INFO: task syz-executor.3:13018 blocked for more than 143 seconds. Not tainted 5.3.0-rc5+ #178 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29080 13018 9770 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x755/0x1580 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136 crypto_wait_req include/linux/crypto.h:685 [inline] _aead_recvmsg crypto/algif_aead.c:309 [inline] aead_recvmsg+0x11e3/0x16a0 crypto/algif_aead.c:330 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0xce/0x110 net/socket.c:885 sock_read_iter+0x299/0x3b0 net/socket.c:967 call_read_iter include/linux/fs.h:1864 [inline] do_iter_readv_writev+0x711/0x8f0 fs/read_write.c:691 do_iter_read+0x27c/0x660 fs/read_write.c:933 vfs_readv+0xf0/0x160 fs/read_write.c:997 do_readv+0x15b/0x330 fs/read_write.c:1034 __do_sys_readv fs/read_write.c:1125 [inline] __se_sys_readv fs/read_write.c:1122 [inline] __x64_sys_readv+0x75/0xb0 fs/read_write.c:1122 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 Code: Bad RIP value. RSP: 002b:00007f7814370c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78143716d4 R13: 00000000004c6bb4 R14: 00000000004dc0e8 R15: 00000000ffffffff INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc5+ #178 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+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b 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+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 23347 Comm: net.agent Not tainted 5.3.0-rc5+ #178 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x7f0baba85e90 Code: cf 03 00 48 89 d0 48 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d 98 8f 2d 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 <55> 48 89 e5 41 56 41 55 41 54 53 0f 1f 44 00 00 4c 8b 25 29 e5 2d RSP: 002b:00007ffcddbf1d38 EFLAGS: 00000202 RAX: 0000000000b84a00 RBX: 0000000000b84a00 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 0000000000b84598 RDI: 0000000000b84a00 RBP: 0000000000b84598 R08: 0000000000000000 R09: 00007f0babafd800 R10: 0000000000000000 R11: 00007f0babb2f750 R12: 0000000000b86620 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f0babf7c700 GS: 0000000000000000