====================================================== WARNING: possible circular locking dependency detected 4.15.0-rc2-mm1+ #39 Not tainted ------------------------------------------------------ keyring/vboxnet/5561 is trying to acquire lock: (&pipe->mutex/1){+.+.}, at: [<00000000b02b0577>] pipe_lock_nested fs/pipe.c:67 [inline] (&pipe->mutex/1){+.+.}, at: [<00000000b02b0577>] pipe_lock+0x56/0x70 fs/pipe.c:75 but task is already holding lock: (sb_writers){.+.+}, at: [<00000000fc66cdfb>] file_start_write include/linux/fs.h:2719 [inline] (sb_writers){.+.+}, at: [<00000000fc66cdfb>] do_splice fs/splice.c:1146 [inline] (sb_writers){.+.+}, at: [<00000000fc66cdfb>] SYSC_splice fs/splice.c:1402 [inline] (sb_writers){.+.+}, at: [<00000000fc66cdfb>] SyS_splice+0x1117/0x1630 fs/splice.c:1382 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (sb_writers){.+.+}: spin_lock include/linux/spinlock.h:315 [inline] simple_xattr_list_add+0x70/0x1f0 fs/xattr.c:989 shmem_initxattrs+0xa3/0x1e0 mm/shmem.c:3325 security_inode_init_security+0x326/0x390 security/security.c:491 shmem_mknod+0x9b/0x1b0 mm/shmem.c:2998 vfs_mknod+0x34f/0x6a0 fs/namei.c:3726 -> #5 ((completion)&req.done){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 complete_acquire include/linux/completion.h:40 [inline] __wait_for_common kernel/sched/completion.c:109 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0xcb/0x7b0 kernel/sched/completion.c:144 devtmpfs_create_node+0x32b/0x4a0 drivers/base/devtmpfs.c:115 device_add+0x120f/0x1640 drivers/base/core.c:1824 device_register+0x1d/0x20 drivers/base/core.c:1905 tty_register_device_attr+0x422/0x740 drivers/tty/tty_io.c:2956 tty_port_register_device_attr_serdev+0x100/0x140 drivers/tty/tty_port.c:166 uart_add_one_port+0xa7a/0x15a0 drivers/tty/serial/serial_core.c:2783 serial8250_register_8250_port+0xfac/0x1990 drivers/tty/serial/8250/8250_core.c:1045 serial_pnp_probe+0x5e7/0xac0 drivers/tty/serial/8250/8250_pnp.c:480 pnp_device_probe+0x15f/0x250 drivers/pnp/driver.c:109 really_probe drivers/base/dd.c:424 [inline] driver_probe_device+0x71b/0xae0 drivers/base/dd.c:566 __driver_attach+0x181/0x1c0 drivers/base/dd.c:800 bus_for_each_dev+0x154/0x1e0 drivers/base/bus.c:313 driver_attach+0x3d/0x50 drivers/base/dd.c:819 bus_add_driver+0x466/0x620 drivers/base/bus.c:669 driver_register+0x1bf/0x3c0 drivers/base/driver.c:168 pnp_register_driver+0x75/0xa0 drivers/pnp/driver.c:272 serial8250_pnp_init+0x15/0x20 drivers/tty/serial/8250/8250_pnp.c:537 serial8250_init+0x8f/0x270 drivers/tty/serial/8250/8250_core.c:1122 do_one_initcall+0x9e/0x330 init/main.c:833 do_initcall_level init/main.c:899 [inline] do_initcalls init/main.c:907 [inline] do_basic_setup init/main.c:925 [inline] kernel_init_freeable+0x469/0x521 init/main.c:1073 kernel_init+0x13/0x172 init/main.c:1000 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524 -> #4 (&port->mutex){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 uart_set_termios+0x8f/0x5b0 drivers/tty/serial/serial_core.c:1416 tty_set_termios+0x6d4/0xa40 drivers/tty/tty_ioctl.c:334 set_termios+0x377/0x6b0 drivers/tty/tty_ioctl.c:414 tty_mode_ioctl+0x9fb/0xb10 drivers/tty/tty_ioctl.c:749 n_tty_ioctl_helper+0x40/0x360 drivers/tty/tty_ioctl.c:940 n_tty_ioctl+0x148/0x2d0 drivers/tty/n_tty.c:2435 tty_ioctl+0x32e/0x1600 drivers/tty/tty_io.c:2638 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #3 (&tty->termios_rwsem){++++}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 down_write+0x87/0x120 kernel/locking/rwsem.c:70 n_tty_flush_buffer+0x21/0x320 drivers/tty/n_tty.c:357 tty_buffer_flush+0x29a/0x390 drivers/tty/tty_buffer.c:233 tty_ldisc_flush+0x25/0x70 drivers/tty/tty_ldisc.c:418 tty_port_close_start.part.4+0x1cd/0x4e0 drivers/tty/tty_port.c:603 tty_port_close_start drivers/tty/tty_port.c:646 [inline] tty_port_close+0x3f/0x80 drivers/tty/tty_port.c:640 uart_close+0x77/0x1d0 drivers/tty/serial/serial_core.c:1487 tty_release+0x446/0x14c0 drivers/tty/tty_io.c:1639 __fput+0x333/0x7f0 fs/file_table.c:210 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x199/0x270 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264 entry_SYSCALL_64_fastpath+0x94/0x96 -> #2 (&buf->lock){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 tty_buffer_flush+0xbd/0x390 drivers/tty/tty_buffer.c:222 tty_ldisc_flush+0x25/0x70 drivers/tty/tty_ldisc.c:418 tty_port_close_start.part.4+0x1cd/0x4e0 drivers/tty/tty_port.c:603 tty_port_close_start drivers/tty/tty_port.c:646 [inline] tty_port_close+0x3f/0x80 drivers/tty/tty_port.c:640 uart_close+0x77/0x1d0 drivers/tty/serial/serial_core.c:1487 tty_release+0x446/0x14c0 drivers/tty/tty_io.c:1639 __fput+0x333/0x7f0 fs/file_table.c:210 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x199/0x270 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264 entry_SYSCALL_64_fastpath+0x94/0x96 -> #1 (&tty->ldisc_sem){++++}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __ldsem_down_read_nested+0xd1/0xa90 drivers/tty/tty_ldsem.c:325 ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 tty_ldisc_ref_wait+0x25/0x80 drivers/tty/tty_ldisc.c:277 tty_read+0xf8/0x250 drivers/tty/tty_io.c:852 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 vfs_readv+0x121/0x1c0 fs/read_write.c:959 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x508/0xae0 fs/splice.c:416 do_splice_to+0x110/0x170 fs/splice.c:880 do_splice fs/splice.c:1173 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x11a8/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 -> #0 (&pipe->mutex/1){+.+.}: check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 pipe_lock_nested fs/pipe.c:67 [inline] pipe_lock+0x56/0x70 fs/pipe.c:75 iter_file_splice_write+0x264/0xf30 fs/splice.c:699 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 other info that might help us debug this: Chain exists of: &pipe->mutex/1 --> (completion)&req.done --> sb_writers Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers); lock((completion)&req.done); lock(sb_writers); lock(&pipe->mutex/1); *** DEADLOCK *** 1 lock held by keyring/vboxnet/5561: #0: (sb_writers){.+.+}, at: [<00000000fc66cdfb>] file_start_write include/linux/fs.h:2719 [inline] #0: (sb_writers){.+.+}, at: [<00000000fc66cdfb>] do_splice fs/splice.c:1146 [inline] #0: (sb_writers){.+.+}, at: [<00000000fc66cdfb>] SYSC_splice fs/splice.c:1402 [inline] #0: (sb_writers){.+.+}, at: [<00000000fc66cdfb>] SyS_splice+0x1117/0x1630 fs/splice.c:1382 stack backtrace: CPU: 1 PID: 5561 Comm: keyring/vboxnet Not tainted 4.15.0-rc2-mm1+ #39 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+0x194/0x257 lib/dump_stack.c:53 print_circular_bug+0x42d/0x610 kernel/locking/lockdep.c:1271 check_prev_add+0x666/0x15f0 kernel/locking/lockdep.c:1914 check_prevs_add kernel/locking/lockdep.c:2031 [inline] validate_chain kernel/locking/lockdep.c:2473 [inline] __lock_acquire+0x3498/0x47f0 kernel/locking/lockdep.c:3500 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 pipe_lock_nested fs/pipe.c:67 [inline] pipe_lock+0x56/0x70 fs/pipe.c:75 iter_file_splice_write+0x264/0xf30 fs/splice.c:699 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x7d5/0x1630 fs/splice.c:1382 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a09 RSP: 002b:00007f4a41f12c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452a09 RDX: 0000000000000017 RSI: 0000000000000000 RDI: 0000000000000015 RBP: 0000000000000589 R08: 00000010fffffdf8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5578 R13: 00000000ffffffff R14: 00007f4a41f136d4 R15: 0000000000000000 device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5575 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5575 comm=syz-executor2 device eql entered promiscuous mode device gre0 entered promiscuous mode device syz3 entered promiscuous mode skbuff: bad partial csum: csum=65535/0 len=28 skbuff: bad partial csum: csum=65535/0 len=28 nla_parse: 7 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. DRBG: could not allocate CTR cipher TFM handle: ctr(aes) netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app QAT: Invalid ioctl updating oom_score_adj for 6043 (syz-executor4) from 0 to 0 because it shares mm with 6033 (syz-executor4). Report if this is unexpected. updating oom_score_adj for 6058 (syz-executor4) from 0 to 0 because it shares mm with 6033 (syz-executor4). Report if this is unexpected. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor7'. QAT: Invalid ioctl raw_sendmsg: syz-executor1 forgot to set AF_INET. Fix it! netlink: 8 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. QAT: Invalid ioctl QAT: Invalid ioctl ICMPv6: NA: 22:f3:6a:15:ab:1a advertised our address fe80::aa on syz0! dccp_invalid_packet: P.Data Offset(4) too small dccp_invalid_packet: P.Data Offset(4) too small ICMPv6: NA: 22:f3:6a:15:ab:1a advertised our address fe80::aa on syz0! xprt_adjust_timeout: rq_timeout = 0! xprt_adjust_timeout: rq_timeout = 0! kauditd_printk_skb: 192 callbacks suppressed audit: type=1400 audit(1513601259.931:604): avc: denied { setpcap } for pid=6386 comm="syz-executor3" capability=8 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 device gre0 entered promiscuous mode kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 6434 Comm: syz-executor0 Not tainted 4.15.0-rc2-mm1+ #39 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline] RIP: 0010:get_unaligned_le32 include/linux/unaligned/access_ok.h:15 [inline] RIP: 0010:crypto_chacha20_init crypto/chacha20_generic.c:52 [inline] RIP: 0010:crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:85 RSP: 0018:ffff8801d078f4a0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 00000000e6000000 RCX: ffffffff8226f20b RDX: 0000000000000000 RSI: ffffc90002c86000 RDI: ffff8801d078f53c RBP: ffff8801d078f6c0 R08: ffffed003981e0c4 R09: ffff8801cc0f0600 R10: ffff8801d078f6e0 R11: ffffed003981e0c3 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f3e66eda700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3e66eb9000 CR3: 00000001c3b4a006 CR4: 00000000001606e0 Call Trace: chacha20_simd+0xe4/0x410 arch/x86/crypto/chacha20_glue.c:78 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] _skcipher_recvmsg crypto/algif_skcipher.c:126 [inline] skcipher_recvmsg+0x739/0xf20 crypto/algif_skcipher.c:165 sock_recvmsg_nosec net/socket.c:809 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:816 sock_read_iter+0x361/0x560 net/socket.c:893 call_read_iter include/linux/fs.h:1770 [inline] aio_read+0x2b0/0x3a0 fs/aio.c:1501 io_submit_one fs/aio.c:1611 [inline] do_io_submit+0xf99/0x14f0 fs/aio.c:1682 SYSC_io_submit fs/aio.c:1707 [inline] SyS_io_submit+0x27/0x30 fs/aio.c:1704 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a09 RSP: 002b:00007f3e66ed9c58 EFLAGS: 00000212 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452a09 RDX: 0000000020738000 RSI: 0000000000000002 RDI: 00007f3e66eb9000 RBP: 0000000000000554 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5080 R13: 00000000ffffffff R14: 00007f3e66eda6d4 R15: 0000000000000000 Code: 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d6 05 00 00 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 89 9d 7c fe ff ff 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RIP: __le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline] RSP: ffff8801d078f4a0 RIP: get_unaligned_le32 include/linux/unaligned/access_ok.h:15 [inline] RSP: ffff8801d078f4a0 RIP: crypto_chacha20_init crypto/chacha20_generic.c:52 [inline] RSP: ffff8801d078f4a0 RIP: crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:85 RSP: ffff8801d078f4a0 ---[ end trace 0bb0d5f5b5b600b0 ]--- kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#2] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 6449 Comm: syz-executor0 Tainted: G D 4.15.0-rc2-mm1+ #39 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline] RIP: 0010:get_unaligned_le32 include/linux/unaligned/access_ok.h:15 [inline] RIP: 0010:crypto_chacha20_init crypto/chacha20_generic.c:52 [inline] RIP: 0010:crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:85 RSP: 0018:ffff8801cb0974a0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 00000000e6000000 RCX: ffffffff8226f20b RDX: 0000000000000000 RSI: ffffc90002d07000 RDI: ffff8801cb09753c RBP: ffff8801cb0976c0 R08: ffffed00378d7414 R09: ffff8801bc6ba080 R10: ffff8801cb0976e0 R11: ffffed00378d7413 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f3e66eb8700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3e66e76000 CR3: 00000001c3b4a004 CR4: 00000000001606f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020001000 DR3: 0000000020001008 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: chacha20_simd+0xe4/0x410 arch/x86/crypto/chacha20_glue.c:78 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline] _skcipher_recvmsg crypto/algif_skcipher.c:126 [inline] skcipher_recvmsg+0x739/0xf20 crypto/algif_skcipher.c:165 sock_recvmsg_nosec net/socket.c:809 [inline] sock_recvmsg+0xc9/0x110 net/socket.c:816 sock_read_iter+0x361/0x560 net/socket.c:893 call_read_iter include/linux/fs.h:1770 [inline] aio_read+0x2b0/0x3a0 fs/aio.c:1501 io_submit_one fs/aio.c:1611 [inline] do_io_submit+0xf99/0x14f0 fs/aio.c:1682 SYSC_io_submit fs/aio.c:1707 [inline] SyS_io_submit+0x27/0x30 fs/aio.c:1704 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x452a09 RSP: 002b:00007f3e66eb7c58 EFLAGS: 00000212 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452a09 RDX: 0000000020738000 RSI: 0000000000000002 RDI: 00007f3e66e76000 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ed0b8 R13: 00000000ffffffff R14: 00007f3e66eb86d4 R15: 0000000000000010 Code: 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d6 05 00 00 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 89 9d 7c fe ff ff 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RIP: __le32_to_cpup include/uapi/linux/byteorder/little_endian.h:58 [inline] RSP: ffff8801cb0974a0 RIP: get_unaligned_le32 include/linux/unaligned/access_ok.h:15 [inline] RSP: ffff8801cb0974a0 RIP: crypto_chacha20_init crypto/chacha20_generic.c:52 [inline] RSP: ffff8801cb0974a0 RIP: crypto_chacha20_crypt+0x537/0xbd0 crypto/chacha20_generic.c:85 RSP: ffff8801cb0974a0 ---[ end trace 0bb0d5f5b5b600b1 ]---