INFO: task syz-executor.4:26355 blocked for more than 143 seconds. Not tainted 5.14.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:29696 pid:26355 ppid: 8498 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5938 schedule+0xd3/0x270 kernel/sched/core.c:6017 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6076 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0x7b6/0x10a0 kernel/locking/mutex.c:1104 tls_sw_sendmsg+0x245/0x17f0 net/tls/tls_sw.c:942 inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:642 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:723 __sys_sendto+0x21c/0x320 net/socket.c:2019 __do_sys_sendto net/socket.c:2031 [inline] __se_sys_sendto net/socket.c:2027 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2027 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:00007f8ce8229188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffec2cdc46f R14: 00007f8ce8229300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1645: #0: ffffffff8b979840 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 1 lock held by in:imklog/8140: #0: ffff8880191238b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 3 locks held by kworker/1:6/9776: #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888010867d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2247 #1: ffffc9000a977db0 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2251 #2: ffff88802a8148d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0x127/0x190 net/tls/tls_sw.c:2262 1 lock held by syz-executor.4/26355: #0: ffff88802a8148d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tls_sw_sendmsg+0x245/0x17f0 net/tls/tls_sw.c:942 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1645 Comm: khungtaskd Not tainted 5.14.0-rc6-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:105 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xd0a/0xfc0 kernel/hung_task.c:295 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: 8141 Comm: rs:main Q:Reg Not tainted 5.14.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline] RIP: 0010:lock_release+0x14a/0x720 kernel/locking/lockdep.c:5641 Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 69 05 00 00 45 8b 8e ec 09 00 00 45 85 c9 0f 85 9e 02 00 00 9c <8f> 04 24 fa 48 c7 c7 a0 c7 8b 89 e8 d6 52 d0 07 48 89 da 83 e3 07 RSP: 0018:ffffc9000d277910 EFLAGS: 00000046 RAX: 0000000000000007 RBX: ffffffff8d6c7aec RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888017574cac RBP: 1ffff92001a4ef25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8b998c88 R13: fffff52001a4ef4d R14: ffff8880175742c0 R15: ffffc9000d277dd0 FS: 00007f27d6472700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f91d7efd000 CR3: 0000000039fdd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline] ktime_get_coarse_real_ts64+0x1b2/0x200 kernel/time/timekeeping.c:2239 current_time+0x72/0x2c0 fs/inode.c:2313 file_update_time+0x119/0x520 fs/inode.c:1984 file_modified fs/inode.c:2024 [inline] file_modified+0x7d/0xa0 fs/inode.c:2009 ext4_write_checks fs/ext4/file.c:247 [inline] ext4_buffered_write_iter+0xff/0x4d0 fs/ext4/file.c:264 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write+0x426/0x650 fs/read_write.c:518 vfs_write+0x75a/0xa40 fs/read_write.c:605 ksys_write+0x12d/0x250 fs/read_write.c:658 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: 0033:0x7f27d8eb61cd Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f27d6471590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f27cc010330 RCX: 00007f27d8eb61cd RDX: 000000000000046e RSI: 00007f27cc010330 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f27cc0100b0 R13: 00007f27d64715b0 R14: 000055ca73886360 R15: 000000000000046e ---------------- Code disassembly (best guess): 0: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 4: 48 89 f8 mov %rdi,%rax 7: 83 e0 07 and $0x7,%eax a: 83 c0 03 add $0x3,%eax d: 38 d0 cmp %dl,%al f: 7c 08 jl 0x19 11: 84 d2 test %dl,%dl 13: 0f 85 69 05 00 00 jne 0x582 19: 45 8b 8e ec 09 00 00 mov 0x9ec(%r14),%r9d 20: 45 85 c9 test %r9d,%r9d 23: 0f 85 9e 02 00 00 jne 0x2c7 29: 9c pushfq 2a: 8f 04 24 popq (%rsp) <-- trapping instruction 2d: fa cli 2e: 48 c7 c7 a0 c7 8b 89 mov $0xffffffff898bc7a0,%rdi 35: e8 d6 52 d0 07 callq 0x7d05310 3a: 48 89 da mov %rbx,%rdx 3d: 83 e3 07 and $0x7,%ebx