Bluetooth: hci3: command 0x041b tx timeout Bluetooth: hci3: command 0x040f tx timeout Bluetooth: hci3: command 0x0419 tx timeout GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog INFO: task kworker/0:2:3687 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D26024 3687 2 0x80000000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 linkwatch_event+0xb/0x60 net/core/link_watch.c:236 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 3 locks held by kworker/0:1/14: #0: 00000000b28f273a ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000b63cbb81 ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 0000000099c55f72 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476 1 lock held by khungtaskd/1571: #0: 00000000cc347a32 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/0:2/3687: #0: 00000000c42f8477 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004dc414f4 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 0000000099c55f72 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 1 lock held by in:imklog/7794: #0: 00000000c56d6244 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.4/8144: 2 locks held by syz-executor.3/8145: 1 lock held by syz-executor.2/8146: #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 2 locks held by kworker/u4:8/9515: 2 locks held by syz-executor.1/20292: 2 locks held by syz-executor.1/20612: 2 locks held by syz-executor.5/20624: 1 lock held by syz-executor.1/20650: #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by syz-executor.1/20670: #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 0000000099c55f72 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 20624 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:__sanitizer_cov_trace_cmp1+0x4/0x10 kernel/kcov.c:150 Code: 00 00 4c 39 c6 72 1b 48 83 c7 01 4e 89 54 00 e0 4e 89 4c 00 e8 4a 89 54 00 f0 4a 89 4c d8 20 48 89 38 c3 0f 1f 00 48 8b 0c 24 <40> 0f b6 d6 40 0f b6 f7 31 ff eb 80 48 8b 0c 24 0f b7 d6 0f b7 f7 RSP: 0018:ffff8880ba007d88 EFLAGS: 00000246 RAX: 0000000080000101 RBX: 00000089b4470227 RCX: ffffffff81541d80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8c665018 R09: 0000000000000000 R10: 0000000000000001 R11: ffffffff8c66501b R12: 0000000000000001 R13: 0000000000000fa0 R14: ffff8880946856d0 R15: dffffc0000000000 FS: 00007fd97002c700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe8e5549998 CR3: 000000003bd6a000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_start_range_ns+0x80/0xd60 kernel/time/hrtimer.c:1178 hrtimer_start include/linux/hrtimer.h:398 [inline] bcm_tx_start_timer+0x112/0x1b0 net/can/bcm.c:384 bcm_tx_timeout_tsklet+0x13c/0x3a0 net/can/bcm.c:416 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] get_next_corpse net/netfilter/nf_conntrack_core.c:1907 [inline] nf_ct_iterate_cleanup+0x239/0x520 net/netfilter/nf_conntrack_core.c:1930 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2015 [inline] nf_ct_iterate_cleanup_net+0x113/0x170 net/netfilter/nf_conntrack_core.c:2000 masq_device_event+0xae/0xe0 net/ipv6/netfilter/nf_nat_masquerade_ipv6.c:77 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] dev_close_many+0x323/0x670 net/core/dev.c:1514 dev_close net/core/dev.c:1536 [inline] dev_close+0x179/0x220 net/core/dev.c:1530 bond_enslave+0x2038/0x5250 drivers/net/bonding/bond_main.c:1829 do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2321 rtnl_newlink+0x1279/0x15c0 net/core/rtnetlink.c:3170 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4782 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd9716da5f9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd97002c168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd9717fb050 RCX: 00007fd9716da5f9 RDX: 0000000000004000 RSI: 0000000020000240 RDI: 0000000000000006 RBP: 00007fd9717357b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2dfd8c3f R14: 00007fd97002c300 R15: 0000000000022000 Bluetooth: hci7: command 0x0406 tx timeout