syzbot


BUG: corrupted list in mgmt_pending_remove

Status: upstream: reported on 2024/09/01 08:24
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+cc0cc52e7f43dc9e6df1@syzkaller.appspotmail.com
First crash: 101d, last: 1d04h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bluetooth?] BUG: corrupted list in mgmt_pending_remove 0 (1) 2024/09/01 08:24
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in mgmt_pending_remove bluetooth C unreliable 9 741d 761d 22/28 fixed on 2023/02/24 14:17

Sample crash report:
list_del corruption, ffff88802943da00->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:58!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 7763 Comm: syz.0.694 Not tainted 6.11.0-rc5-syzkaller-00151-gfe1910f9337b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 71 64 fc 06 90 0f 0b 48 c7 c7 c0 90 60 8c 4c 89 fe e8 5f 64 fc 06 90 0f 0b 48 c7 c7 20 91 60 8c 4c 89 fe e8 4d 64 fc 06 90 <0f> 0b 48 c7 c7 80 91 60 8c 4c 89 fe e8 3b 64 fc 06 90 0f 0b 48 c7
RSP: 0018:ffffc9000492fb58 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 5f038e50b22bff00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8174013c R09: 1ffff92000925f0c
R10: dffffc0000000000 R11: fffff52000925f0d R12: dffffc0000000000
R13: dffffc0000000000 R14: dead000000000100 R15: ffff88802943da00
FS:  00007fb7679de6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc967a2fc0 CR3: 00000000437dc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 mgmt_pending_remove+0x26/0x1a0 net/bluetooth/mgmt_util.c:314
 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0xe6/0x340 net/bluetooth/mgmt.c:9395
 hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1833 [inline]
 __sys_bind+0x23d/0x2f0 net/socket.c:1857
 __do_sys_bind net/socket.c:1865 [inline]
 __se_sys_bind net/socket.c:1863 [inline]
 __x64_sys_bind+0x7a/0x90 net/socket.c:1863
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb767f79eb9
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:00007fb7679de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00007fb768116058 RCX: 00007fb767f79eb9
RDX: 0000000000000006 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fb767fe793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb768116058 R15: 00007fffd1ff2828
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 71 64 fc 06 90 0f 0b 48 c7 c7 c0 90 60 8c 4c 89 fe e8 5f 64 fc 06 90 0f 0b 48 c7 c7 20 91 60 8c 4c 89 fe e8 4d 64 fc 06 90 <0f> 0b 48 c7 c7 80 91 60 8c 4c 89 fe e8 3b 64 fc 06 90 0f 0b 48 c7
RSP: 0018:ffffc9000492fb58 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 5f038e50b22bff00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8174013c R09: 1ffff92000925f0c
R10: dffffc0000000000 R11: fffff52000925f0d R12: dffffc0000000000
R13: dffffc0000000000 R14: dead000000000100 R15: ffff88802943da00
FS:  00007fb7679de6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f773e8e8178 CR3: 00000000437dc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/01 08:23 net fe1910f9337b 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce BUG: corrupted list in mgmt_pending_remove
2024/09/03 00:12 net-next 55ddb6c5a3ae abeaa9b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: corrupted list in mgmt_pending_remove
2024/08/21 15:15 net-next 4d36b2b1dea4 db5852f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: corrupted list in mgmt_pending_remove
2024/06/07 11:12 net-next 62b5bf58b928 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce BUG: corrupted list in mgmt_pending_remove
2024/08/03 01:53 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root KASAN: slab-use-after-free Read in mgmt_pending_remove
2024/09/15 14:41 upstream 0babf683783d 08d8a733 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 KASAN: slab-use-after-free Read in mgmt_pending_remove
2024/06/24 06:41 net 02ea312055da edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: slab-use-after-free Read in mgmt_pending_remove
* Struck through repros no longer work on HEAD.