ci starts bisection 2023-05-16 19:31:25.395312182 +0000 UTC m=+15481.427412761
bisecting fixing commit since ffb39098bf87db327b2be4b5c6f1087bcba94ce9
building syzkaller on 8a2121976b8020f2006c1a953766af912ba709dd
ensuring issue is reproducible on original commit ffb39098bf87db327b2be4b5c6f1087bcba94ce9

testing commit ffb39098bf87db327b2be4b5c6f1087bcba94ce9 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 8a2096c7274461cd308ed8badd76c2c63b41b76b989f7da98bc42f211ebfd135
all runs: crashed: kernel BUG in dbFindLeaf
testing current HEAD f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6
testing commit f1fcbaa18b28dec10281551dfe6ed3a3ed80e3d6 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e22e8b0a5c87e228d20ffae62029bf9bb353ff52b67780b29e2e55c002e61b00
all runs: crashed: kernel BUG in dbFindLeaf
crash still not fixed/happens on the oldest tested release
revisions tested: 2, total time: 49m53.700054029s (build: 42m34.574767288s, test: 6m29.956496879s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 6.4-rc2
crash: kernel BUG in dbFindLeaf
loop0: detected capacity change from 0 to 32768
BUG at fs/jfs/jfs_dmap.c:2949 assert(n < 4)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:2949!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5443 Comm: syz-executor.0 Not tainted 6.4.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:dbFindLeaf+0x107/0x220 fs/jfs/jfs_dmap.c:2949
Code: f0 7d 29 83 c3 01 44 39 eb 75 ba 48 c7 c1 c0 cc 47 89 ba 85 0b 00 00 48 c7 c6 00 cb 47 89 48 c7 c7 40 cb 47 89 e8 e9 98 ac fe <0f> 0b 8d 04 9d 01 00 00 00 83 e9 01 75 87 49 8d 7c 24 08 48 b8 00
RSP: 0018:ffffc90004b4f520 EFLAGS: 00010246
RAX: 000000000000002b RBX: 000000000000001d RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff89665980 RDI: 0000000000000001
RBP: 000000000000001c R08: 0000000000000001 R09: ffffc90004b4f347
R10: fffff52000969e68 R11: 0000000000000001 R12: ffff8880255e6010
R13: 000000000000001d R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f4e7fbfe700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff629912095 CR3: 000000007500b000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 dbAllocDmapLev+0x86/0x280 fs/jfs/jfs_dmap.c:1953
 dbAlloc+0x681/0xab0 fs/jfs/jfs_dmap.c:841
 extBalloc fs/jfs/jfs_extent.c:321 [inline]
 extAlloc+0x434/0xc70 fs/jfs/jfs_extent.c:122
 jfs_get_block+0x503/0x940 fs/jfs/inode.c:248
 __block_write_begin_int+0x2af/0xf60 fs/buffer.c:2064
 __block_write_begin fs/buffer.c:2114 [inline]
 block_write_begin+0x6e/0x320 fs/buffer.c:2175
 jfs_write_begin+0x27/0xc0 fs/jfs/inode.c:299
 generic_perform_write+0x210/0x490 mm/filemap.c:3923
 __generic_file_write_iter+0x20e/0x410 mm/filemap.c:4051
 generic_file_write_iter+0xc1/0x2c0 mm/filemap.c:4083
 call_write_iter include/linux/fs.h:1868 [inline]
 do_iter_readv_writev+0x191/0x2e0 fs/read_write.c:735
 do_iter_write+0x125/0x6e0 fs/read_write.c:860
 vfs_writev+0x16c/0x520 fs/read_write.c:933
 do_writev+0x105/0x280 fs/read_write.c:976
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4e8048a5a9
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:00007f4e7fbfe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f4e805abf80 RCX: 00007f4e8048a5a9
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f4e804e5580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff273691bf R14: 00007f4e7fbfe300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindLeaf+0x107/0x220 fs/jfs/jfs_dmap.c:2949
Code: f0 7d 29 83 c3 01 44 39 eb 75 ba 48 c7 c1 c0 cc 47 89 ba 85 0b 00 00 48 c7 c6 00 cb 47 89 48 c7 c7 40 cb 47 89 e8 e9 98 ac fe <0f> 0b 8d 04 9d 01 00 00 00 83 e9 01 75 87 49 8d 7c 24 08 48 b8 00
RSP: 0018:ffffc90004b4f520 EFLAGS: 00010246
RAX: 000000000000002b RBX: 000000000000001d RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff89665980 RDI: 0000000000000001
RBP: 000000000000001c R08: 0000000000000001 R09: ffffc90004b4f347
R10: fffff52000969e68 R11: 0000000000000001 R12: ffff8880255e6010
R13: 000000000000001d R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f4e7fbfe700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd01524ef8 CR3: 000000007500b000 CR4: 0000000000350ee0