Bluetooth: hci8: command 0x0409 tx timeout Bluetooth: hci8: command 0x041b tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci8: command 0x040f tx timeout Bluetooth: hci8: command 0x0419 tx timeout INFO: task syz-executor.3:26892 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. syz-executor.3 D29592 26892 19138 0x00000004 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 iterate_supers+0xdb/0x290 fs/super.c:631 ksys_sync+0x86/0x150 fs/sync.c:113 __ia32_sys_sync+0xa/0x10 fs/sync.c:124 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd4961370f9 Code: Bad RIP value. RSP: 002b:00007fd4946a9168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fd496256f80 RCX: 00007fd4961370f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd496192ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe86b669f R14: 00007fd4946a9300 R15: 0000000000022000 INFO: task syz-executor.3:26901 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. syz-executor.3 D25368 26901 19138 0x00000004 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 iterate_supers+0xdb/0x290 fs/super.c:631 ksys_sync+0x86/0x150 fs/sync.c:113 __ia32_sys_sync+0xa/0x10 fs/sync.c:124 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd4961370f9 Code: Bad RIP value. RSP: 002b:00007fd494688168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fd496257050 RCX: 00007fd4961370f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd496192ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe86b669f R14: 00007fd494688300 R15: 0000000000022000 INFO: task syz-executor.3:26950 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. syz-executor.3 D24840 26950 19138 0x00000004 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 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 iterate_supers+0xdb/0x290 fs/super.c:631 ksys_sync+0x86/0x150 fs/sync.c:113 __ia32_sys_sync+0xa/0x10 fs/sync.c:124 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd4961370f9 Code: Bad RIP value. RSP: 002b:00007fd48d267168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fd496257120 RCX: 00007fd4961370f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fd496192ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe86b669f R14: 00007fd48d267300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 0000000042a9c7ef (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by syz-executor.5/26173: #0: 000000006383d3ff (&type->s_umount_key#86/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 000000006383d3ff (&type->s_umount_key#86/1){+.+.}, at: sget_userns+0x20b/0xcd0 fs/super.c:519 1 lock held by syz-executor.3/26892: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/26901: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/26950: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27245: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27246: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27249: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27544: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27547: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 1 lock held by syz-executor.3/27548: #0: 000000006383d3ff (&type->s_umount_key#90){++++}, at: iterate_supers+0xdb/0x290 fs/super.c:631 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9491 Comm: kworker/u4:8 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: phy37 ieee80211_iface_work RIP: 0010:__do_cache_alloc mm/slab.c:3360 [inline] RIP: 0010:slab_alloc mm/slab.c:3389 [inline] RIP: 0010:__do_kmalloc mm/slab.c:3725 [inline] RIP: 0010:__kmalloc+0x1f9/0x3c0 mm/slab.c:3736 Code: c0 4c 03 24 c5 00 af cf 89 41 8b 14 24 85 d2 0f 84 74 01 00 00 41 c7 44 24 0c 01 00 00 00 83 ea 01 41 89 14 24 4d 8b 64 d4 10 <4d> 85 e4 0f 85 ee fe ff ff 65 8b 15 d7 68 6a 7e 89 de 4c 89 ff e8 RSP: 0018:ffff88804b557408 EFLAGS: 00000006 RAX: 0000000000000001 RBX: 0000000000488020 RCX: ffffffff83771e8f RDX: 000000000000003c RSI: ffffffff83771e31 RDI: 0000000000000007 RBP: 0000000000000048 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880a532c880 R13: 0000000000488020 R14: ffff88813bff04c0 R15: ffff88813bff04c0 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda84b28000 CR3: 00000000a0c75000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmalloc include/linux/slab.h:520 [inline] kzalloc include/linux/slab.h:709 [inline] cfg80211_inform_bss_frame_data+0x200/0xeb0 net/wireless/scan.c:1255 ieee80211_bss_info_update+0x42d/0x1800 net/mac80211/scan.c:105 ieee80211_rx_bss_info net/mac80211/ibss.c:1125 [inline] ieee80211_rx_mgmt_probe_beacon+0xb4f/0x15c0 net/mac80211/ibss.c:1607 ieee80211_ibss_rx_queued_mgmt+0xe27/0x18b0 net/mac80211/ibss.c:1634 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1341 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