ci2 starts bisection 2023-02-06 16:17:21.848645408 +0000 UTC m=+10519.741076354
bisecting fixing commit since cf562a45a0d57fb0333363c9d4ff82d061898355
building syzkaller on f4470a7b5efeb021c66c8fb38656bcb2b1597974
ensuring issue is reproducible on original commit cf562a45a0d57fb0333363c9d4ff82d061898355

testing commit cf562a45a0d57fb0333363c9d4ff82d061898355 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 1cb5fe8ab88240bebe5353927dba4e7e077e84bcd835bf094b19143c62ab9240
run #0: crashed: kernel BUG in ext4_writepages
run #1: crashed: kernel BUG in ext4_writepages
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in ext4_writepages
run #4: crashed: kernel BUG in ext4_writepages
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in ext4_writepages
run #7: crashed: kernel BUG in __ext4_journal_stop
run #8: crashed: kernel BUG in ext4_writepages
run #9: crashed: kernel BUG in ext4_writepages
run #10: crashed: kernel BUG in ext4_writepages
run #11: crashed: kernel BUG in ext4_writepages
run #12: crashed: kernel BUG in __ext4_journal_stop
run #13: crashed: kernel BUG in ext4_writepages
run #14: crashed: kernel BUG in __ext4_journal_stop
run #15: crashed: kernel BUG in __ext4_journal_stop
run #16: crashed: kernel BUG in ext4_writepages
run #17: crashed: kernel BUG in ext4_writepages
run #18: crashed: kernel BUG in __ext4_journal_stop
run #19: crashed: kernel BUG in ext4_writepages
testing current HEAD d2d11f342b179f1894a901f143ec7c008caba43e
testing commit d2d11f342b179f1894a901f143ec7c008caba43e gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: c469c5746e11dfe8d8edece44dd02fef7fdf00db5622a437b2e5c281daba5494
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in __ext4_journal_stop
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: crashed: kernel BUG in ext4_do_writepages
run #6: crashed: kernel BUG in ext4_do_writepages
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
revisions tested: 2, total time: 39m50.821598053s (build: 30m27.593570304s, test: 6m29.548139746s)
the crash still happens on HEAD
commit msg: Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
crash: kernel BUG in ext4_do_writepages
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2782!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 6.2.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x31c1/0x31d0
Code: 89 e8 63 22 a3 ff 0f 0b be 00 10 00 00 48 c7 c7 40 a1 e9 8b 4c 89 f2 e8 7d 6c fc 01 e9 e5 d4 ff ff 0f 0b 0f 0b e8 7f cc 83 07 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 66 0f 1f 00 41 57 41
RSP: 0018:ffffc90000aa6ea0 EFLAGS: 00010247
RAX: 1ffff1100ecd63cd RBX: ffff8880766b1e68 RCX: ffffffff820bcf6e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880766b1e68
RBP: ffffc90000aa7210 R08: dffffc0000000000 R09: ffffed100ecd63ce
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880766b20c8
R13: ffffc90000aa7710 R14: ffff8880766b20c8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0007cbff8 CR3: 000000007f1c8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_writepages+0x1cd/0x270
 do_writepages+0x340/0x5c0
 __writeback_single_inode+0x116/0xe50
 writeback_sb_inodes+0x65c/0x1050
 wb_writeback+0x3c8/0xbc0
 wb_workfn+0x403/0xee0
 process_one_work+0x805/0x1040
 worker_thread+0x8c9/0xfd0
 kthread+0x232/0x2b0
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x31c1/0x31d0
Code: 89 e8 63 22 a3 ff 0f 0b be 00 10 00 00 48 c7 c7 40 a1 e9 8b 4c 89 f2 e8 7d 6c fc 01 e9 e5 d4 ff ff 0f 0b 0f 0b e8 7f cc 83 07 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 66 0f 1f 00 41 57 41
RSP: 0018:ffffc90000aa6ea0 EFLAGS: 00010247
RAX: 1ffff1100ecd63cd RBX: ffff8880766b1e68 RCX: ffffffff820bcf6e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880766b1e68
RBP: ffffc90000aa7210 R08: dffffc0000000000 R09: ffffed100ecd63ce
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880766b20c8
R13: ffffc90000aa7710 R14: ffff8880766b20c8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055650440f680 CR3: 000000000ba8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400