SPCP8x5 ttyUSB0: failed to set control lines: -32
------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8165d2f1>] prepare_to_wait+0x171/0x200 kernel/sched/wait.c:277
WARNING: CPU: 0 PID: 11683 at kernel/sched/core.c:10139 __might_sleep+0xa6/0xe0 kernel/sched/core.c:-1
Modules linked in:
CPU: 0 PID: 11683 Comm: syz.3.1941 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__might_sleep+0xa6/0xe0 kernel/sched/core.c:10135
Code: 5d e9 5e 00 00 00 c6 05 e6 60 18 0d 01 48 89 fb 48 c7 c7 20 5d ca 8a 41 89 f6 89 ee 48 89 ca e8 20 97 f2 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:ffffc90004157438 EFLAGS: 00010246
RAX: b83c3dc3ea594f00 RBX: ffffffff8c81ce0a RCX: 0000000000080000
RDX: ffffc9000da7c000 RSI: 0000000000000132 RDI: ffffffff8c81ce0a
RBP: 0000000000000001 R08: ffffc90004157047 R09: 1ffff9200082ae08
R10: dffffc0000000000 R11: fffff5200082ae09 R12: 0000000000000000
R13: 00000000ffffffff R14: 0000000000000132 R15: dffffc0000000000
FS:  00007fe68e4cd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5016cf1ff8 CR3: 000000007d1bf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000045 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 might_alloc include/linux/sched/mm.h:306 [inline]
 slab_pre_alloc_hook+0x4a/0x300 mm/slab.h:714
 slab_alloc_node mm/slub.c:3477 [inline]
 __kmem_cache_alloc_node+0x53/0x250 mm/slub.c:3534
 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1098
 kmalloc include/linux/slab.h:600 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 spcp8x5_get_msr+0xd3/0x2a0 drivers/usb/serial/spcp8x5.c:209
 spcp8x5_carrier_raised+0x31/0x80 drivers/usb/serial/spcp8x5.c:255
 serial_port_carrier_raised+0x86/0xb0 drivers/usb/serial/usb-serial.c:762
 tty_port_carrier_raised drivers/tty/tty_port.c:448 [inline]
 tty_port_block_til_ready+0x443/0x8a0 drivers/tty/tty_port.c:567
 tty_open+0x48c/0xcc0 drivers/tty/tty_io.c:2144
 chrdev_open+0x58c/0x600 fs/char_dev.c:414
 do_dentry_open+0x880/0x14b0 fs/open.c:929
 do_open fs/namei.c:3683 [inline]
 path_openat+0x284f/0x3270 fs/namei.c:3844
 do_filp_open+0x1f2/0x430 fs/namei.c:3871
 do_sys_openat2+0x134/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x139/0x160 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe68d59e159
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:00007fe68e4cd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe68d825fa0 RCX: 00007fe68d59e159
RDX: 0000000000000041 RSI: 0000200000000b00 RDI: ffffffffffffff9c
RBP: 00007fe68d635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe68d826038 R14: 00007fe68d825fa0 R15: 00007ffd1cc99ad8
 </TASK>