bisecting fixing commit since d8ad2ce873abab1cfd38779c626b79cef6307aac
building syzkaller on a7dab6385c1d95547a88e22577fb56fbcd5c37eb
testing commit d8ad2ce873abab1cfd38779c626b79cef6307aac
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 72be6a01d28a513fbfb7ed343d53adcb792f5455d58e9e52769b844c71eb833c
all runs: crashed: WARNING in blk_register_tracepoints
testing current HEAD 1831fed559732b132aef0ea8261ac77e73f7eadf
testing commit 1831fed559732b132aef0ea8261ac77e73f7eadf
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: a51d220234853bb54ddd9cc6e2c51dba592e8caf84b9e57adce8a990824b83f3
run #0: crashed: WARNING in blk_register_tracepoints
run #1: crashed: WARNING in blk_register_tracepoints
run #2: crashed: WARNING in blk_register_tracepoints
run #3: crashed: WARNING in blk_register_tracepoints
run #4: crashed: WARNING in blk_register_tracepoints
run #5: crashed: WARNING in blk_register_tracepoints
run #6: crashed: WARNING in blk_register_tracepoints
run #7: crashed: WARNING in blk_register_tracepoints
run #8: crashed: WARNING in blk_register_tracepoints
run #9: OK
revisions tested: 2, total time: 21m33.310717897s (build: 11m47.936769205s, test: 9m17.764733432s)
the crash still happens on HEAD
commit msg: Merge tag 'drm-fixes-2022-04-08' of git://anongit.freedesktop.org/drm/drm
crash: WARNING in blk_register_tracepoints
RBP: 00007fffab567870 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000000 R14: 00007fffab567890 R15: 00007fffab567880
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4056 at kernel/trace/blktrace.c:1100 blk_register_tracepoints+0x1cc/0x240 kernel/trace/blktrace.c:1131
Modules linked in:
CPU: 1 PID: 4056 Comm: syz-executor290 Not tainted 5.18.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:blk_register_tracepoints+0x1cc/0x240 kernel/trace/blktrace.c:1100
Code: 40 45 95 8c e8 b5 da fb ff 85 c0 75 7f 31 d2 48 c7 c6 f0 c7 72 81 48 c7 c7 e0 44 95 8c e8 9c da 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
RSP: 0018:ffffc900049f7bf8 EFLAGS: 00010282
RAX: 00000000fffffff4 RBX: 0000000000000000 RCX: ffff88807da63a00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc900049f7a98
RBP: ffffc900049f7c88 R08: 0000000000000001 R09: ffffc900049f7a9f
R10: fffff5200093ef53 R11: 0000000000000001 R12: ffff88801a142e40
R13: 0000000000000005 R14: ffff88801e4dbdb0 R15: ffff88801e4dbd80
FS:  0000555556a0a300(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07bc5c7284 CR3: 000000007c070000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 get_probe_ref kernel/trace/blktrace.c:336 [inline]
 do_blk_trace_setup+0x7d8/0xa20 kernel/trace/blktrace.c:580
 __blk_trace_setup+0xac/0x130 kernel/trace/blktrace.c:599
 blk_trace_setup+0x3e/0x60 kernel/trace/blktrace.c:617
 sg_ioctl_common drivers/scsi/sg.c:1121 [inline]
 sg_ioctl+0x215/0x2490 drivers/scsi/sg.c:1163
 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+0x11f/0x190 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f07bc56f799
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffab567858 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f07bc56f799
RDX: 0000000020000140 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fffab567870 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000000 R14: 00007fffab567890 R15: 00007fffab567880
 </TASK>