INFO: task syz-executor673:7292 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D28896 7292 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7294 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D28896 7294 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7295 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D27296 7295 7284 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7296 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D28896 7296 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7297 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D27616 7297 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7299 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D27904 7299 7282 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000007f85d R08: 000000000007f85d R09: 000000000007f85d R10: 000000000007f85d R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7303 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D27376 7303 7285 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000007f85d R08: 000000000007f85d R09: 000000000007f85d R10: 000000000007f85d R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7304 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D27408 7304 7287 0x00000004 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000007f85d R08: 000000000007f85d R09: 000000000007f85d R10: 000000000007f85d R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7305 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D28896 7305 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000007f85b R08: 000000000007f85b R09: 000000000007f85b R10: 000000000007f85b R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor673:7306 blocked for more than 140 seconds. Not tainted 5.0.0-rc7-next-20190222 #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor673 D28896 7306 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2877 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3518 schedule+0x92/0x180 kernel/sched/core.c:3562 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:582 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:611 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:763 [inline] process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ima_file_check+0xc5/0x110 security/integrity/ima/ima_main.c:393 do_last fs/namei.c:3420 [inline] path_openat+0x1142/0x46e0 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3fe/0x5d0 fs/open.c:1063 ksys_open include/linux/syscalls.h:1373 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x442269 Code: Bad RIP value. RSP: 002b:00007ffef5f6d178 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442269 RDX: 0000000000442269 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000007f860 R08: 000000000007f860 R09: 000000000007f860 R10: 000000000007f860 R11: 0000000000000246 R12: 0000000000403100 R13: 0000000000403190 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1043: #0: 00000000a924e17b (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4382 1 lock held by rsyslogd/7165: #0: 00000000bb53bb71 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/7256: #0: 000000005f7b0340 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000672e52a5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7257: #0: 000000003e228600 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000057fb3e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7258: #0: 00000000ae36e667 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f3a13694 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7259: #0: 00000000dc7ab3e1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000042de2f18 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7260: #0: 000000003e62ceb1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000041d5213 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7261: #0: 00000000868acbfe (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000890a99ba (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7262: #0: 0000000008671c21 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a1c50e89 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by syz-executor673/7288: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: vfs_write+0x429/0x580 fs/read_write.c:548 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_trylock include/linux/fs.h:783 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: ext4_file_write_iter+0x257/0x11a0 fs/ext4/file.c:232 2 locks held by syz-executor673/7292: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7294: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7295: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7296: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7297: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7299: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7303: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7304: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7305: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7306: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7307: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7309: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7308: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7310: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 2 locks held by syz-executor673/7311: #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1612 [inline] #0: 00000000678db1d7 (sb_writers#3){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:358 #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_lock include/linux/fs.h:763 [inline] #1: 000000004abe7843 (&sb->s_type->i_mutex_key#10){+.+.}, at: process_measurement+0x9ae/0x1570 security/integrity/ima/ima_main.c:207 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1043 Comm: khungtaskd Not tainted 5.0.0-rc7-next-20190222 #41 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:204 [inline] watchdog+0x9b2/0xeb0 kernel/hung_task.c:288 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: