fs/fs-writeback.c:2068
 wb_do_writeback fs/fs-writeback.c:2211 [inline]
 wb_workfn+0x3c7/0xde0 fs/fs-writeback.c:2251
 process_one_work+0x797/0xe20 kernel/workqueue.c:2405
 worker_thread+0x8c9/0xfd0 kernel/workqueue.c:2552
 kthread+0x276/0x2f0 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x3500/0x3510 fs/ext4/inode.c:2587
Code: 10 00 00 48 c7 c7 80 cd 09 8c 4c 89 f2 e8 68 cc f6 01 48 ba 00 00 00 00 00 fc ff df e9 d7 d2 ff ff 0f 0b 0f 0b e8 80 8e 95 07 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 66 0f 1f 00 41 57
RSP: 0018:ffffc9000b2ceee0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888078709e50 RCX: 1ffff1100f0e13ca
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888078709e50
RBP: ffffc9000b2cf230 R08: dffffc0000000000 R09: ffffed100f0e13cb
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000b2cf730
R13: 0000000000000001 R14: ffff88804f428000 R15: ffff88807870a0b0
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdb09715889 CR3: 000000007a083000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400