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general protection fault in bcsp_recv

Status: upstream: reported C repro on 2025/02/15 17:18
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+4ed6852d4da4606c93da@syzkaller.appspotmail.com
First crash: 94d, last: 1h15m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bluetooth?] general protection fault in bcsp_recv 0 (2) 2025/04/02 23:56
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 BUG: unable to handle kernel paging request in bcsp_recv origin:upstream C 8 1d00h 19d 0/3 upstream: reported C repro on 2025/04/27 13:45
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/03/02 10:08 9m retest repro linux-next error

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]
CPU: 1 UID: 0 PID: 8848 Comm: syz-executor204 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:bcsp_recv+0x10a/0x17f0 drivers/bluetooth/hci_bcsp.c:590
Code: 18 48 c1 e8 03 48 01 e8 48 89 04 24 48 8d 83 78 01 00 00 48 89 44 24 28 48 c1 e8 03 48 89 44 24 08 e8 aa 07 5c f9 48 8b 04 24 <80> 38 00 0f 85 d1 12 00 00 4c 8b ab 08 01 00 00 31 ff 4c 89 ee e8
RSP: 0018:ffffc9000cfb7bf0 EFLAGS: 00010293
RAX: dffffc0000000021 RBX: 0000000000000000 RCX: ffffffff885f47fa
RDX: ffff888057ad8000 RSI: ffffffff885f4846 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffc9000cfb7d88
R13: ffffc9000cfb7d88 R14: 0000000000000001 R15: ffff88807ea8ec00
FS:  00007f5e1232e6c0(0000) GS:ffff888124ab2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5e12377b30 CR3: 0000000053bbc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x251/0x7e0 drivers/bluetooth/hci_ldisc.c:627
 tiocsti drivers/tty/tty_io.c:2299 [inline]
 tty_ioctl+0x57d/0x1610 drivers/tty/tty_io.c:2716
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e123b73e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5e1232e218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5e12441348 RCX: 00007f5e123b73e9
RDX: 0000200000000100 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007f5e12441340 R08: 00007ffc3a359837 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5e1240e074
R13: 0000200000000000 R14: 00002000000000c0 R15: 0000200000000100
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bcsp_recv+0x10a/0x17f0 drivers/bluetooth/hci_bcsp.c:590
Code: 18 48 c1 e8 03 48 01 e8 48 89 04 24 48 8d 83 78 01 00 00 48 89 44 24 28 48 c1 e8 03 48 89 44 24 08 e8 aa 07 5c f9 48 8b 04 24 <80> 38 00 0f 85 d1 12 00 00 4c 8b ab 08 01 00 00 31 ff 4c 89 ee e8
RSP: 0018:ffffc9000cfb7bf0 EFLAGS: 00010293
RAX: dffffc0000000021 RBX: 0000000000000000 RCX: ffffffff885f47fa
RDX: ffff888057ad8000 RSI: ffffffff885f4846 RDI: 0000000000000005
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffc9000cfb7d88
R13: ffffc9000cfb7d88 R14: 0000000000000001 R15: ffff88807ea8ec00
FS:  00007f5e1232e6c0(0000) GS:ffff8881249b2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564d751800b8 CR3: 0000000053bbc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	18 48 c1             	sbb    %cl,-0x3f(%rax)
   3:	e8 03 48 01 e8       	call   0xe801480b
   8:	48 89 04 24          	mov    %rax,(%rsp)
   c:	48 8d 83 78 01 00 00 	lea    0x178(%rbx),%rax
  13:	48 89 44 24 28       	mov    %rax,0x28(%rsp)
  18:	48 c1 e8 03          	shr    $0x3,%rax
  1c:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  21:	e8 aa 07 5c f9       	call   0xf95c07d0
  26:	48 8b 04 24          	mov    (%rsp),%rax
* 2a:	80 38 00             	cmpb   $0x0,(%rax) <-- trapping instruction
  2d:	0f 85 d1 12 00 00    	jne    0x1304
  33:	4c 8b ab 08 01 00 00 	mov    0x108(%rbx),%r13
  3a:	31 ff                	xor    %edi,%edi
  3c:	4c 89 ee             	mov    %r13,%rsi
  3f:	e8                   	.byte 0xe8

Crashes (250):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/22 00:05 upstream 9d7a0577c9db 2a20f901 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/04/02 23:55 upstream acc4d5ff0b61 684b5338 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/02/12 00:00 linux-next df5d6180169a f2baddf5 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in bcsp_recv
2025/05/17 04:15 upstream 3c21441eeffc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in bcsp_recv
2025/05/15 20:27 upstream 546bce579204 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in bcsp_recv
2025/05/15 16:52 upstream 546bce579204 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in bcsp_recv
2025/05/14 04:01 upstream e9565e23cd89 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/13 07:32 upstream 627277ba7c23 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/10 17:09 upstream 3013c33dcbd9 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in bcsp_recv
2025/05/07 16:10 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/06 08:28 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/04 10:38 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/03 23:44 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in bcsp_recv
2025/05/02 18:20 upstream ebd297a2affa b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in bcsp_recv
2025/05/16 20:24 upstream 3c21441eeffc f41472b0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/16 15:49 upstream fee3e843b309 cfde8269 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/16 05:32 upstream fee3e843b309 cfde8269 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/16 02:35 upstream 088d13246a46 cfde8269 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/15 21:40 upstream 088d13246a46 cfde8269 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/15 12:03 upstream c94d59a126cb d6b2ee52 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/15 02:43 upstream c94d59a126cb d6b2ee52 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/14 20:28 upstream 9f35e33144ae a4fa04ef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/14 16:34 upstream 9f35e33144ae a4fa04ef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/14 15:25 upstream 9f35e33144ae a4fa04ef .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/14 08:15 upstream 405e6c37c89e 7344edeb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 23:42 upstream 405e6c37c89e 7344edeb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 22:17 upstream 405e6c37c89e 7344edeb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 15:38 upstream e9565e23cd89 9497799b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 10:20 upstream e9565e23cd89 9497799b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 03:56 upstream 627277ba7c23 f6671af7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 02:58 upstream 627277ba7c23 f6671af7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/13 01:13 upstream 627277ba7c23 f6671af7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/12 05:27 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/12 03:12 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/11 17:10 upstream 3ce9925823c7 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/11 15:36 upstream 3ce9925823c7 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/11 09:26 upstream 3ce9925823c7 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/08 16:26 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in bcsp_recv
2025/05/08 12:40 upstream d76bb1ebb558 dbf35fa1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/08 06:51 upstream d76bb1ebb558 dbf35fa1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/07 12:04 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/07 03:34 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/07 01:50 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/06 21:05 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/06 20:30 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/06 05:54 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/05 07:29 upstream 92a09c47464d b0714e37 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in bcsp_recv
2025/05/05 04:01 upstream 081bc61f9312 b0714e37 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/05 02:24 upstream e8ab83e34bdc b0714e37 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in bcsp_recv
2025/05/04 21:49 upstream 081bc61f9312 b0714e37 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/03 04:51 upstream 00b827f0cffa b0714e37 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/04/29 16:34 upstream ca91b9500108 4a62c0b1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/04/29 08:30 upstream ca91b9500108 aeb6ec69 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/04/29 06:32 upstream f15d97df5afa aeb6ec69 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in bcsp_recv
2025/05/06 11:49 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in bcsp_recv
2025/05/04 09:16 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in bcsp_recv
2025/05/02 01:43 upstream 4f79eaa2ceac 51b137cd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in bcsp_recv
2025/04/02 05:43 linux-next fefb886b1344 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in bcsp_recv
2025/05/16 04:01 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c919f08732cc cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in bcsp_recv
2025/05/16 00:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c919f08732cc cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in bcsp_recv
2025/05/15 13:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c919f08732cc d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in bcsp_recv
2025/04/27 22:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c72692105976 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in bcsp_recv
* Struck through repros no longer work on HEAD.