> On Mon, 13 Dec 2021 at 08:17, syzbot > <syzbot+e3cad3a4e3f03bc00562@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: >> >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: 4eee8d0b64ec Add linux-next specific files for 20211208 >> git tree: linux-next >> console output: https://syzkaller.appspot.com/x/log.txt?x=130203e5b00000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=20b74d9da4ce1ef1 >> dashboard link: https://syzkaller.appspot.com/bug?extid=e3cad3a4e3f03bc00562 >> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101eb355b00000 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b8f805b00000 >> >> The issue was bisected to: >> >> commit 3e54c5890c87a30b1019a3de9dab968ff2b21e06 >> Author: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx> >> Date: Wed Dec 1 18:55:03 2021 +0000 >> >> Bluetooth: hci_event: Use of a function table to handle HCI events >> >> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=150100bab00000 >> final oops: https://syzkaller.appspot.com/x/report.txt?x=170100bab00000 >> console output: https://syzkaller.appspot.com/x/log.txt?x=130100bab00000 >> >> IMPORTANT: if you fix the issue, please add the following tag to the commit: >> Reported-by: syzbot+e3cad3a4e3f03bc00562@xxxxxxxxxxxxxxxxxxxxxxxxx >> Fixes: 3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events") > > Presumably this was fixed by Luiz's patch: > https://github.com/torvalds/linux/commit/72279d17df54d5e4e7910b39c61a3f3464e36633 > > Let's close on syzbot to get new reports in future: > > #syz fix: Bluetooth: hci_event: Rework hci_inquiry_result_with_rssi_evt I see the command but can't find the corresponding bug. The email is sent to syzbot+HASH@xxxxxxxxxxxxxxxxxxxxxxxxx address but the HASH does not correspond to any known bug. Please double check the address. > > >> Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 >> Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 >> Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 >> Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 >> general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN >> KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] >> CPU: 0 PID: 6545 Comm: kworker/u5:1 Not tainted 5.16.0-rc4-next-20211208-syzkaller #0 >> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 >> Workqueue: hci0 hci_rx_work >> RIP: 0010:hci_inquiry_result_with_rssi_evt+0xbc/0x970 net/bluetooth/hci_event.c:4520 >> Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 88 07 00 00 48 8b 04 24 4c 8b 28 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 1b 07 00 00 >> RSP: 0018:ffffc90001aafad0 EFLAGS: 00010246 >> RAX: dffffc0000000000 RBX: ffff88807e754000 RCX: 0000000000000000 >> RDX: 0000000000000000 RSI: ffffffff883588a8 RDI: ffff88807e754000 >> RBP: ffff88807e754000 R08: 0000000000000000 R09: 0000000000000000 >> R10: ffffffff88376f27 R11: 0000000000000000 R12: ffff88807015eb40 >> R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 >> FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00007ffd653f7000 CR3: 0000000071f88000 CR4: 00000000003506f0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >> Call Trace: >> <TASK> >> hci_event_func net/bluetooth/hci_event.c:6812 [inline] >> hci_event_packet+0x817/0xe90 net/bluetooth/hci_event.c:6860 >> hci_rx_work+0x4fa/0xd30 net/bluetooth/hci_core.c:3817 >> process_one_work+0x9b2/0x1690 kernel/workqueue.c:2318 >> worker_thread+0x658/0x11f0 kernel/workqueue.c:2465 >> kthread+0x405/0x4f0 kernel/kthread.c:345 >> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 >> </TASK> >> Modules linked in: >> ---[ end trace 403a15c54e29c5c4 ]--- >> RIP: 0010:hci_inquiry_result_with_rssi_evt+0xbc/0x970 net/bluetooth/hci_event.c:4520 >> Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 88 07 00 00 48 8b 04 24 4c 8b 28 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 1b 07 00 00 >> RSP: 0018:ffffc90001aafad0 EFLAGS: 00010246 >> RAX: dffffc0000000000 RBX: ffff88807e754000 RCX: 0000000000000000 >> RDX: 0000000000000000 RSI: ffffffff883588a8 RDI: ffff88807e754000 >> RBP: ffff88807e754000 R08: 0000000000000000 R09: 0000000000000000 >> R10: ffffffff88376f27 R11: 0000000000000000 R12: ffff88807015eb40 >> R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 >> FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00007f2bb803f018 CR3: 000000001d893000 CR4: 00000000003506f0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >> ---------------- >> Code disassembly (best guess), 4 bytes skipped: >> 0: 48 c1 ea 03 shr $0x3,%rdx >> 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) >> 8: 0f 85 88 07 00 00 jne 0x796 >> e: 48 8b 04 24 mov (%rsp),%rax >> 12: 4c 8b 28 mov (%rax),%r13 >> 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax >> 1c: fc ff df >> 1f: 4c 89 ea mov %r13,%rdx >> 22: 48 c1 ea 03 shr $0x3,%rdx >> * 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction >> 2a: 4c 89 ea mov %r13,%rdx >> 2d: 83 e2 07 and $0x7,%edx >> 30: 38 d0 cmp %dl,%al >> 32: 7f 08 jg 0x3c >> 34: 84 c0 test %al,%al >> 36: 0f 85 1b 07 00 00 jne 0x757 >> >> >> --- >> This report 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 issue. See: >> https://goo.gl/tpsmEJ#status for how to communicate with syzbot. >> For information about bisection process see: https://goo.gl/tpsmEJ#bisection >> syzbot can test patches for this issue, for details see: >> https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/CACT4Y%2BbRrWXYGgKdbK3AFQLNUumJbSzujEJ%3D%2B37dcDBjzJg72A%40mail.gmail.com.
