syzbot

 sign-in | mailing list | source | docs
🐞 Open [1500]
≡ Subsystems
🐞 Fixed [6528]
🐞 Invalid [16645]
⬇ Missing Backports [205]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

general protection fault in h5_recv

Status: upstream: reported C repro on 2025/02/09 15:45
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+b5691bb559396b262064@syzkaller.appspotmail.com
First crash: 203d, last: 7m
Cause bisection: introduced by (bisect log) :
commit c411c62cc13319533b1861e00cedc4883c3bc1bb
Author: Arseniy Krasnov <avkrasnov@salutedevices.com>
Date: Thu Jan 30 18:43:26 2025 +0000

  Bluetooth: hci_uart: fix race during initialization

Crash: BUG: unable to handle kernel NULL pointer dereference in h5_recv (log)
Repro: C syz .config
  
▶ ▼ Discussions (6)
Title Replies (including bot) Last reply
[syzbot] Monthly bluetooth report (Aug 2025) 0 (1) 2025/08/25 08:44
[syzbot] Monthly bluetooth report (Jul 2025) 0 (1) 2025/07/24 09:32
[syzbot] Monthly bluetooth report (Jun 2025) 0 (1) 2025/06/23 07:31
[syzbot] Monthly bluetooth report (May 2025) 0 (1) 2025/05/22 12:58
[syzbot] Monthly bluetooth report (Apr 2025) 0 (1) 2025/04/22 10:11
[syzbot] [bluetooth?] general protection fault in h5_recv 1 (5) 2025/02/12 00:12
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 general protection fault in h5_recv origin:upstream 8 C 7 9d01h 83d 0/3 upstream: reported C repro on 2025/06/04 06:57
linux-6.6 general protection fault in h5_recv 2 5 1d07h 55d 0/2 upstream: reported on 2025/07/02 07:26
linux-6.1 general protection fault in h5_recv origin:upstream 8 C 12 12d 115d 0/3 upstream: reported C repro on 2025/05/03 02:45
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/03/12 02:45 17m retest repro linux-next error
2025/03/12 02:45 9m retest repro linux-next error
2025/02/10 11:03 29m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master OK log

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 2 UID: 0 PID: 6107 Comm: syz.0.16 Not tainted 6.16.0-rc7-syzkaller-00140-gec2df4364666 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:h5_recv+0x104/0x910 drivers/bluetooth/hci_h5.c:572
Code: c1 e8 03 4c 01 f0 48 89 44 24 08 48 8d 83 08 03 00 00 48 89 44 24 30 48 c1 e8 03 48 89 44 24 10 e8 f1 b6 4e f9 48 8b 44 24 08 <80> 38 00 0f 85 ae 01 00 00 48 89 ea 48 89 e9 4c 8b bb f8 02 00 00
RSP: 0018:ffffc90003d07c00 EFLAGS: 00010293
RAX: dffffc000000005f RBX: 0000000000000000 RCX: ffffffff886d315a
RDX: ffff88802d382440 RSI: ffffffff886d319f RDI: 0000000000000005
RBP: ffffc90003d07d88 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffffff8cb35320
FS:  00007f88477fe6c0(0000) GS:ffff8880d6920000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88477fdf98 CR3: 0000000052142000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x251/0x7e0 drivers/bluetooth/hci_ldisc.c:627
 tiocsti drivers/tty/tty_io.c:2290 [inline]
 tty_ioctl+0x580/0x1640 drivers/tty/tty_io.c:2706
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f884858e9a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f88477fe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f88487b6080 RCX: 00007f884858e9a9
RDX: 0000200000000140 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007f8848610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f88487b6080 R15: 00007ffc83560bf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x104/0x910 drivers/bluetooth/hci_h5.c:572
Code: c1 e8 03 4c 01 f0 48 89 44 24 08 48 8d 83 08 03 00 00 48 89 44 24 30 48 c1 e8 03 48 89 44 24 10 e8 f1 b6 4e f9 48 8b 44 24 08 <80> 38 00 0f 85 ae 01 00 00 48 89 ea 48 89 e9 4c 8b bb f8 02 00 00
RSP: 0018:ffffc90003d07c00 EFLAGS: 00010293
RAX: dffffc000000005f RBX: 0000000000000000 RCX: ffffffff886d315a
RDX: ffff88802d382440 RSI: ffffffff886d319f RDI: 0000000000000005
RBP: ffffc90003d07d88 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffffff8cb35320
FS:  00007f88477fe6c0(0000) GS:ffff8880d6a20000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc83561010 CR3: 0000000052142000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	c1 e8 03             	shr    $0x3,%eax
   3:	4c 01 f0             	add    %r14,%rax
   6:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
   b:	48 8d 83 08 03 00 00 	lea    0x308(%rbx),%rax
  12:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  20:	e8 f1 b6 4e f9       	call   0xf94eb716
  25:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
* 2a:	80 38 00             	cmpb   $0x0,(%rax) <-- trapping instruction
  2d:	0f 85 ae 01 00 00    	jne    0x1e1
  33:	48 89 ea             	mov    %rbp,%rdx
  36:	48 89 e9             	mov    %rbp,%rcx
  39:	4c 8b bb f8 02 00 00 	mov    0x2f8(%rbx),%r15

Crashes (1410):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/27 20:21 upstream ec2df4364666 fb8f743d .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/05/22 09:14 upstream d608703fcdd9 0919b50b .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/07/29 07:20 linux-next d086c886ceb9 c4a95487 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/07/26 11:25 linux-next d086c886ceb9 fb8f743d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/06/26 07:12 linux-next 1b152eeca84a 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/06/26 03:37 linux-next 1b152eeca84a 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/06/26 00:02 linux-next 1b152eeca84a 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/06/25 20:27 linux-next 1b152eeca84a 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/06/25 16:58 linux-next 1b152eeca84a 26d77996 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/02/11 07:05 linux-next df5d6180169a 43f51a00 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in h5_recv
2025/02/09 15:44 linux-next ed58d103e6da ef44b750 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in h5_recv
2025/08/26 14:40 upstream fab1beda7597 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in h5_recv
2025/08/26 01:24 upstream b6add54ba618 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in h5_recv
2025/08/25 23:31 upstream 1b237f190eb3 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in h5_recv
2025/08/25 00:31 upstream c330cb607721 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in h5_recv
2025/08/21 20:10 upstream 32b7144f806e 0b9605c8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in h5_recv
2025/08/08 04:10 upstream 6e64f4580381 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in h5_recv
2025/08/07 04:49 upstream cca7a0aae895 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in h5_recv
2025/08/27 00:54 upstream fab1beda7597 e12e5ba4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/26 18:27 upstream fab1beda7597 e12e5ba4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/26 11:13 upstream fab1beda7597 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/26 10:04 upstream fab1beda7597 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/26 05:26 upstream b6add54ba618 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/25 22:27 upstream b6add54ba618 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/25 20:13 upstream b6add54ba618 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/25 12:42 upstream 1b237f190eb3 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/25 11:34 upstream 1b237f190eb3 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/25 08:04 upstream 1b237f190eb3 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 22:50 upstream 69fd6b99b8f8 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in h5_recv
2025/08/24 10:26 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 09:27 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 08:25 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 07:04 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 05:09 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 04:08 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 01:54 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/24 00:22 upstream 8d245acc1e88 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/23 16:32 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/23 14:56 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/23 11:01 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/23 06:33 upstream 6debb6904172 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in h5_recv
2025/08/23 03:09 upstream cf6fc5eefc5b bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 23:15 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in h5_recv
2025/08/22 19:57 upstream cf6fc5eefc5b bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 17:14 upstream cf6fc5eefc5b bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 13:45 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 12:44 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 11:33 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 07:38 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 05:23 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 03:57 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/22 01:03 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 22:50 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 21:56 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 18:58 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 09:36 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 07:15 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/21 04:43 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 12:40 upstream b19a97d57c15 bd178e57 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 11:38 upstream b19a97d57c15 bd178e57 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 10:24 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 09:08 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 07:31 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 07:31 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in h5_recv
2025/08/20 16:13 upstream b19a97d57c15 bd178e57 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in h5_recv
2025/08/20 19:02 linux-next 5303936d609e bd178e57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in h5_recv
2025/08/08 22:39 linux-next b1549501188c 987b750d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in h5_recv
2025/02/04 20:17 linux-next 40b8e93e17bf 4baca3d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in h5_recv
2025/04/05 17:18 upstream a8662bcd2ff1 1c65791e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root BUG: unable to handle kernel NULL pointer dereference in h5_recv
2025/08/24 15:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in h5_recv
2025/08/24 13:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in h5_recv
2025/08/22 10:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in h5_recv
* Struck through repros no longer work on HEAD.