Debian GNU/Linux 11 syzkaller ttyS0 Warning: Permanently added '[localhost]:25985' (ECDSA) to the list of known hosts. 2025/01/29 16:05:40 fuzzer started 2025/01/29 16:05:41 dialing manager at localhost:36977 2025/01/29 16:05:41 checking machine... 2025/01/29 16:05:41 checking revisions... syzkaller login: [ 62.662225] kmemleak: Automatic memory scanning thread ended 2025/01/29 16:05:41 testing simple program... [ 62.781468] cgroup: Unknown subsys name 'net' [ 62.885041] cgroup: Unknown subsys name 'cpuset' [ 62.931512] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program executing program executing program [ 79.448213] audit: type=1400 audit(1738166758.772:7): avc: denied { execmem } for pid=271 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 executing program [ 80.643459] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 80.648512] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 80.653960] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 80.664536] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 80.668154] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 80.670591] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 82.727739] Bluetooth: hci0: command tx timeout executing program [ 84.775510] Bluetooth: hci0: command tx timeout executing program [ 86.822526] Bluetooth: hci0: command tx timeout [ 88.870461] Bluetooth: hci0: command tx timeout executing program executing program executing program executing program executing program executing program executing program [ 108.276253] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.277804] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.359923] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.361412] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2025/01/29 16:06:28 building call list... [ 109.249885] syz-executor.0 (272) used greatest stack depth: 23520 bytes left [ 109.306545] [ 109.306862] ====================================================== [ 109.307644] WARNING: possible circular locking dependency detected [ 109.308417] 6.13.0-next-20250129 #1 Not tainted [ 109.309251] ------------------------------------------------------ [ 109.311558] kworker/u8:2/726 is trying to acquire lock: [ 109.312524] ffffffff8621d8a8 (rtnl_mutex){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.314891] [ 109.314891] but task is already holding lock: [ 109.316025] ffff888015450768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0xf2/0x6b0 [ 109.317853] [ 109.317853] which lock already depends on the new lock. [ 109.317853] [ 109.319258] [ 109.319258] the existing dependency chain (in reverse order) is: [ 109.321026] [ 109.321026] -> #1 (&rdev->wiphy.mtx){+.+.}-{4:4}: [ 109.321887] __mutex_lock+0x13d/0xb50 [ 109.322490] wiphy_register+0x1b2e/0x25d0 [ 109.323125] ieee80211_register_hw+0x23a4/0x3d60 [ 109.323830] mac80211_hwsim_new_radio+0x2759/0x4d60 [ 109.324569] init_mac80211_hwsim+0x389/0x870 [ 109.325245] do_one_initcall+0xf9/0x640 [ 109.325892] kernel_init_freeable+0x53d/0x7a0 [ 109.326576] kernel_init+0x1e/0x2d0 [ 109.327116] ret_from_fork+0x48/0x80 [ 109.327689] ret_from_fork_asm+0x1a/0x30 [ 109.328333] [ 109.328333] -> #0 (rtnl_mutex){+.+.}-{4:4}: [ 109.329119] __lock_acquire+0x29fd/0x4580 [ 109.329755] lock_acquire+0x19b/0x520 [ 109.330341] __mutex_lock+0x13d/0xb50 [ 109.330922] unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.331719] unregister_netdevice_queue+0x224/0x2e0 [ 109.332427] _cfg80211_unregister_wdev+0x57b/0x700 [ 109.333132] ieee80211_remove_interfaces+0x2f2/0x6b0 [ 109.333845] ieee80211_unregister_hw+0x55/0x3a0 [ 109.334523] hwsim_exit_net+0x3a0/0x730 [ 109.335112] ops_exit_list+0xb3/0x180 [ 109.335696] cleanup_net+0x546/0xad0 [ 109.336268] process_one_work+0x8ee/0x1a10 [ 109.336915] worker_thread+0x674/0xe70 [ 109.337534] kthread+0x3ab/0x720 [ 109.338091] ret_from_fork+0x48/0x80 [ 109.338647] ret_from_fork_asm+0x1a/0x30 [ 109.339289] [ 109.339289] other info that might help us debug this: [ 109.339289] [ 109.340235] Possible unsafe locking scenario: [ 109.340235] [ 109.340953] CPU0 CPU1 [ 109.341528] ---- ---- [ 109.342105] lock(&rdev->wiphy.mtx); [ 109.342620] lock(rtnl_mutex); [ 109.343361] lock(&rdev->wiphy.mtx); [ 109.344144] lock(rtnl_mutex); [ 109.344610] [ 109.344610] *** DEADLOCK *** [ 109.344610] [ 109.345353] 4 locks held by kworker/u8:2/726: [ 109.345927] #0: ffff888008fdb948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12b6/0x1a10 [ 109.347229] #1: ffff88801af17d30 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x861/0x1a10 [ 109.348472] #2: ffffffff862118d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xca/0xad0 [ 109.349610] #3: ffff888015450768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0xf2/0x6b0 [ 109.350907] [ 109.350907] stack backtrace: [ 109.351459] CPU: 1 UID: 0 PID: 726 Comm: kworker/u8:2 Not tainted 6.13.0-next-20250129 #1 [ 109.351515] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 109.351547] Workqueue: netns cleanup_net [ 109.351607] Call Trace: [ 109.351621] [ 109.351637] dump_stack_lvl+0xca/0x120 [ 109.351720] print_circular_bug+0x47b/0x750 [ 109.351788] check_noncircular+0x2e9/0x3c0 [ 109.351851] ? __pfx_check_noncircular+0x10/0x10 [ 109.351914] ? hlock_class+0x4e/0x130 [ 109.351959] ? srso_return_thunk+0x5/0x5f [ 109.352039] ? mark_lock+0xac/0xed0 [ 109.352104] ? lockdep_lock+0xba/0x1b0 [ 109.352189] ? __pfx_lockdep_lock+0x10/0x10 [ 109.352297] __lock_acquire+0x29fd/0x4580 [ 109.352377] ? __pfx___lock_acquire+0x10/0x10 [ 109.352441] ? lock_release+0x20f/0x6f0 [ 109.352507] ? __pfx_lock_release+0x10/0x10 [ 109.352570] ? srso_return_thunk+0x5/0x5f [ 109.352657] lock_acquire+0x19b/0x520 [ 109.352721] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.352793] ? __pfx_lock_acquire+0x10/0x10 [ 109.352863] ? srso_return_thunk+0x5/0x5f [ 109.352944] ? lock_is_held_type+0x9e/0x120 [ 109.353023] ? srso_return_thunk+0x5/0x5f [ 109.353109] __mutex_lock+0x13d/0xb50 [ 109.353185] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.353262] ? unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.353331] ? srso_return_thunk+0x5/0x5f [ 109.353411] ? synchronize_rcu_expedited+0x38a/0x420 [ 109.353476] ? __pfx___mutex_lock+0x10/0x10 [ 109.353555] ? srso_return_thunk+0x5/0x5f [ 109.353643] ? __pfx_wait_rcu_exp_gp+0x10/0x10 [ 109.353702] unregister_netdevice_many_notify+0x1612/0x1c80 [ 109.353780] ? __virt_addr_valid+0x2e8/0x5d0 [ 109.353858] ? __pfx_lock_release+0x10/0x10 [ 109.353924] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 109.353992] ? find_held_lock+0x2c/0x110 [ 109.354078] ? srso_return_thunk+0x5/0x5f [ 109.354162] ? kernfs_remove_by_name_ns+0xc7/0x130 [ 109.354257] ? srso_return_thunk+0x5/0x5f [ 109.354337] ? lock_release+0x20f/0x6f0 [ 109.354403] ? __pfx_lock_release+0x10/0x10 [ 109.354467] ? srso_return_thunk+0x5/0x5f [ 109.354547] ? lockdep_hardirqs_on_prepare+0x262/0x3f0 [ 109.354617] ? srso_return_thunk+0x5/0x5f [ 109.354705] unregister_netdevice_queue+0x224/0x2e0 [ 109.354769] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 109.354833] ? up_write+0x195/0x520 [ 109.354914] _cfg80211_unregister_wdev+0x57b/0x700 [ 109.354990] ? srso_return_thunk+0x5/0x5f [ 109.355076] ieee80211_remove_interfaces+0x2f2/0x6b0 [ 109.355131] ? __pfx_ieee80211_remove_interfaces+0x10/0x10 [ 109.355237] ? srso_return_thunk+0x5/0x5f [ 109.355318] ? srso_return_thunk+0x5/0x5f [ 109.355398] ? synchronize_rcu+0x1ff/0x260 [ 109.355461] ieee80211_unregister_hw+0x55/0x3a0 [ 109.355525] hwsim_exit_net+0x3a0/0x730 [ 109.355586] ? __pfx_hwsim_exit_net+0x10/0x10 [ 109.355645] ? srso_return_thunk+0x5/0x5f [ 109.355726] ? netdev_run_todo+0x788/0x1040 [ 109.355797] ? __pfx_hwsim_exit_net+0x10/0x10 [ 109.355860] ops_exit_list+0xb3/0x180 [ 109.355921] cleanup_net+0x546/0xad0 [ 109.355987] ? __pfx_cleanup_net+0x10/0x10 [ 109.356065] process_one_work+0x8ee/0x1a10 [ 109.356162] ? __pfx_lock_acquire+0x10/0x10 [ 109.356236] ? __pfx_process_one_work+0x10/0x10 [ 109.356323] ? srso_return_thunk+0x5/0x5f [ 109.356403] ? move_linked_works+0x172/0x270 [ 109.356469] ? srso_return_thunk+0x5/0x5f [ 109.356549] ? assign_work+0x196/0x240 [ 109.356634] worker_thread+0x674/0xe70 [ 109.356721] ? lockdep_hardirqs_on_prepare+0x262/0x3f0 [ 109.356798] ? srso_return_thunk+0x5/0x5f [ 109.356878] ? __pfx_worker_thread+0x10/0x10 [ 109.356967] kthread+0x3ab/0x720 [ 109.357044] ? __pfx_kthread+0x10/0x10 [ 109.357121] ? srso_return_thunk+0x5/0x5f [ 109.357203] ? finish_task_switch.isra.0+0x206/0x840 [ 109.357291] ? __pfx_kthread+0x10/0x10 [ 109.357371] ret_from_fork+0x48/0x80 [ 109.357417] ? __pfx_kthread+0x10/0x10 [ 109.357495] ret_from_fork_asm+0x1a/0x30 [ 109.357594] executing program executing program [ 114.718903] audit: type=1400 audit(1738166794.041:8): avc: denied { create } for pid=252 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 [ 115.520884] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list executing program [ 116.549028] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list 2025/01/29 16:06:37 syscalls: 2217 2025/01/29 16:06:37 code coverage: enabled 2025/01/29 16:06:37 comparison tracing: enabled 2025/01/29 16:06:37 extra coverage: enabled 2025/01/29 16:06:37 setuid sandbox: enabled 2025/01/29 16:06:37 namespace sandbox: enabled 2025/01/29 16:06:37 Android sandbox: enabled 2025/01/29 16:06:37 fault injection: enabled 2025/01/29 16:06:37 leak checking: enabled 2025/01/29 16:06:37 net packet injection: enabled 2025/01/29 16:06:37 net device setup: enabled 2025/01/29 16:06:37 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2025/01/29 16:06:37 devlink PCI setup: PCI device 0000:00:10.0 is not available 2025/01/29 16:06:37 USB emulation: enabled 2025/01/29 16:06:37 hci packet injection: enabled 2025/01/29 16:06:37 wifi device emulation: enabled 2025/01/29 16:06:37 802.15.4 emulation: enabled 2025/01/29 16:06:37 fetching corpus: 0, signal 0/0 (executing program) 2025/01/29 16:06:37 fetching corpus: 0, signal 0/0 (executing program) VM DIAGNOSIS: 16:06:28 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=0000000000000000 RCX=ffffffff8166b1a1 RDX=ffff888015495340 RSI=0000000000000000 RDI=0000000000000005 RBP=0000000000000000 RSP=ffff8880156f7a40 R8 =0000000000000001 R9 =ffffed1001d7802e R10=0000000000000000 R11=0000000000000000 R12=0000000000000001 R13=ffff888018b5404d R14=00000000000001e0 R15=dffffc0000000000 RIP=ffffffff81719e07 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 000000c000092090 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=000000c0007c9000 CR3=0000000015064000 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=00000000000000003f847ae147ae147b XMM02=00000000000000000000000000000000 XMM03=00000000000000003fde666666666666 XMM04=00000000000000003fd21c2db9efb756 XMM05=000000c0001440f0000000c0001440c0 XMM06=00000000000000003fd3333333333333 XMM07=00000000000000003fd0000000000000 XMM08=00000000000000003fe2999561e0c546 XMM09=00000000000000003fbb3311756c9098 XMM10=00000000000000003fd7c6d15d110020 XMM11=000000c000144570000000c000144540 XMM12=000000c0001445d0000000c0001445a0 XMM13=000000c000144630000000c000144600 XMM14=000000c000144690000000c000144660 XMM15=000000c000148000000000c0001446c0 info registers vcpu 1 RAX=0000000000000020 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff8283c595 RDI=ffffffff886970a0 RBP=ffffffff88697060 RSP=ffff88801af16d20 R8 =0000000000000000 R9 =ffffed10018b1046 R10=0000000000000020 R11=7369786520656874 R12=0000000000000020 R13=0000000000000010 R14=ffffffff88697060 R15=ffffffff8283c580 RIP=ffffffff8283c5ed RFL=00000002 [-------] 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 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=000000c0007c1000 CR3=0000000015064000 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