diff options
| author | Fan Wu <fanwu01@zju.edu.cn> | 2026-08-20 13:53:06 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-09-01 16:50:04 +0200 |
| commit | 263f7d61a4201cde16849b2d016251806e7418be (patch) | |
| tree | 861df7c5b878b85741cf319ece81111b4c41c3b1 /include/trace/events/exceptions.h | |
| download | linux-stable-263f7d61a4201cde16849b2d016251806e7418be.tar.gz linux-stable-263f7d61a4201cde16849b2d016251806e7418be.zip | |
usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stopgrafted
cc_debounce_dwork is queued from the set_cc() and start_toggling()
callbacks, which run from TCPM's kthread worker. port_stop() returns
before tcpm_unregister_port() destroys that worker. Flushing the worker
during unregister may therefore run a callback which queues the delayed
work after port_stop() has returned.
The delayed work can then run after devres has freed pmic_typec_port.
Use disable_delayed_work_sync() in port_stop() to cancel a pending
instance and prevent the TCPM callbacks from queueing another one.
This issue was found by an in-house static analysis tool.
Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
Cc: stable <stable@kernel.org> # v6.10+
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/trace/events/exceptions.h')
| -rw-r--r-- | include/trace/events/exceptions.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/include/trace/events/exceptions.h b/include/trace/events/exceptions.h new file mode 100644 index 000000000..a631f8de8 --- /dev/null +++ b/include/trace/events/exceptions.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM exceptions + +#if !defined(_TRACE_PAGE_FAULT_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_PAGE_FAULT_H + +#include <linux/tracepoint.h> + +DECLARE_EVENT_CLASS(exceptions, + + TP_PROTO(unsigned long address, struct pt_regs *regs, + unsigned long error_code), + + TP_ARGS(address, regs, error_code), + + TP_STRUCT__entry( + __field( unsigned long, address ) + __field( unsigned long, ip ) + __field( unsigned long, error_code ) + ), + + TP_fast_assign( + __entry->address = address; + __entry->ip = instruction_pointer(regs); + __entry->error_code = error_code; + ), + + TP_printk("address=%ps ip=%ps error_code=0x%lx", + (void *)__entry->address, (void *)__entry->ip, + __entry->error_code) ); + +DEFINE_EVENT(exceptions, page_fault_user, + TP_PROTO(unsigned long address, struct pt_regs *regs, unsigned long error_code), + TP_ARGS(address, regs, error_code)); +DEFINE_EVENT(exceptions, page_fault_kernel, + TP_PROTO(unsigned long address, struct pt_regs *regs, unsigned long error_code), + TP_ARGS(address, regs, error_code)); + +#endif /* _TRACE_PAGE_FAULT_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |