program: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) (async) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_mount_image$hfsplus(&(0x7f0000000100), &(0x7f0000002900)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x2000010, &(0x7f00000022c0)=ANY=[], 0x1, 0x6d0, &(0x7f0000001340)="$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") mknod$loop(&(0x7f0000000000)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x0, 0x1) creat(&(0x7f0000000e00)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x0) open(&(0x7f0000000000)='./file0\x00', 0x143042, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='blkio.throttle.io_serviced_recursive\x00', 0x275a, 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) (async) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) chdir(&(0x7f0000000140)='./bus\x00') (async) chdir(&(0x7f0000000140)='./bus\x00') openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file0\x00', 0xc4042, 0x0) (async) openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file0\x00', 0xc4042, 0x0) r1 = openat$dir(0xffffffffffffff9c, &(0x7f0000002440)='./file0\x00', 0x0, 0x0) fdatasync(r1) r2 = syz_genetlink_get_family_id$nl802154(&(0x7f0000000040), 0xffffffffffffffff) ioctl$sock_SIOCGIFINDEX_802154(r0, 0x8933, &(0x7f0000000180)={'wpan1\x00'}) (async) ioctl$sock_SIOCGIFINDEX_802154(r0, 0x8933, &(0x7f0000000180)={'wpan1\x00', 0x0}) sendmsg$NL802154_CMD_NEW_SEC_LEVEL(r0, &(0x7f0000000300)={&(0x7f0000000080)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000200)={&(0x7f0000000140)={0x1c, r2, 0x8, 0x70bd27, 0x25dfdbff, {}, [@NL802154_ATTR_IFINDEX={0x8, 0x3, r3}]}, 0x1c}, 0x1, 0x0, 0x0, 0x20004804}, 0x20000010) getpid() (async) getpid() r4 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$IEEE802154_ADD_IFACE(r4, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000000)={0x28, 0x0, 0x1, 0x4, 0x0, {}, [@IEEE802154_ATTR_DEV_TYPE={0x5, 0x20, 0x1}, @IEEE802154_ATTR_PHY_NAME={0x9, 0x1f, 'phy1\x00'}]}, 0x28}, 0x1, 0x0, 0x0, 0x4000090}, 0x0) r5 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) ioctl$sock_bt_hci(r5, 0x400448cb, 0x0) (async) ioctl$sock_bt_hci(r5, 0x400448cb, 0x0) syz_emit_vhci(&(0x7f0000000540)=@HCI_EVENT_PKT={0x4, @hci_ev_le_meta={{0x3e, 0xb}, @hci_ev_le_remote_conn_param_req={{}, {0xc8, 0x9216, 0x48c2, 0x40, 0x6}}}}, 0xe) (async) syz_emit_vhci(&(0x7f0000000540)=@HCI_EVENT_PKT={0x4, @hci_ev_le_meta={{0x3e, 0xb}, @hci_ev_le_remote_conn_param_req={{}, {0xc8, 0x9216, 0x48c2, 0x40, 0x6}}}}, 0xe) sendmsg$NL802154_CMD_SET_WPAN_PHY_NETNS(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000002c0)={0x24, r2, 0x1, 0x70bd27, 0x0, {}, [@NL802154_ATTR_IFINDEX={0x8, 0x3, r3}, @NL802154_ATTR_IFINDEX={0x8, 0x3, r3}]}, 0x24}}, 0x0) mprotect(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x6) r6 = socket$kcm(0x2, 0xa, 0x2) ioctl$SIOCSIFHWADDR(r6, 0x8914, &(0x7f0000000180)={'syzkaller1\x00', @link_local}) [ 85.974561][ T5331] loop0: detected capacity change from 0 to 1024 [ 85.982681][ T5310] Bluetooth: hci0: command tx timeout [ 86.201531][ T5331] hfsplus: xattr searching failed [ 86.207694][ T5331] hfsplus: xattr searching failed [ 86.228179][ T5332] hfsplus: xattr searching failed [ 86.236815][ T5336] hfsplus: xattr searching failed [ 86.241012][ T5331] hfsplus: xattr searching failed [ 86.248221][ T25] audit: type=1800 audit(1749820045.791:2): pid=5332 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file0" dev="loop0" ino=8 res=0 errno=0 [ 86.265472][ T5336] [ 86.266880][ T5336] ====================================================== [ 86.269907][ T5336] WARNING: possible circular locking dependency detected [ 86.272793][ T5336] 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 Not tainted [ 86.275919][ T5336] ------------------------------------------------------ [ 86.278891][ T5336] syz.0.0/5336 is trying to acquire lock: [ 86.281439][ T5336] ffff88803f0ec040 ((work_completion)(&(&conn->info_timer)->work)){+.+.}-{0:0}, at: __flush_work+0xd2/0xbc0 [ 86.286530][ T5336] [ 86.286530][ T5336] but task is already holding lock: [ 86.289651][ T5336] ffff88803f0ec338 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x70/0x680 [ 86.293483][ T5336] [ 86.293483][ T5336] which lock already depends on the new lock. [ 86.293483][ T5336] [ 86.298113][ T5336] [ 86.298113][ T5336] the existing dependency chain (in reverse order) is: [ 86.302280][ T5336] [ 86.302280][ T5336] -> #1 (&conn->lock#2){+.+.}-{4:4}: [ 86.305292][ T5336] lock_acquire+0x120/0x360 [ 86.307338][ T5336] __mutex_lock+0x182/0xe80 [ 86.309745][ T5336] l2cap_info_timeout+0x60/0xa0 [ 86.312403][ T5336] process_scheduled_works+0xae1/0x17b0 [ 86.315462][ T5336] worker_thread+0x8a0/0xda0 [ 86.318075][ T5336] kthread+0x70e/0x8a0 [ 86.320086][ T5336] ret_from_fork+0x3fc/0x770 [ 86.322383][ T5336] ret_from_fork_asm+0x1a/0x30 [ 86.324566][ T5336] [ 86.324566][ T5336] -> #0 ((work_completion)(&(&conn->info_timer)->work)){+.+.}-{0:0}: [ 86.328775][ T5336] validate_chain+0xb9b/0x2140 [ 86.331431][ T5336] __lock_acquire+0xab9/0xd20 [ 86.334378][ T5336] lock_acquire+0x120/0x360 [ 86.336748][ T5336] __flush_work+0x6b8/0xbc0 [ 86.338865][ T5336] __cancel_work_sync+0xbe/0x110 [ 86.341096][ T5336] l2cap_conn_del+0x4f0/0x680 [ 86.343321][ T5336] hci_conn_hash_flush+0x10d/0x230 [ 86.345662][ T5336] hci_dev_reset+0x3e0/0x5c0 [ 86.347936][ T5336] sock_do_ioctl+0xd9/0x300 [ 86.350613][ T5336] sock_ioctl+0x576/0x790 [ 86.353101][ T5336] __se_sys_ioctl+0xf9/0x170 [ 86.355417][ T5336] do_syscall_64+0xfa/0x3b0 [ 86.357525][ T5336] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.360065][ T5336] [ 86.360065][ T5336] other info that might help us debug this: [ 86.360065][ T5336] [ 86.364116][ T5336] Possible unsafe locking scenario: [ 86.364116][ T5336] [ 86.367660][ T5336] CPU0 CPU1 [ 86.370507][ T5336] ---- ---- [ 86.372716][ T5336] lock(&conn->lock#2); [ 86.374517][ T5336] lock((work_completion)(&(&conn->info_timer)->work)); [ 86.378482][ T5336] lock(&conn->lock#2); [ 86.381270][ T5336] lock((work_completion)(&(&conn->info_timer)->work)); [ 86.384307][ T5336] [ 86.384307][ T5336] *** DEADLOCK *** [ 86.384307][ T5336] [ 86.387786][ T5336] 5 locks held by syz.0.0/5336: [ 86.389985][ T5336] #0: ffff888035750d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_reset+0x139/0x5c0 [ 86.394258][ T5336] #1: ffff888035750078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_reset+0x1c9/0x5c0 [ 86.398149][ T5336] #2: ffffffff8f6779e8 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_hash_flush+0xa1/0x230 [ 86.402510][ T5336] #3: ffff88803f0ec338 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x70/0x680 [ 86.406359][ T5336] #4: ffffffff8e13eda0 (rcu_read_lock){....}-{1:3}, at: __flush_work+0xd2/0xbc0 [ 86.410438][ T5336] [ 86.410438][ T5336] stack backtrace: [ 86.413357][ T5336] CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) [ 86.413398][ T5336] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 86.413407][ T5336] Call Trace: [ 86.413415][ T5336] [ 86.413421][ T5336] dump_stack_lvl+0x189/0x250 [ 86.413445][ T5336] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.413461][ T5336] ? __pfx__printk+0x10/0x10 [ 86.413473][ T5336] ? print_lock_name+0xde/0x100 [ 86.413485][ T5336] print_circular_bug+0x2ee/0x310 [ 86.413498][ T5336] check_noncircular+0x134/0x160 [ 86.413510][ T5336] validate_chain+0xb9b/0x2140 [ 86.413520][ T5336] ? do_raw_spin_lock+0x121/0x290 [ 86.413533][ T5336] ? look_up_lock_class+0x74/0x170 [ 86.413550][ T5336] ? register_lock_class+0x51/0x320 [ 86.413566][ T5336] __lock_acquire+0xab9/0xd20 [ 86.413581][ T5336] ? __flush_work+0xd2/0xbc0 [ 86.413591][ T5336] lock_acquire+0x120/0x360 [ 86.413605][ T5336] ? __flush_work+0xd2/0xbc0 [ 86.413637][ T5336] ? _raw_spin_unlock_irq+0x23/0x50 [ 86.413652][ T5336] ? __flush_work+0xd2/0xbc0 [ 86.413662][ T5336] __flush_work+0x6b8/0xbc0 [ 86.413672][ T5336] ? __flush_work+0xd2/0xbc0 [ 86.413682][ T5336] ? __flush_work+0xd2/0xbc0 [ 86.413693][ T5336] ? __pfx___flush_work+0x10/0x10 [ 86.413703][ T5336] ? __pfx_wq_barrier_func+0x10/0x10 [ 86.413721][ T5336] ? __pfx___cancel_work+0x10/0x10 [ 86.413732][ T5336] ? __pfx___mutex_lock+0x10/0x10 [ 86.413748][ T5336] ? hci_dev_reset+0x1c9/0x5c0 [ 86.413763][ T5336] __cancel_work_sync+0xbe/0x110 [ 86.413774][ T5336] l2cap_conn_del+0x4f0/0x680 [ 86.413791][ T5336] ? __pfx_l2cap_disconn_cfm+0x10/0x10 [ 86.413803][ T5336] hci_conn_hash_flush+0x10d/0x230 [ 86.413818][ T5336] hci_dev_reset+0x3e0/0x5c0 [ 86.413832][ T5336] sock_do_ioctl+0xd9/0x300 [ 86.413849][ T5336] ? __pfx_sock_do_ioctl+0x10/0x10 [ 86.413863][ T5336] ? __lock_acquire+0xab9/0xd20 [ 86.413880][ T5336] sock_ioctl+0x576/0x790 [ 86.413895][ T5336] ? __pfx_sock_ioctl+0x10/0x10 [ 86.413909][ T5336] ? __fget_files+0x2a/0x420 [ 86.413923][ T5336] ? __fget_files+0x3a0/0x420 [ 86.413933][ T5336] ? __fget_files+0x2a/0x420 [ 86.413944][ T5336] ? bpf_lsm_file_ioctl+0x9/0x20 [ 86.413968][ T5336] ? __pfx_sock_ioctl+0x10/0x10 [ 86.413982][ T5336] __se_sys_ioctl+0xf9/0x170 [ 86.413998][ T5336] do_syscall_64+0xfa/0x3b0 [ 86.414009][ T5336] ? lockdep_hardirqs_on+0x9c/0x150 [ 86.414024][ T5336] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.414034][ T5336] ? clear_bhb_loop+0x60/0xb0 [ 86.414046][ T5336] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.414057][ T5336] RIP: 0033:0x7fa400b8e929 [ 86.414069][ T5336] 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 [ 86.414079][ T5336] RSP: 002b:00007fa4019c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 86.414092][ T5336] RAX: ffffffffffffffda RBX: 00007fa400db6160 RCX: 00007fa400b8e929 [ 86.414100][ T5336] RDX: 0000000000000000 RSI: 00000000400448cb RDI: 000000000000000e [ 86.414107][ T5336] RBP: 00007fa400c10b39 R08: 0000000000000000 R09: 0000000000000000 [ 86.414114][ T5336] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.414121][ T5336] R13: 0000000000000000 R14: 00007fa400db6160 R15: 00007ffd0dc03528 [ 86.414131][ T5336] [ 86.558954][ T25] audit: type=1800 audit(1749820045.801:3): pid=5336 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file0" dev="loop0" ino=8 res=0 errno=0 [ 86.568332][ T25] audit: type=1804 audit(1749820045.801:4): pid=5331 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=invalid_pcr cause=open_writers comm="syz.0.0" name="/newroot/0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bus/file0" dev="loop0" ino=8 res=1 errno=0 [ 91.863044][ T10] cfg80211: failed to load regulatory.db