ci2 starts bisection 2023-04-21 15:00:12.034792849 +0000 UTC m=+19953.149620228
bisecting fixing commit since 5448b2fda85f2d90de03f053226f721ba2f7e731
building syzkaller on 5205ef306e8b4217fc49cb8d8bd18670b7d08c3c
ensuring issue is reproducible on original commit 5448b2fda85f2d90de03f053226f721ba2f7e731

testing commit 5448b2fda85f2d90de03f053226f721ba2f7e731 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 635f38d7ec82259653552bcbacbb050099b44061baec4cc5b91fcec111c16325
all runs: crashed: kernel BUG in ext4_writepages
testing current HEAD 7364b7abbafbeaab61d763c46d84145488b98a3c
testing commit 7364b7abbafbeaab61d763c46d84145488b98a3c gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 70e39b5ddd8957ab6a51825fa62360575f7cc366be4417cae71e1e66d575535c
all runs: crashed: kernel BUG in ext4_writepages
revisions tested: 2, total time: 24m10.736100645s (build: 17m48.507593441s, test: 5m31.129093606s)
the crash still happens on HEAD
commit msg: Merge branch 'android13-5.15' into android13-5.15-lts
crash: kernel BUG in ext4_writepages
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2745!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_writepages+0x33a0/0x33b0 fs/ext4/inode.c:2744
Code: ff 0d bc f4 38 7e 49 bf 00 00 00 00 00 fc ff df 4c 8b a4 24 b8 00 00 00 0f 85 50 fb ff ff e8 df f4 36 ff e9 46 fb ff ff 0f 0b <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 53 48
RSP: 0018:ffffc90000087060 EFLAGS: 00010247
RAX: 1ffff110217c669d RBX: ffff88810be334e8 RCX: ffffffff81c94a4c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88810be334e8
RBP: ffffc90000087470 R08: dffffc0000000000 R09: ffffed10217c669e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810ee80000
R13: 0000000000000001 R14: ffff88810e222000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555555fa728 CR3: 000000010c3b7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x433/0x6a0 mm/page-writeback.c:2366
 __writeback_single_inode+0xae/0x720 fs/fs-writeback.c:1622
 writeback_sb_inodes+0x87e/0x1500 fs/fs-writeback.c:1905
 wb_writeback+0x357/0x810 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2222 [inline]
 wb_workfn+0x3ac/0xe90 fs/fs-writeback.c:2263
 process_one_work+0x635/0xa70 kernel/workqueue.c:2313
 worker_thread+0x8bb/0xf40 kernel/workqueue.c:2460
 kthread+0x3a1/0x480 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 <unknown>:298
 </TASK>
Modules linked in:
---[ end trace ddfd81b42a371621 ]---
RIP: 0010:ext4_writepages+0x33a0/0x33b0 fs/ext4/inode.c:2744
Code: ff 0d bc f4 38 7e 49 bf 00 00 00 00 00 fc ff df 4c 8b a4 24 b8 00 00 00 0f 85 50 fb ff ff e8 df f4 36 ff e9 46 fb ff ff 0f 0b <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 53 48
RSP: 0018:ffffc90000087060 EFLAGS: 00010247
RAX: 1ffff110217c669d RBX: ffff88810be334e8 RCX: ffffffff81c94a4c
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88810be334e8
RBP: ffffc90000087470 R08: dffffc0000000000 R09: ffffed10217c669e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810ee80000
R13: 0000000000000001 R14: ffff88810e222000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555555fa728 CR3: 000000010c3b7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400