INFO: task syz-executor.1:8824 can't die for more than 143 seconds. task:syz-executor.1 state:D stack:28008 pid: 8824 ppid: 6588 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557 rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d696188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc0fcef47f R14: 00007f710d696300 R15: 0000000000022000 INFO: task syz-executor.1:8824 blocked for more than 143 seconds. Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28008 pid: 8824 ppid: 6588 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557 rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d696188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc0fcef47f R14: 00007f710d696300 R15: 0000000000022000 INFO: task syz-executor.1:8832 can't die for more than 143 seconds. task:syz-executor.1 state:D stack:29248 pid: 8832 ppid: 6588 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73 __rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489 rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520 __rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220 rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d675188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffc0fcef47f R14: 00007f710d675300 R15: 0000000000022000 INFO: task syz-executor.1:8832 blocked for more than 143 seconds. Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29248 pid: 8832 ppid: 6588 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73 __rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489 rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520 __rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220 rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d675188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffc0fcef47f R14: 00007f710d675300 R15: 0000000000022000 INFO: task syz-executor.1:8872 can't die for more than 144 seconds. task:syz-executor.1 state:D stack:29168 pid: 8872 ppid: 6588 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6093 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425 rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d654188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffc0fcef47f R14: 00007f710d654300 R15: 0000000000022000 INFO: task syz-executor.1:8872 blocked for more than 144 seconds. Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29168 pid: 8872 ppid: 6588 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4698 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5955 schedule+0xd3/0x270 kernel/sched/core.c:6034 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6093 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425 rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 RSP: 002b:00007f710d654188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffc0fcef47f R14: 00007f710d654300 R15: 0000000000022000 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:339 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2983 Comm: systemd-journal Not tainted 5.14.0-rc5-next-20210811-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:unwind_next_frame+0xd6/0x1ce0 arch/x86/kernel/unwind_orc.c:419 Code: 15 00 00 48 81 c4 a0 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 4d 8d 66 48 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 43 15 00 00 49 8b 46 48 48 89 44 24 10 49 8d 46 RSP: 0018:ffffc900016df7a0 EFLAGS: 00000a06 RAX: dffffc0000000000 RBX: 1ffff920002dbefc RCX: 0000000000000000 RDX: 1ffff920002dbf18 RSI: 0000000000000000 RDI: ffffc900016df878 RBP: 0000000000000001 R08: ffffffff8df42150 R09: 0000000000000001 R10: fffff520002dbf1a R11: 0000000000086089 R12: ffffc900016df8c0 R13: 0000000000000000 R14: ffffc900016df878 R15: ffffc900016dfc68 FS: 00007fde7e4768c0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde7b89e000 CR3: 000000001e2fa000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1681 [inline] slab_free_freelist_hook+0x7e/0x190 mm/slub.c:1706 slab_free mm/slub.c:3444 [inline] kmem_cache_free+0x8a/0x5a0 mm/slub.c:3460 putname+0xe1/0x120 fs/namei.c:259 filename_lookup+0x3df/0x5b0 fs/namei.c:2477 user_path_at include/linux/namei.h:57 [inline] do_faccessat+0x127/0x850 fs/open.c:425 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fde7d7319c7 Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffda02325b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00007ffda02355e0 RCX: 00007fde7d7319c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000559f83be09a3 RBP: 00007ffda0232700 R08: 0000559f83bd63e5 R09: 0000000000000018 R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000559f850558a0 R15: 00007ffda0232bf0