SPCP8x5 ttyUSB0: failed to set control lines: -19
------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff81613fbd>] prepare_to_wait+0x16d/0x1f0 kernel/sched/wait.c:272
WARNING: CPU: 1 PID: 4592 at kernel/sched/core.c:9897 __might_sleep+0xa2/0xd0 kernel/sched/core.c:-1
Modules linked in:
CPU: 1 PID: 4592 Comm: syz.3.51 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__might_sleep+0xa2/0xd0 kernel/sched/core.c:9893
Code: 5d e9 52 00 00 00 c6 05 9e 4b b2 0c 01 48 89 fb 48 c7 c7 20 ac 8b 8a 41 89 f6 89 ee 48 89 ca e8 b4 59 f3 ff 48 89 df 44 89 f6 <0f> 0b eb c9 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 77 ff ff ff 49
RSP: 0018:ffffc90003717460 EFLAGS: 00010246
RAX: 06c4bec1e7357300 RBX: ffffffff8c426712 RCX: ffff88802b200000
RDX: 0000000000000000 RSI: 0000000000000112 RDI: ffffffff8c426712
RBP: 0000000000000001 R08: ffffc90003717167 R09: 1ffff920006e2e2c
R10: dffffc0000000000 R11: fffff520006e2e2d R12: 0000000000000000
R13: 00000000ffffffff R14: 0000000000000112 R15: dffffc0000000000
FS:  00007f470a6ff6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4709670050 CR3: 0000000075404000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 might_alloc include/linux/sched/mm.h:274 [inline]
 slab_pre_alloc_hook+0x4a/0x300 mm/slab.h:710
 slab_alloc_node mm/slub.c:3279 [inline]
 __kmem_cache_alloc_node+0x4f/0x270 mm/slub.c:3398
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 spcp8x5_get_msr+0xd3/0x2a0 drivers/usb/serial/spcp8x5.c:209
 spcp8x5_carrier_raised+0x2d/0x70 drivers/usb/serial/spcp8x5.c:255
 tty_port_carrier_raised drivers/tty/tty_port.c:450 [inline]
 tty_port_block_til_ready+0x43c/0x8b0 drivers/tty/tty_port.c:569
 tty_open+0x47f/0xcb0 drivers/tty/tty_io.c:2145
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3677 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3834
 do_filp_open+0x1ee/0x420 fs/namei.c:3861
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f470979e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f470a6ff028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4709a25fa0 RCX: 00007f470979e159
RDX: 0000000000000000 RSI: 0000200000000700 RDI: ffffffffffffff9c
RBP: 00007f4709835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4709a26038 R14: 00007f4709a25fa0 R15: 00007ffec542ce18
 </TASK>