syzkaller login: [ 66.062209] sshd (240) used greatest stack depth: 24232 bytes left Warning: Permanently added '[localhost]:1569' (ECDSA) to the list of known hosts. 2025/01/20 16:41:16 fuzzer started 2025/01/20 16:41:17 dialing manager at localhost:44833 2025/01/20 16:41:17 checking machine... 2025/01/20 16:41:17 checking revisions... [ 67.943522] kmemleak: Automatic memory scanning thread ended 2025/01/20 16:41:17 testing simple program... [ 68.084460] cgroup: Unknown subsys name 'net' [ 68.172139] cgroup: Unknown subsys name 'cpuset' [ 68.212856] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 75.037997] kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak) executing program executing program executing program [ 85.339805] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) executing program [ 85.912882] audit: type=1400 audit(1737391295.563:7): avc: denied { execmem } for pid=272 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 87.108928] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 87.110903] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 87.112144] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 87.117168] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 87.121044] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 87.122310] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 executing program [ 89.190206] Bluetooth: hci0: command tx timeout [ 91.236849] Bluetooth: hci0: command tx timeout executing program [ 93.284841] Bluetooth: hci0: command tx timeout executing program [ 95.333200] Bluetooth: hci0: command tx timeout executing program executing program executing program executing program executing program executing program [ 114.995953] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 114.996192] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 115.110321] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 115.110521] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program 2025/01/20 16:42:05 building call list... [ 116.100564] syz-executor.0 (273) used greatest stack depth: 23968 bytes left [ 116.138930] [ 116.139282] ====================================================== [ 116.140162] WARNING: possible circular locking dependency detected [ 116.141046] 6.13.0-rc7-next-20250120 #1 Not tainted [ 116.142055] ------------------------------------------------------ [ 116.143886] kworker/u8:2/726 is trying to acquire lock: [ 116.145187] ffffffff8621eb28 (rtnl_mutex){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.147483] [ 116.147483] but task is already holding lock: [ 116.148864] ffff88801a800768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0xf2/0x6b0 [ 116.151502] [ 116.151502] which lock already depends on the new lock. [ 116.151502] [ 116.153506] [ 116.153506] the existing dependency chain (in reverse order) is: [ 116.155683] [ 116.155683] -> #1 (&rdev->wiphy.mtx){+.+.}-{4:4}: [ 116.156657] __mutex_lock+0x13d/0xb50 [ 116.157336] wiphy_register+0x1b2e/0x25d0 [ 116.158053] ieee80211_register_hw+0x23a4/0x3d60 [ 116.158840] mac80211_hwsim_new_radio+0x2759/0x4d60 [ 116.159664] init_mac80211_hwsim+0x389/0x870 [ 116.160423] do_one_initcall+0xf9/0x640 [ 116.161137] kernel_init_freeable+0x53d/0x7a0 [ 116.161908] kernel_init+0x1e/0x2d0 [ 116.162524] ret_from_fork+0x48/0x80 [ 116.163149] ret_from_fork_asm+0x1a/0x30 [ 116.163855] [ 116.163855] -> #0 (rtnl_mutex){+.+.}-{4:4}: [ 116.164773] __lock_acquire+0x29fd/0x4580 [ 116.165474] lock_acquire+0x19b/0x520 [ 116.166131] __mutex_lock+0x13d/0xb50 [ 116.166799] unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.167715] unregister_netdevice_queue+0x224/0x2e0 [ 116.168529] _cfg80211_unregister_wdev+0x57b/0x700 [ 116.169343] ieee80211_remove_interfaces+0x2f2/0x6b0 [ 116.170140] ieee80211_unregister_hw+0x55/0x3a0 [ 116.170901] hwsim_exit_net+0x3a0/0x730 [ 116.171574] ops_exit_list+0xb3/0x180 [ 116.172217] cleanup_net+0x546/0xad0 [ 116.172882] process_one_work+0x8ee/0x1a10 [ 116.173611] worker_thread+0x674/0xe70 [ 116.174293] kthread+0x3ab/0x720 [ 116.174898] ret_from_fork+0x48/0x80 [ 116.175515] ret_from_fork_asm+0x1a/0x30 [ 116.176213] [ 116.176213] other info that might help us debug this: [ 116.176213] [ 116.177298] Possible unsafe locking scenario: [ 116.177298] [ 116.178120] CPU0 CPU1 [ 116.178763] ---- ---- [ 116.179413] lock(&rdev->wiphy.mtx); [ 116.179992] lock(rtnl_mutex); [ 116.180835] lock(&rdev->wiphy.mtx); [ 116.181729] lock(rtnl_mutex); [ 116.182244] [ 116.182244] *** DEADLOCK *** [ 116.182244] [ 116.183060] 4 locks held by kworker/u8:2/726: [ 116.183702] #0: ffff888008fdb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12b6/0x1a10 [ 116.185175] #1: ffff88801e9dfd30 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x861/0x1a10 [ 116.186587] #2: ffffffff86212b50 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xca/0xad0 [ 116.187901] #3: ffff88801a800768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0xf2/0x6b0 [ 116.189380] [ 116.189380] stack backtrace: [ 116.190010] CPU: 0 UID: 0 PID: 726 Comm: kworker/u8:2 Not tainted 6.13.0-rc7-next-20250120 #1 [ 116.191158] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 116.192257] Workqueue: netns cleanup_net [ 116.192864] Call Trace: [ 116.193225] [ 116.193553] dump_stack_lvl+0xca/0x120 [ 116.194148] print_circular_bug+0x47b/0x750 [ 116.194776] check_noncircular+0x2e9/0x3c0 [ 116.195390] ? __pfx_check_noncircular+0x10/0x10 [ 116.196075] ? hlock_class+0x4e/0x130 [ 116.196632] ? srso_return_thunk+0x5/0x5f [ 116.197257] ? mark_lock+0xac/0xed0 [ 116.197799] ? lockdep_lock+0xba/0x1b0 [ 116.198400] ? __pfx_lockdep_lock+0x10/0x10 [ 116.199053] __lock_acquire+0x29fd/0x4580 [ 116.199678] ? __pfx___lock_acquire+0x10/0x10 [ 116.200329] ? lock_release+0x20f/0x6f0 [ 116.200924] ? __pfx_lock_release+0x10/0x10 [ 116.201550] ? srso_return_thunk+0x5/0x5f [ 116.202181] lock_acquire+0x19b/0x520 [ 116.202745] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.203577] ? __pfx_lock_acquire+0x10/0x10 [ 116.204205] ? srso_return_thunk+0x5/0x5f [ 116.204839] ? lock_is_held_type+0x9e/0x120 [ 116.205478] ? srso_return_thunk+0x5/0x5f [ 116.206101] __mutex_lock+0x13d/0xb50 [ 116.206680] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.207497] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.208321] ? srso_return_thunk+0x5/0x5f [ 116.208969] ? synchronize_rcu_expedited+0x38a/0x420 [ 116.209691] ? __pfx___mutex_lock+0x10/0x10 [ 116.210332] ? srso_return_thunk+0x5/0x5f [ 116.210950] ? srso_return_thunk+0x5/0x5f [ 116.211566] ? kasan_quarantine_put+0x84/0x1e0 [ 116.212243] ? __pfx_wait_rcu_exp_gp+0x10/0x10 [ 116.212894] ? srso_return_thunk+0x5/0x5f [ 116.213516] unregister_netdevice_many_notify+0x1612/0x1c80 [ 116.214318] ? __virt_addr_valid+0x2e8/0x5d0 [ 116.214970] ? __pfx_lock_release+0x10/0x10 [ 116.215594] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 116.216429] ? find_held_lock+0x2c/0x110 [ 116.217052] ? srso_return_thunk+0x5/0x5f [ 116.217671] ? kernfs_remove_by_name_ns+0xc7/0x130 [ 116.218391] ? srso_return_thunk+0x5/0x5f [ 116.219007] ? lock_release+0x20f/0x6f0 [ 116.219582] ? __pfx_lock_release+0x10/0x10 [ 116.220205] ? srso_return_thunk+0x5/0x5f [ 116.220823] ? lockdep_hardirqs_on_prepare+0x262/0x3f0 [ 116.221564] ? srso_return_thunk+0x5/0x5f [ 116.222187] unregister_netdevice_queue+0x224/0x2e0 [ 116.222889] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 116.223653] ? up_write+0x195/0x520 [ 116.224202] _cfg80211_unregister_wdev+0x57b/0x700 [ 116.224913] ? srso_return_thunk+0x5/0x5f [ 116.225533] ieee80211_remove_interfaces+0x2f2/0x6b0 [ 116.226231] ? __pfx_ieee80211_remove_interfaces+0x10/0x10 [ 116.226993] ? srso_return_thunk+0x5/0x5f [ 116.227606] ? srso_return_thunk+0x5/0x5f [ 116.228218] ? synchronize_rcu+0x1ff/0x260 [ 116.228825] ieee80211_unregister_hw+0x55/0x3a0 [ 116.229491] hwsim_exit_net+0x3a0/0x730 [ 116.230064] ? __pfx_hwsim_exit_net+0x10/0x10 [ 116.230700] ? srso_return_thunk+0x5/0x5f [ 116.231312] ? netdev_run_todo+0x788/0x1040 [ 116.231940] ? __pfx_hwsim_exit_net+0x10/0x10 [ 116.232584] ops_exit_list+0xb3/0x180 [ 116.233141] cleanup_net+0x546/0xad0 [ 116.233682] ? __pfx_cleanup_net+0x10/0x10 [ 116.234306] process_one_work+0x8ee/0x1a10 [ 116.234939] ? __pfx_lock_acquire+0x10/0x10 [ 116.235574] ? __pfx_process_one_work+0x10/0x10 [ 116.236270] ? srso_return_thunk+0x5/0x5f [ 116.236886] ? move_linked_works+0x172/0x270 [ 116.237505] ? srso_return_thunk+0x5/0x5f [ 116.238109] ? assign_work+0x196/0x240 [ 116.238683] worker_thread+0x674/0xe70 [ 116.239261] ? lockdep_hardirqs_on_prepare+0x262/0x3f0 [ 116.239994] ? srso_return_thunk+0x5/0x5f [ 116.240609] ? __pfx_worker_thread+0x10/0x10 [ 116.241256] kthread+0x3ab/0x720 [ 116.241764] ? __pfx_kthread+0x10/0x10 [ 116.242330] ? srso_return_thunk+0x5/0x5f [ 116.242969] ? finish_task_switch.isra.0+0x206/0x840 [ 116.243760] ? __pfx_kthread+0x10/0x10 [ 116.244347] ret_from_fork+0x48/0x80 [ 116.244878] ? __pfx_kthread+0x10/0x10 [ 116.245447] ret_from_fork_asm+0x1a/0x30 [ 116.246057] executing program [ 121.382489] audit: type=1400 audit(1737391331.032:8): avc: denied { create } for pid=253 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 executing program [ 122.314294] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 123.395336] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list executing program VM DIAGNOSIS: 16:42:05 Registers: info registers vcpu 0 RAX=dffffc0000000005 RBX=00000000000003f9 RCX=0000000000000000 RDX=00000000000003f9 RSI=ffffffff8283e250 RDI=ffffffff886990a0 RBP=ffffffff88699060 RSP=ffff88801e9deb30 R8 =0000000000000001 R9 =ffffed1003d3bd55 R10=0000000000000001 R11=3038383866666666 R12=ffffffff886990b0 R13=ffff88801e9dee28 R14=ffffffff88699320 R15=0000000000000000 RIP=ffffffff8283e2a5 RFL=00000006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000000c0008a2000 CR3=000000000b822000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=0000000000000000bfe62e42fefa39ef XMM03=0000ff00000000000000000000000000 XMM04=732f6c61636f6c2f7273752f3d485441 XMM05=622f6c61636f6c2f7273752f3a6e6962 XMM06=73752f3a6e6962732f7273752f3a6e69 XMM07=6e69622f3a6e6962732f3a6e69622f72 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000030 RCX=ffffffff84a53507 RDX=0000000000000000 RSI=0000000000000000 RDI=0000000000000000 RBP=0000000000000000 RSP=ffff88801567f6f0 R8 =0000000000000001 R9 =ffffed10031e64da R10=0000000000000000 R11=0000000000000000 R12=ffff888018f33000 R13=0000001000000000 R14=ffff888018f33000 R15=ffff888018f326d8 RIP=ffffffff81719e68 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 000000c000031210 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000000c0008ba000 CR3=000000000b822000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000004236d387139a0000 XMM02=00000000000000003fde666666666666 XMM03=00000000000000003fde666666666666 XMM04=00000000000000003fd185c539146b5d XMM05=000000c0000748d8000000c0000748d0 XMM06=00000000000000003fd3333333333333 XMM07=00000000000000003fd0000000000000 XMM08=00000000000000003fe24b4011f0ce64 XMM09=00000000000000003fb8c066f5ecd988 XMM10=00000000000000003fd6addaac506e04 XMM11=000000c0000748c0000000c0000748b8 XMM12=000000c0000748d0000000c0000748c8 XMM13=000000c0000748e0000000c0000748d8 XMM14=000000c0000b2210000000c00008cf10 XMM15=000000c0000b2370000000c0000b22c0