INFO: task syz-executor.0:23257 blocked for more than 143 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28560 23257 8877 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f2617ddb9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2617ddba58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f2617ddba00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2617ddba40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.0:23264 blocked for more than 143 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27808 23264 8877 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f2617dba9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2617dbaa58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f2617dbaa00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2617dbaa40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.1:23259 blocked for more than 144 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28560 23259 8883 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f99a9a469c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f99a9a46a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f99a9a46a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f99a9a46a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.1:23262 blocked for more than 144 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27808 23262 8883 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f99a9a259c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f99a9a25a58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f99a9a25a00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f99a9a25a40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.2:23252 blocked for more than 145 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28560 23252 8874 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f15523cb9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f15523cba58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f15523cba00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f15523cba40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.2:23263 blocked for more than 145 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27808 23263 8874 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f15523aa9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f15523aaa58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f15523aaa00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f15523aaa40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.4:23255 blocked for more than 146 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28560 23255 8880 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f965285e9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f965285ea58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f965285ea00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f965285ea40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.4:23261 blocked for more than 146 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27808 23261 8880 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f965283d9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f965283da58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f965283da00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f965283da40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.5:23260 blocked for more than 147 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28560 23260 8881 0x00004004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f656000c9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f656000ca58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f656000ca00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000293 R12: 00007f656000ca40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff INFO: task syz-executor.5:23265 blocked for more than 147 seconds. Not tainted 5.2.0-rc4+ #26 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27808 23265 8881 0x00000004 Call Trace: context_switch kernel/sched/core.c:2818 [inline] __schedule+0x7cb/0x1560 kernel/sched/core.c:3445 schedule+0xa8/0x260 kernel/sched/core.c:3509 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3568 __mutex_lock_common kernel/locking/mutex.c:1003 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2482 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1333 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1922 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:665 ___sys_sendmsg+0x803/0x920 net/socket.c:2286 __sys_sendmsg+0x105/0x1d0 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2331 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413081 Code: 00 89 95 28 01 00 00 0f b6 15 97 67 24 00 88 95 34 01 00 00 48 8b 15 8e 67 24 00 89 95 2c 01 00 00 8b 15 7a 67 24 00 89 95 30 <01> 00 00 8b 15 fe a5 24 00 88 95 35 01 00 00 0f 84 d4 01 00 00 45 RSP: 002b:00007f655ffeb9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f655ffeba58 RCX: 0000000000413081 RDX: 0000000000000000 RSI: 00007f655ffeba00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 000000000000000b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f655ffeba40 R13: 00000000004cfad8 R14: 00000000004de7f0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1042: #0: 00000000de7dc935 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5149 1 lock held by rsyslogd/8738: #0: 000000006b0af8c7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/8828: #0: 0000000084846bee (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000000a5718ae (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8829: #0: 00000000d4ec7ca9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000017d1b36 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8830: #0: 0000000010346515 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000ffd985cb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8831: #0: 00000000c5089f06 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000036785007 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8832: #0: 00000000da5553b7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a3494bea (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8833: #0: 0000000024cf7f09 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000877d11d4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/8834: #0: 0000000074b2fa28 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c3e7408f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 4 locks held by syz-executor.3/23247: 2 locks held by syz-executor.0/23257: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.0/23264: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.1/23259: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.1/23262: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.2/23252: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.2/23263: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.4/23255: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.4/23261: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.5/23260: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 2 locks held by syz-executor.5/23265: #0: 000000008f941f1c (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:664 #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d18a0c70 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x16c net/netlink/genetlink.c:652 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1042 Comm: khungtaskd Not tainted 5.2.0-rc4+ #26 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9b7/0xec0 kernel/hung_task.c:289 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8891 Comm: kworker/u4:0 Not tainted 5.2.0-rc4+ #26 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x2a/0x60 kernel/rcu/update.c:237 Code: 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 65 48 8b 1c 25 c0 fd 01 00 48 8d bb 7c 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 10 8b 93 7c 08 00 RSP: 0018:ffff88808f54fcb0 EFLAGS: 00000a03 RAX: dffffc0000000000 RBX: ffff8880a4a6e240 RCX: 1ffffffff1301786 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a4a6eabc RBP: ffff88808f54fcb8 R08: 00000000987afcd0 R09: ffff8880a4a6eb30 R10: ffff8880a4a6eb10 R11: ffff8880a4a6e240 R12: 0000000000000001 R13: 0000000000000286 R14: ffff8880819832f0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000095e72000 CR4: 00000000001406f0 Call Trace: debug_lockdep_rcu_enabled+0x71/0xa0 kernel/rcu/update.c:236 rcu_read_lock include/linux/rcupdate.h:594 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:407 [inline] batadv_nc_worker+0x11c/0x760 net/batman-adv/network-coding.c:718 process_one_work+0x989/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352