ci2 starts bisection 2023-05-28 13:21:07.749305517 +0000 UTC m=+158160.710744479
bisecting fixing commit since 1f5abbd77e2c1787e74b7c2caffac97def78ba52
building syzkaller on 1dac8c7a01e2bdd35cb04eb4901ddb157291ac2d
ensuring issue is reproducible on original commit 1f5abbd77e2c1787e74b7c2caffac97def78ba52

testing commit 1f5abbd77e2c1787e74b7c2caffac97def78ba52 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 055c247a6963722d0c36f10a492a58e7b6a06f28afe081ceb49d51c67fcdb81f
all runs: crashed: WARNING in lookup_slow
testing current HEAD 7877cb91f1081754a1487c144d85dc0d2e2e7fc4
testing commit 7877cb91f1081754a1487c144d85dc0d2e2e7fc4 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 6dfd5eb4ab70fe30c49b457c2301b903e4edff5bcd6142c9073ff46bb7172c36
all runs: crashed: WARNING in lookup_slow
crash still not fixed/happens on the oldest tested release
revisions tested: 2, total time: 47m52.441720663s (build: 40m0.872104004s, test: 7m8.051550822s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 6.4-rc4
crash: WARNING in lookup_slow
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x1, magic = 0xffff888072db5bb0, owner = 0xffff888025211dc0, curr 0xffff888025213b80, list empty
WARNING: CPU: 0 PID: 6338 at kernel/locking/rwsem.c:1343 __up_read+0x602/0x690
Modules linked in:
CPU: 0 PID: 6338 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__up_read+0x602/0x690
Code: ca 89 48 0f 44 c1 48 c7 c7 00 7d ca 89 48 c7 c6 a0 7d ca 89 4c 89 fa 4c 89 f1 49 89 d8 4d 89 e9 50 e8 52 9a ea ff 48 83 c4 08 <0f> 0b 48 bb 00 00 00 00 00 fc ff df 4c 8b 2c 24 e9 4e fb ff ff 48
RSP: 0018:ffffc90006407a80 EFLAGS: 00010292
RAX: 4379fb4bf1c7f700 RBX: ffff888025211dc0 RCX: 0000000000000002
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffffc90006407b30 R08: dffffc0000000000 R09: fffff52000c80ed1
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888072db5c08
R13: ffff888025213b80 R14: ffff888072db5bb0 R15: 0000000000000001
FS:  00007fc115eb8700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc10c1fe000 CR3: 000000001b185000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lookup_slow+0x59/0x70
 walk_component+0x283/0x3b0
 path_lookupat+0x99/0x360
 filename_lookup+0x275/0x5c0
 user_path_at_empty+0x37/0x140
 __se_sys_chdir+0xab/0x1e0
 do_syscall_64+0x41/0xc0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc11508c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007fc115eb8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007fc1151ac050 RCX: 00007fc11508c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000380
RBP: 00007fc1150e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6eaf854f R14: 00007fc115eb8300 R15: 0000000000022000
 </TASK>