On Tue, 30 Jun 2026 18:54:12 -0400, Steven Rostedt wrote:
> The trace events in drivers/ufs/core/ufs_trace.h were converted to take a
> pointer to the hba structure as an argument for the tracepoint and then in
> TP_printk() the printing of the dev_name from the ring buffer was
> converted to using the dev dereferenced pointer from the hba saved
> pointer.
>
> This is not allowed as the TP_printk() is executed at the time the trace
> event is read from /sys/kernel/tracing/trace file. That can happen
> literally, seconds, minutes, hours, weeks, days, or even months later!
> There is no guarantee that the hba pointer will still exist by the time it
> is dereferenced when the "trace" file is read.
>
> [...]
Applied to 7.2/scsi-fixes, thanks!
[1/1] ufs: core: tracing: Do not dereference pointers in TP_printk()
https://git.kernel.org/mkp/scsi/c/46aea2c64e11
--
Martin K. Petersen
