ci starts bisection 2023-01-31 18:08:12.346568105 +0000 UTC m=+773806.292630173
bisecting fixing commit since c8451c141e07a8d05693f6c8d0e418fbb4b68bb7
building syzkaller on ab32d50881df9f96f2af301aadca62ad00b7e099
ensuring issue is reproducible on original commit c8451c141e07a8d05693f6c8d0e418fbb4b68bb7

testing commit c8451c141e07a8d05693f6c8d0e418fbb4b68bb7 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e0abf7b719ec0ac76edadf69de26d185ec9dedb0d4d2968e7fb73cafcc4ac482
all runs: crashed: WARNING in blk_register_tracepoints
testing current HEAD 9f266ccaa2f5228bfe67ad58a94ca4e0109b954a
testing commit 9f266ccaa2f5228bfe67ad58a94ca4e0109b954a gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: dd2f146badd2430485670a09341fc12901e23eab9eb53d033a1079778cb584f5
all runs: crashed: WARNING in blk_register_tracepoints
revisions tested: 2, total time: 24m33.721370871s (build: 17m38.466444799s, test: 6m20.095677286s)
the crash still happens on HEAD
commit msg: Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
crash: WARNING in blk_register_tracepoints
RAX: ffffffffffffffda RBX: 00007fcce37abf80 RCX: 00007fcce368c0a9
RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fcce449e1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffdc0c8ae2f R14: 00007fcce449e300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5700 at kernel/trace/blktrace.c:1102 blk_register_tracepoints+0x1d3/0x240 kernel/trace/blktrace.c:1100
Modules linked in:
CPU: 1 PID: 5700 Comm: syz-executor.0 Not tainted 6.2.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:blk_register_tracepoints+0x1d3/0x240 kernel/trace/blktrace.c:1102
Code: fb ff 85 c0 75 7f 31 d2 48 c7 c6 30 02 7b 81 48 c7 c7 40 9d 4f 8d e8 9c af fb ff 85 c0 75 01 c3 0f 0b c3 0f 0b e9 4a fe ff ff <0f> 0b e9 60 fe ff ff 0f 0b e9 76 fe ff ff 0f 0b e9 8c fe ff ff 0f
RSP: 0018:ffffc90004b3fc00 EFLAGS: 00010282
RAX: 00000000fffffff4 RBX: 0000000000000000 RCX: ffff88807dc45700
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc90004b3faa0
RBP: ffffc90004b3fc90 R08: 0000000000000001 R09: ffffc90004b3faa7
R10: fffff52000967f54 R11: 0000000000000000 R12: ffff88801d4cc3c8
R13: 0000000000000000 R14: ffff888075c75cb0 R15: ffff888075c75c80
FS:  00007fcce449e700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5d05ba9ee CR3: 000000007979e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 get_probe_ref kernel/trace/blktrace.c:337 [inline]
 do_blk_trace_setup+0x7d8/0xa20 kernel/trace/blktrace.c:612
 __blk_trace_setup+0xac/0x130 kernel/trace/blktrace.c:631
 blk_trace_setup+0x42/0x60 kernel/trace/blktrace.c:649
 sg_ioctl_common drivers/scsi/sg.c:1117 [inline]
 sg_ioctl+0x595/0x2470 drivers/scsi/sg.c:1159
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x123/0x190 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcce368c0a9
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:00007fcce449e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcce37abf80 RCX: 00007fcce368c0a9
RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fcce449e1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffdc0c8ae2f R14: 00007fcce449e300 R15: 0000000000022000
 </TASK>