RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00007f34f085eca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00007ffcbb670f7f R14: 00007f34f085f9c0 R15: 000000000119c034 INFO: task syz-executor.2:22164 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28920 22164 8000 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f3a850a4c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000140 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffdaf18566f R14: 00007f3a850a59c0 R15: 000000000119bf8c INFO: task syz-executor.2:22214 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28920 22214 8000 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f3a85062c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000140 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 000000000119c110 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc R13: 00007ffdaf18566f R14: 00007f3a850639c0 R15: 000000000119c0dc INFO: task syz-executor.3:22195 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29672 22195 10514 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007fee87719c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffdd80f01ff R14: 00007fee8771a9c0 R15: 000000000119c034 INFO: task syz-executor.3:22221 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29360 22221 10514 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007fee876d7c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000000119c1b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184 R13: 00007ffdd80f01ff R14: 00007fee876d89c0 R15: 000000000119c184 INFO: task syz-executor.1:22178 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29000 22178 8004 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 __lock_sock+0x118/0x1f0 net/core/sock.c:2245 lock_sock_nested+0xe1/0x100 net/core/sock.c:2790 lock_sock include/net/sock.h:1471 [inline] af_alg_sendmsg+0x1ac/0xff0 crypto/af_alg.c:892 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f2fafcebc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000004040 RSI: 0000000020002040 RDI: 0000000000000008 RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007fff5a0f358f R14: 00007f2fafcec9c0 R15: 000000000119c034 INFO: task syz-executor.1:22182 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29600 22182 8004 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 __lock_sock+0x118/0x1f0 net/core/sock.c:2245 lock_sock_nested+0xe1/0x100 net/core/sock.c:2790 lock_sock include/net/sock.h:1471 [inline] af_alg_sendmsg+0x1ac/0xff0 crypto/af_alg.c:892 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f2fafccac68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 000000000000c010 RSI: 0000000020003740 RDI: 0000000000000007 RBP: 000000000119c110 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc R13: 00007fff5a0f358f R14: 00007f2fafccb9c0 R15: 000000000119c0dc INFO: task syz-executor.1:22189 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29672 22189 8004 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f2fafca9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000007 RBP: 000000000119c1b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184 R13: 00007fff5a0f358f R14: 00007f2fafcaa9c0 R15: 000000000119c184 INFO: task syz-executor.1:22193 blocked for more than 140 seconds. Not tainted 4.14.216-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29672 22193 8004 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 af_alg_wait_for_completion crypto/af_alg.c:495 [inline] af_alg_wait_for_completion+0x33/0xa0 crypto/af_alg.c:490 _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13f4/0x1d70 crypto/algif_aead.c:336 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg net/socket.c:826 [inline] sock_recvmsg+0xc0/0x100 net/socket.c:822 ___sys_recvmsg+0x20b/0x4d0 net/socket.c:2221 __sys_recvmsg+0xa0/0x120 net/socket.c:2266 SYSC_recvmsg net/socket.c:2278 [inline] SyS_recvmsg+0x27/0x40 net/socket.c:2273 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007f2fafc88c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000008 RBP: 000000000119c260 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c22c R13: 00007fff5a0f358f R14: 00007f2fafc899c0 R15: 000000000119c22c Showing all locks held in the system: 1 lock held by khungtaskd/1531: #0: (tasklist_lock){.+.?}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 1 lock held by in:imklog/7695: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:769 1 lock held by syz-executor.2/22164: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] aead_recvmsg+0xa6/0x1d70 crypto/algif_aead.c:334 1 lock held by syz-executor.2/22214: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] aead_recvmsg+0xa6/0x1d70 crypto/algif_aead.c:334 1 lock held by syz-executor.3/22195: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1c6/0x440 crypto/af_alg.c:802 1 lock held by syz-executor.3/22221: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1c6/0x440 crypto/af_alg.c:802 1 lock held by syz-executor.1/22189: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1c6/0x440 crypto/af_alg.c:802 1 lock held by syz-executor.1/22193: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1471 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1c6/0x440 crypto/af_alg.c:802 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1531 Comm: khungtaskd Not tainted 4.14.216-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4622 Comm: systemd-journal Not tainted 4.14.216-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a14b60c0 task.stack: ffff8880a14b8000 RIP: 0010:debug_check_no_locks_freed+0x0/0x280 kernel/locking/lockdep.c:4485 RSP: 0018:ffff8880a14bfaf0 EFLAGS: 00000297 RAX: ffff8880a14b60c0 RBX: ffff8880a47b0780 RCX: 0000000000000000 RDX: ffffffff8bf939a0 RSI: 0000000000000038 RDI: ffff8880a47b0780 RBP: ffffffff87c7f4a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880a14b60c0 R12: ffffffff8bf939a0 R13: ffff88823f8b9010 R14: 0000000000000001 R15: ffff8880a14bfe88 FS: 00007faf628e88c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faf5fe4c000 CR3: 00000000a231a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_init+0x17/0x100 kernel/locking/spinlock_debug.c:23 aa_alloc_file_ctx security/apparmor/include/file.h:62 [inline] apparmor_file_alloc_security+0x150/0x800 security/apparmor/lsm.c:431 security_file_alloc+0x66/0xa0 security/security.c:874 get_empty_filp+0x15c/0x3e0 fs/file_table.c:129 path_openat+0x84/0x2970 fs/namei.c:3545 do_filp_open+0x179/0x3c0 fs/namei.c:3603 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7faf61e78840 RSP: 002b:00007fff90d975d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fff90d978e0 RCX: 00007faf61e78840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000056089fcb3310 RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 000056089fca6040 R14: 00007fff90d978a0 R15: 000056089fcb38f0 Code: c7 40 b9 f9 8b e8 61 6e 3d 00 8b 05 db 87 b8 0a 85 c0 75 b2 e9 c1 a5 bd 05 e8 4d 6e 3d 00 eb 9c 90 66 2e 0f 1f 84 00 00 00 00 00 <48> c7 c0 60 00 3d 89 41 57 48 ba 00 00 00 00 00 fc ff df 48 89