Hello, syzbot found the following crash on: HEAD commit: 24085f70 Merge tag 'trace-v5.7-rc4' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=117087fa100000 kernel config: https://syzkaller.appspot.com/x/.config?x=efdde85c3af536b5 dashboard link: https://syzkaller.appspot.com/bug?extid=8672dcb9d10011c0a160 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101c09dc100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=178fa32c100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+8672dcb9d10011c0a160@xxxxxxxxxxxxxxxxxxxxxxxxx RBP: 0000000000000006 R08: 0000000000000002 R09: 0000000002003033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402f60 R13: 0000000000402ff0 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7052 at kernel/trace/blktrace.c:1115 blk_register_tracepoints kernel/trace/blktrace.c:1115 [inline] WARNING: CPU: 0 PID: 7052 at kernel/trace/blktrace.c:1115 get_probe_ref+0x327/0x3e0 kernel/trace/blktrace.c:324 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7052 Comm: syz-executor149 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:175 [inline] fixup_bug arch/x86/kernel/traps.c:170 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:blk_register_tracepoints kernel/trace/blktrace.c:1115 [inline] RIP: 0010:get_probe_ref+0x327/0x3e0 kernel/trace/blktrace.c:324 Code: 8a e8 3d d3 fb ff 31 ff 89 c3 89 c6 e8 62 56 fa ff 85 db 0f 84 1e fd ff ff e8 e5 54 fa ff 0f 0b e9 12 fd ff ff e8 d9 54 fa ff <0f> 0b e9 45 fd ff ff e8 cd 54 fa ff 0f 0b e9 66 fd ff ff e8 c1 54 RSP: 0018:ffffc900016a7b88 EFLAGS: 00010293 RAX: ffff8880953ba600 RBX: 00000000fffffff4 RCX: ffffffff8178dbdb RDX: 0000000000000000 RSI: ffffffff8178de97 RDI: 0000000000000005 RBP: ffff8880a4640700 R08: ffff8880953ba600 R09: fffffbfff133f1c1 R10: ffffffff899f8e07 R11: fffffbfff133f1c0 R12: ffff8880a019d100 R13: ffff888089d24a10 R14: 0000000000000000 R15: ffff8880a4640730 do_blk_trace_setup+0x7d3/0xb30 kernel/trace/blktrace.c:550 __blk_trace_setup+0xca/0x180 kernel/trace/blktrace.c:571 blk_trace_setup+0x43/0x60 kernel/trace/blktrace.c:589 sg_ioctl_common+0x2f8/0x2720 drivers/scsi/sg.c:1120 sg_ioctl+0x8f/0x120 drivers/scsi/sg.c:1163 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:771 __do_sys_ioctl fs/ioctl.c:780 [inline] __se_sys_ioctl fs/ioctl.c:778 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:778 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x445ca9 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 2b ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff1c9ef988 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fff1c9ef990 RCX: 0000000000445ca9 RDX: 0000000020000140 RSI: 00000000c0481273 RDI: 0000000000000004 RBP: 0000000000000006 R08: 0000000000000002 R09: 0000000002003033 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402f60 R13: 0000000000402ff0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
