INFO: task hung in tls_push

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in tls_push_record net	C			472	2233d	2403d	0/28	closed as invalid on 2019/06/10 23:18
linux-4.19	INFO: task hung in tls_push_record (2)	C		error	29	681d	1342d	0/1	upstream: reported C repro on 2021/04/01 18:00

audit: type=1804 audit(1604496585.461:66): pid=10553 uid=0 auid=0 ses=4 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir461883185/syzkaller.WwcGmP/2052/bus" dev="sda1" ino=17007 res=1 audit: type=1804 audit(1604496585.481:67): pid=10575 uid=0 auid=0 ses=4 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir461883185/syzkaller.WwcGmP/2052/bus" dev="sda1" ino=17007 res=1 INFO: task syz-executor.2:10557 blocked for more than 140 seconds. Not tainted 4.19.154-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27112 10557 13537 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1801 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 crypto_wait_req include/linux/crypto.h:517 [inline] tls_do_encryption net/tls/tls_sw.c:193 [inline] tls_push_record+0xec4/0x1370 net/tls/tls_sw.c:228 tls_sw_sendpage+0x8c6/0xd00 net/tls/tls_sw.c:585 inet_sendpage+0x164/0x650 net/ipv4/af_inet.c:815 kernel_sendpage net/socket.c:3378 [inline] sock_sendpage+0xdf/0x140 net/socket.c:847 pipe_to_sendpage+0x268/0x330 fs/splice.c:452 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x389/0x800 fs/splice.c:627 splice_from_pipe fs/splice.c:662 [inline] generic_splice_sendpage+0xd4/0x140 fs/splice.c:833 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45deb9 Code: Bad RIP value. RSP: 002b:00007f4a9e874c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027f40 RCX: 000000000045deb9 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000009 RBP: 000000000118c010 R08: 0000000000000000 R09: 0000000000000000 R10: 0000800100020001 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007ffc77f5eb0f R14: 00007f4a9e8759c0 R15: 000000000118bfd4 Showing all locks held in the system: 1 lock held by khungtaskd/1566: #0: 00000000bcd63dac (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by in:imklog/7799: #0: 000000009db66866 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.2/10557: #0: 00000000872a0cdd (sk_lock-AF_INET6){+.+.}, at: lock_sock include/net/sock.h:1510 [inline] #0: 00000000872a0cdd (sk_lock-AF_INET6){+.+.}, at: tls_sw_sendpage+0x151/0xd00 net/tls/tls_sw.c:525 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1566 Comm: khungtaskd Not tainted 4.19.154-syzkaller #0 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+0x1fc/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9985 Comm: kworker/u4:7 Not tainted 4.19.154-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:__lock_release kernel/locking/lockdep.c:3685 [inline] RIP: 0010:lock_release+0x2b6/0x8b0 kernel/locking/lockdep.c:3926 Code: 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 11 48 89 fa 83 e2 07 83 c2 01 38 ca 7c 08 84 c9 0f 85 41 05 00 00 <66> f7 40 22 f0 ff 74 37 48 8d 78 20 48 ba 00 00 00 00 00 fc ff df RSP: 0018:ffff88805acbfc00 EFLAGS: 00000046 RAX: ffff88805cbe48d8 RBX: ffffffff8d23a720 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff89f85aa0 RDI: ffff88805cbe48fa RBP: ffffffff89f85aa0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1100b597f83 R13: ffffffff87f96e55 R14: ffff88805cbe4000 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f869ee4a000 CR3: 00000000b0a61000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:681 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:423 [inline] batadv_nc_worker+0x66c/0xd50 net/batman-adv/network-coding.c:730 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415