INFO: task syz-executor.3:26434 can't die for more than 143 seconds. task:syz-executor.3 state:D stack:29296 pid:26434 ppid: 6572 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007fbafce2b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007fffa1a7c33f R14: 00007fbafce2b300 R15: 0000000000022000 INFO: task syz-executor.3:26434 blocked for more than 143 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29296 pid:26434 ppid: 6572 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007fbafce2b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007fffa1a7c33f R14: 00007fbafce2b300 R15: 0000000000022000 INFO: task syz-executor.2:26430 can't die for more than 144 seconds. task:syz-executor.2 state:D stack:29768 pid:26430 ppid: 6570 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 __sys_sendto+0x21c/0x320 net/socket.c:2030 __do_sys_sendto net/socket.c:2042 [inline] __se_sys_sendto net/socket.c:2038 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2038 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: 0033:0x41957c RSP: 002b:00007f7b8cb03020 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f7b8cb03110 RCX: 000000000041957c RDX: 0000000000000028 RSI: 00007f7b8cb03160 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f7b8cb03074 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7b8cb030c8 R13: 00007f7b8cb03160 R14: 0000000000000004 R15: 0000000000000000 INFO: task syz-executor.2:26430 blocked for more than 144 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29768 pid:26430 ppid: 6570 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 __sys_sendto+0x21c/0x320 net/socket.c:2030 __do_sys_sendto net/socket.c:2042 [inline] __se_sys_sendto net/socket.c:2038 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2038 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: 0033:0x41957c RSP: 002b:00007f7b8cb03020 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f7b8cb03110 RCX: 000000000041957c RDX: 0000000000000028 RSI: 00007f7b8cb03160 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f7b8cb03074 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7b8cb030c8 R13: 00007f7b8cb03160 R14: 0000000000000004 R15: 0000000000000000 INFO: task syz-executor.2:26441 can't die for more than 145 seconds. task:syz-executor.2 state:D stack:29296 pid:26441 ppid: 6570 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f7b8cae3188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffca7b4db1f R14: 00007f7b8cae3300 R15: 0000000000022000 INFO: task syz-executor.2:26441 blocked for more than 145 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29296 pid:26441 ppid: 6570 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f7b8cae3188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffca7b4db1f R14: 00007f7b8cae3300 R15: 0000000000022000 INFO: task syz-executor.0:26383 can't die for more than 145 seconds. task:syz-executor.0 state:D stack:28312 pid:26383 ppid: 20380 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f481968c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe41ceb92f R14: 00007f481968c300 R15: 0000000000022000 INFO: task syz-executor.0:26383 blocked for more than 146 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28312 pid:26383 ppid: 20380 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f481968c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe41ceb92f R14: 00007f481968c300 R15: 0000000000022000 INFO: task syz-executor.0:26420 can't die for more than 146 seconds. task:syz-executor.0 state:D stack:26008 pid:26420 ppid: 20380 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 refcount_dec_and_mutex_lock lib/refcount.c:118 [inline] refcount_dec_and_mutex_lock+0x50/0x140 lib/refcount.c:113 nbd_put drivers/block/nbd.c:260 [inline] nbd_genl_connect+0xd69/0x1820 drivers/block/nbd.c:1999 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f481966b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffe41ceb92f R14: 00007f481966b300 R15: 0000000000022000 INFO: task syz-executor.0:26420 blocked for more than 147 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26008 pid:26420 ppid: 20380 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 refcount_dec_and_mutex_lock lib/refcount.c:118 [inline] refcount_dec_and_mutex_lock+0x50/0x140 lib/refcount.c:113 nbd_put drivers/block/nbd.c:260 [inline] nbd_genl_connect+0xd69/0x1820 drivers/block/nbd.c:1999 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2486 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:00007f481966b188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffe41ceb92f R14: 00007f481966b300 R15: 0000000000022000 INFO: task syz-executor.0:26439 can't die for more than 147 seconds. task:syz-executor.0 state:D stack:29768 pid:26439 ppid: 20380 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 __sys_sendto+0x21c/0x320 net/socket.c:2030 __do_sys_sendto net/socket.c:2042 [inline] __se_sys_sendto net/socket.c:2038 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2038 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: 0033:0x41957c RSP: 002b:00007f4819649020 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f4819649110 RCX: 000000000041957c RDX: 0000000000000028 RSI: 00007f4819649160 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f4819649074 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f48196490c8 R13: 00007f4819649160 R14: 0000000000000004 R15: 0000000000000000 INFO: task syz-executor.0:26439 blocked for more than 148 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29768 pid:26439 ppid: 20380 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 __sys_sendto+0x21c/0x320 net/socket.c:2030 __do_sys_sendto net/socket.c:2042 [inline] __se_sys_sendto net/socket.c:2038 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2038 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: 0033:0x41957c RSP: 002b:00007f4819649020 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f4819649110 RCX: 000000000041957c RDX: 0000000000000028 RSI: 00007f4819649160 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f4819649074 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f48196490c8 R13: 00007f4819649160 R14: 0000000000000004 R15: 0000000000000000 INFO: task systemd-udevd:26428 blocked for more than 148 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:28040 pid:26428 ppid: 2986 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 refcount_dec_and_mutex_lock lib/refcount.c:118 [inline] refcount_dec_and_mutex_lock+0x50/0x140 lib/refcount.c:113 nbd_put drivers/block/nbd.c:260 [inline] nbd_release+0x126/0x1a0 drivers/block/nbd.c:1526 blkdev_put_whole fs/block_dev.c:1096 [inline] blkdev_put+0x2fb/0x9e0 fs/block_dev.c:1387 blkdev_close+0x8c/0xb0 fs/block_dev.c:1397 __fput+0x288/0x9f0 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0e79996270 RSP: 002b:00007ffc4b08d768 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f0e79996270 RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f0e7a850710 R08: 0000000000000045 R09: 0000000000000018 R10: 000056034e98a418 R11: 0000000000000246 R12: 0000000000000000 R13: 000056034e98b6a0 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:26445 blocked for more than 148 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:28584 pid:26445 ppid: 2986 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 del_gendisk+0x84/0x6f0 block/genhd.c:597 nbd_dev_remove drivers/block/nbd.c:241 [inline] nbd_put.part.0+0x82/0x160 drivers/block/nbd.c:263 nbd_put drivers/block/nbd.c:1527 [inline] nbd_release+0x14d/0x1a0 drivers/block/nbd.c:1526 blkdev_put_whole fs/block_dev.c:1096 [inline] blkdev_put+0x2fb/0x9e0 fs/block_dev.c:1387 blkdev_close+0x8c/0xb0 fs/block_dev.c:1397 __fput+0x288/0x9f0 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0e79996270 RSP: 002b:00007ffc4b08d768 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f0e79996270 RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f0e7a850710 R08: 0000000000000045 R09: 0000000000000018 R10: 000056034e98a418 R11: 0000000000000246 R12: 0000000000000000 R13: 000056034e97bc60 R14: 0000000000000003 R15: 000000000000000e INFO: task systemd-udevd:26462 blocked for more than 148 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:systemd-udevd state:D stack:28440 pid:26462 ppid: 2986 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 nbd_open+0x7d/0x8a0 drivers/block/nbd.c:1479 blkdev_get_whole+0x99/0x2a0 fs/block_dev.c:1073 blkdev_get_by_dev.part.0+0x354/0xb60 fs/block_dev.c:1228 blkdev_get_by_dev fs/block_dev.c:1317 [inline] blkdev_open+0x295/0x300 fs/block_dev.c:1323 do_dentry_open+0x4c8/0x11d0 fs/open.c:826 do_open fs/namei.c:3405 [inline] path_openat+0x1c9a/0x2880 fs/namei.c:3538 do_filp_open+0x1aa/0x400 fs/namei.c:3565 do_sys_openat2+0x16d/0x4d0 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_open fs/open.c:1228 [inline] __se_sys_open fs/open.c:1224 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1224 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: 0033:0x7f0e79996840 RSP: 002b:00007ffc4b08d198 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000056034e98ba20 RCX: 00007f0e79996840 RDX: 000056034daa4fe3 RSI: 00000000000a0800 RDI: 000056034e9878d0 RBP: 00007ffc4b08d310 R08: 000056034daa4670 R09: 0000000000000010 R10: 000056034daa4d0c R11: 0000000000000246 R12: 00007ffc4b08d260 R13: 000056034e9879d0 R14: 0000000000000003 R15: 000000000000000e INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10451 Comm: kworker/u4:6 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy7 ieee80211_iface_work RIP: 0010:ieee80211_channel_to_freq_khz+0x0/0x190 net/wireless/util.c:76 Code: f9 e9 88 f2 ff ff 89 14 24 e8 ec 4b 57 f9 8b 14 24 e9 05 fd ff ff be 02 00 00 00 e8 1a 4c 57 f9 e9 d1 fc ff ff cc cc cc cc cc <41> 55 41 54 45 31 e4 55 89 f5 53 89 fb e8 8e 95 11 f9 31 ff 89 de RSP: 0018:ffffc9000473efc0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff888088d334d0 RCX: 0000000000000000 RDX: ffff88808c651c80 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff88667905 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000028 R14: ffff888068bb1c86 R15: ffff888088d30580 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1af802ea90 CR3: 000000000b68e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cfg80211_get_bss_channel+0x18c/0x3b0 net/wireless/scan.c:1838 cfg80211_inform_single_bss_frame_data+0x260/0xee0 net/wireless/scan.c:2358 cfg80211_inform_bss_frame_data+0xa7/0xb10 net/wireless/scan.c:2444 ieee80211_bss_info_update+0x374/0xb70 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1126 [inline] ieee80211_rx_mgmt_probe_beacon+0xcc6/0x17c0 net/mac80211/ibss.c:1615 ieee80211_ibss_rx_queued_mgmt+0xd30/0x1610 net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1426 [inline] ieee80211_iface_work+0x7f7/0xa40 net/mac80211/iface.c:1462 process_one_work+0x98d/0x1630 kernel/workqueue.c:2275 worker_thread+0x658/0x11f0 kernel/workqueue.c:2421 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: f9 stc 1: e9 88 f2 ff ff jmpq 0xfffff28e 6: 89 14 24 mov %edx,(%rsp) 9: e8 ec 4b 57 f9 callq 0xf9574bfa e: 8b 14 24 mov (%rsp),%edx 11: e9 05 fd ff ff jmpq 0xfffffd1b 16: be 02 00 00 00 mov $0x2,%esi 1b: e8 1a 4c 57 f9 callq 0xf9574c3a 20: e9 d1 fc ff ff jmpq 0xfffffcf6 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: cc int3 2a: 41 55 push %r13 <-- trapping instruction 2c: 41 54 push %r12 2e: 45 31 e4 xor %r12d,%r12d 31: 55 push %rbp 32: 89 f5 mov %esi,%ebp 34: 53 push %rbx 35: 89 fb mov %edi,%ebx 37: e8 8e 95 11 f9 callq 0xf91195ca 3c: 31 ff xor %edi,%edi 3e: 89 de mov %ebx,%esi