| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2024/04/25 | upstream (ToT) | e88c4cfcb7b8 | C | [report] possible deadlock in team_del_slave |
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| Date | Name | Commit | Repro | Result |
|---|---|---|---|---|
| 2024/04/25 | upstream (ToT) | e88c4cfcb7b8 | C | [report] possible deadlock in team_del_slave |
| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| upstream | possible deadlock in team_del_slave net | 1 | 958d | 956d | 0/26 | auto-closed as invalid on 2022/01/16 14:16 | |||
| upstream | possible deadlock in team_del_slave (2) net | 35 | 295d | 459d | 0/26 | auto-obsoleted due to no activity on 2023/09/28 12:50 | |||
| linux-5.15 | possible deadlock in team_del_slave (2) origin:lts-only | C | 12 | 7d00h | 112d | 0/3 | upstream: reported C repro on 2024/01/12 21:46 | ||
| upstream | possible deadlock in team_del_slave (3) net | C | 8649 | 3d17h | 7d16h | 0/26 | upstream: reported C repro on 2024/04/26 11:59 | ||
| linux-5.15 | possible deadlock in team_del_slave | 1 | 384d | 384d | 0/3 | auto-obsoleted due to no activity on 2023/08/13 07:03 |
netlink: 'syz-executor186': attribute type 10 has an invalid length.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor186'.
team0: Port device wlan0 added
======================================================
WARNING: possible circular locking dependency detected
6.1.83-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor186/3555 is trying to acquire lock:
ffff8880737ccd00 (team->team_lock_key){+.+.}-{3:3}, at: team_del_slave+0x2e/0x1c0 drivers/net/team/team.c:2001
but task is already holding lock:
ffff88807d4c07c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_del_interface+0x112/0x130 net/wireless/nl80211.c:4332
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&rdev->wiphy.mtx){+.+.}-{3:3}:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747
wiphy_lock include/net/cfg80211.h:5639 [inline]
ieee80211_open+0x13a/0x1f0 net/mac80211/iface.c:437
__dev_open+0x377/0x510 net/core/dev.c:1457
dev_open+0xa9/0x260 net/core/dev.c:1493
team_port_add drivers/net/team/team.c:1217 [inline]
team_add_slave+0x96e/0x2760 drivers/net/team/team.c:1987
do_set_master net/core/rtnetlink.c:2598 [inline]
do_setlink+0xe99/0x3e30 net/core/rtnetlink.c:2808
rtnl_setlink+0x3f1/0x560 net/core/rtnetlink.c:3092
rtnetlink_rcv_msg+0x818/0xff0 net/core/rtnetlink.c:6121
netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508
netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352
netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514
___sys_sendmsg net/socket.c:2568 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2597
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (team->team_lock_key){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747
team_del_slave+0x2e/0x1c0 drivers/net/team/team.c:2001
team_device_event+0x269/0x570 drivers/net/team/team.c:3044
notifier_call_chain kernel/notifier.c:87 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455
call_netdevice_notifiers_info net/core/dev.c:1970 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
call_netdevice_notifiers net/core/dev.c:2022 [inline]
unregister_netdevice_many+0xec1/0x17a0 net/core/dev.c:10881
unregister_netdevice_queue+0x2e6/0x350 net/core/dev.c:10812
unregister_netdevice include/linux/netdevice.h:3045 [inline]
_cfg80211_unregister_wdev+0x174/0x570 net/wireless/core.c:1205
ieee80211_if_remove+0x1cc/0x2d0 net/mac80211/iface.c:2291
ieee80211_del_iface+0x15/0x20 net/mac80211/cfg.c:202
rdev_del_virtual_intf net/wireless/rdev-ops.h:62 [inline]
cfg80211_remove_virtual_intf+0x270/0x490 net/wireless/util.c:2502
genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850
netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508
genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352
netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514
___sys_sendmsg net/socket.c:2568 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2597
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rdev->wiphy.mtx);
lock(team->team_lock_key);
lock(&rdev->wiphy.mtx);
lock(team->team_lock_key);
*** DEADLOCK ***
3 locks held by syz-executor186/3555:
#0: ffffffff8e2f8030 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:860
#1: ffffffff8e2991e8 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x5b/0x8a0 net/wireless/nl80211.c:16189
#2: ffff88807d4c07c8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: nl80211_del_interface+0x112/0x130 net/wireless/nl80211.c:4332
stack backtrace:
CPU: 1 PID: 3555 Comm: syz-executor186 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747
team_del_slave+0x2e/0x1c0 drivers/net/team/team.c:2001
team_device_event+0x269/0x570 drivers/net/team/team.c:3044
notifier_call_chain kernel/notifier.c:87 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455
call_netdevice_notifiers_info net/core/dev.c:1970 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
call_netdevice_notifiers net/core/dev.c:2022 [inline]
unregister_netdevice_many+0xec1/0x17a0 net/core/dev.c:10881
unregister_netdevice_queue+0x2e6/0x350 net/core/dev.c:10812
unregister_netdevice include/linux/netdevice.h:3045 [inline]
_cfg80211_unregister_wdev+0x174/0x570 net/wireless/core.c:1205
ieee80211_if_remove+0x1cc/0x2d0 net/mac80211/iface.c:2291
ieee80211_del_iface+0x15/0x20 net/mac80211/cfg.c:202
rdev_del_virtual_intf net/wireless/rdev-ops.h:62 [inline]
cfg80211_remove_virtual_intf+0x270/0x490 net/wireless/util.c:2502
genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850
netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508
genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352
netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514
___sys_sendmsg net/socket.c:2568 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2597
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f556bb99899
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe454d618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f556bb99899
RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000031
R13: 00007fffe454d65c R14: 00007fffe454d690 R15: 0000000000000048
</TASK>
team0: Port device wlan0 removed
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024/03/27 14:17 | linux-6.1.y | e5cd595e23c1 | 454571b6 | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in team_del_slave | |
| 2024/04/06 08:20 | linux-6.1.y | 347385861c50 | ca620dd8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in team_del_slave | ||
| 2024/03/28 10:20 | linux-6.1.y | e5cd595e23c1 | 120789fd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | possible deadlock in team_del_slave | ||
| 2024/03/27 10:52 | linux-6.1.y | e5cd595e23c1 | 454571b6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in team_del_slave |