SPCP8x5 ttyUSB0: failed to set control lines: -32
------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff815a1c36>] prepare_to_wait+0x166/0x1f0 kernel/sched/wait.c:269
WARNING: CPU: 1 PID: 4386 at kernel/sched/core.c:9610 __might_sleep+0xb2/0xf0 kernel/sched/core.c:-1
Modules linked in:
CPU: 0 PID: 4386 Comm: syz.4.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__might_sleep+0xb2/0xf0 kernel/sched/core.c:9606
Code: 00 00 c6 05 65 67 23 0c 01 48 89 fb 48 c7 c7 40 b9 2a 8a 41 89 f6 89 ee 89 d5 48 89 ca e8 86 7c 61 08 48 89 df 44 89 f6 89 ea <0f> 0b eb c5 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 6d ff ff ff 49
RSP: 0018:ffffc90003eef4a8 EFLAGS: 00010246
RAX: af7e2d5620830f00 RBX: ffffffff8bc1c77a RCX: ffff88802b409dc0
RDX: 0000000000000000 RSI: 00000000000000d1 RDI: ffffffff8bc1c77a
RBP: 0000000000000000 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: ffff888022e6e000
R13: dffffc0000000000 R14: 00000000000000d1 R15: dffffc0000000000
FS:  00007fa76bf946c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16eaf4efe0 CR3: 00000000745b8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 might_alloc include/linux/sched/mm.h:209 [inline]
 slab_pre_alloc_hook+0x42/0xc0 mm/slab.h:492
 slab_alloc_node mm/slub.c:3139 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc_trace+0x47/0x290 mm/slub.c:3250
 kmalloc include/linux/slab.h:607 [inline]
 kzalloc include/linux/slab.h:738 [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:405 [inline]
 tty_port_block_til_ready+0x43f/0x8b0 drivers/tty/tty_port.c:523
 tty_open+0x485/0xcd0 drivers/tty/tty_io.c:2165
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7f7/0xf90 fs/open.c:826
 do_open fs/namei.c:3659 [inline]
 path_openat+0x2718/0x2fb0 fs/namei.c:3793
 do_filp_open+0x1df/0x400 fs/namei.c:3820
 do_sys_openat2+0x14b/0x500 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa76c934159
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:00007fa76bf94028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa76cbbbfa0 RCX: 00007fa76c934159
RDX: 0000000000000000 RSI: 0000200000000700 RDI: ffffffffffffff9c
RBP: 00007fa76c9cb024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa76cbbc038 R14: 00007fa76cbbbfa0 R15: 00007fff4a1b61e8
 </TASK>