ci2 starts bisection 2022-11-17 14:09:06.387465932 +0000 UTC m=+142603.984364557
bisecting fixing commit since 44b8b2ac1d962d045c39c4109b428a6e8fef5c6d
building syzkaller on b31320fc8f3519e40494f64ebf77c13d16284bfd
ensuring issue is reproducible on original commit 44b8b2ac1d962d045c39c4109b428a6e8fef5c6d

testing commit 44b8b2ac1d962d045c39c4109b428a6e8fef5c6d gcc
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 1381d522e9ae69b787b5538455c7855af39146dae4bfb3f4ca5e88bfae86ea1e
all runs: crashed: kernel BUG in ext4_writepages
testing current HEAD 4ec71a9ec7698108e0ad7d59ef41df064cc72049
testing commit 4ec71a9ec7698108e0ad7d59ef41df064cc72049 gcc
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: ad12ed448c79049e2f8967c8d5d2b2d4a91ca8cd33c1f9dad3db29d6a0130d17
all runs: crashed: kernel BUG in ext4_writepages
revisions tested: 2, total time: 16m29.190215464s (build: 10m34.222073753s, test: 5m30.244049955s)
the crash still happens on HEAD
commit msg: ANDROID: cpu/hotplug: call perf event through function pointer
crash: kernel BUG in ext4_writepages
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none.
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2731!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 486 Comm: syz-executor.0 Not tainted 5.15.74-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:ext4_writepages+0x34be/0x34c0 fs/ext4/inode.c:2730
Code: 44 89 e1 45 89 f0 e8 61 2c 07 00 65 ff 0d 62 91 30 7e 48 8b 9c 24 f0 00 00 00 0f 85 ca fa ff ff e8 cf 92 2e ff e9 c0 fa ff ff <0f> 0b 55 48 89 e5 53 48 89 fb be 08 00 00 00 e8 1e 67 cc ff f0 80
RSP: 0018:ffffc900005af280 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888109934670 RCX: 1ffff110213268ce
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888109934670
RBP: ffffc900005af670 R08: dffffc0000000000 R09: ffffed10213268cf
R10: ffffed10213268cf R11: 1ffff110213268ce R12: 0000000000000001
R13: ffffc900005af540 R14: ffff88810eb1a000 R15: ffffc900005af8a0
FS:  00007fbad958d700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055791583fea0 CR3: 00000001235d0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x435/0x6b0 mm/page-writeback.c:2364
 filemap_fdatawrite_wbc+0x19b/0x200 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 file_write_and_wait_range+0x1c6/0x290 mm/filemap.c:810
 ext4_sync_file+0x173/0x7b0 fs/ext4/fsync.c:151
 vfs_fsync_range+0x11c/0x140 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2949 [inline]
 ext4_buffered_write_iter+0x4b6/0x540 fs/ext4/file.c:279
 ext4_file_write_iter+0x455/0x1900
 call_write_iter include/linux/fs.h:2129 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x78d/0xe70 fs/read_write.c:594
 ksys_write+0x15b/0x240 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x76/0x80 fs/read_write.c:656
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fbad96195a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbad958d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbad9739f80 RCX: 00007fbad96195a9
RDX: 0000000000000088 RSI: 0000000020000440 RDI: 0000000000000006
RBP: 00007fbad9674580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff85cafd4f R14: 00007fbad958d300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 69dad14e6c218fde ]---
RIP: 0010:ext4_writepages+0x34be/0x34c0 fs/ext4/inode.c:2730
Code: 44 89 e1 45 89 f0 e8 61 2c 07 00 65 ff 0d 62 91 30 7e 48 8b 9c 24 f0 00 00 00 0f 85 ca fa ff ff e8 cf 92 2e ff e9 c0 fa ff ff <0f> 0b 55 48 89 e5 53 48 89 fb be 08 00 00 00 e8 1e 67 cc ff f0 80
RSP: 0018:ffffc900005af280 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff888109934670 RCX: 1ffff110213268ce
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888109934670
RBP: ffffc900005af670 R08: dffffc0000000000 R09: ffffed10213268cf
R10: ffffed10213268cf R11: 1ffff110213268ce R12: 0000000000000001
R13: ffffc900005af540 R14: ffff88810eb1a000 R15: ffffc900005af8a0
FS:  00007fbad958d700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055791583fea0 CR3: 00000001235d0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400