mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 22:37:01 +07:00
fe63b94a43
Booting 2.6.31 and executing echo 1 >/sys/kernel/debug/tracing/events/enable leads to BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<c032a583>] ftrace_raw_event_block_bio_bounce+0x4b/0xb9 Apparently, bio = bio_map_user(q, NULL, uaddr, len, reading, gfp_mask); is called in block/blk-map.c:58 where bio->bi_bdev in set to NULL and still is NULL when an attempt is made to evaluate bio->bi_bdev->bd_dev in include/trace/events/block.h:189. The tracepoint should ensure bio->bi_bdev is not dereferenced, if NULL. Signed-off-by: Carsten Emde <C.Emde@osadl.org> LKML-Reference: <4AAAC9B1.9060505@osadl.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
496 lines
13 KiB
C
496 lines
13 KiB
C
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM block
|
|
|
|
#if !defined(_TRACE_BLOCK_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_BLOCK_H
|
|
|
|
#include <linux/blktrace_api.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
TRACE_EVENT(block_rq_abort,
|
|
|
|
TP_PROTO(struct request_queue *q, struct request *rq),
|
|
|
|
TP_ARGS(q, rq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( int, errors )
|
|
__array( char, rwbs, 6 )
|
|
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
|
|
__entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
|
|
__entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
|
|
__entry->errors = rq->errors;
|
|
|
|
blk_fill_rwbs_rq(__entry->rwbs, rq);
|
|
blk_dump_cmd(__get_str(cmd), rq);
|
|
),
|
|
|
|
TP_printk("%d,%d %s (%s) %llu + %u [%d]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
__entry->rwbs, __get_str(cmd),
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->errors)
|
|
);
|
|
|
|
TRACE_EVENT(block_rq_insert,
|
|
|
|
TP_PROTO(struct request_queue *q, struct request *rq),
|
|
|
|
TP_ARGS(q, rq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( unsigned int, bytes )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
|
|
__entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
|
|
__entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
|
|
__entry->bytes = blk_pc_request(rq) ? blk_rq_bytes(rq) : 0;
|
|
|
|
blk_fill_rwbs_rq(__entry->rwbs, rq);
|
|
blk_dump_cmd(__get_str(cmd), rq);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
__entry->rwbs, __entry->bytes, __get_str(cmd),
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_rq_issue,
|
|
|
|
TP_PROTO(struct request_queue *q, struct request *rq),
|
|
|
|
TP_ARGS(q, rq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( unsigned int, bytes )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
|
|
__entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
|
|
__entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
|
|
__entry->bytes = blk_pc_request(rq) ? blk_rq_bytes(rq) : 0;
|
|
|
|
blk_fill_rwbs_rq(__entry->rwbs, rq);
|
|
blk_dump_cmd(__get_str(cmd), rq);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %u (%s) %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
__entry->rwbs, __entry->bytes, __get_str(cmd),
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_rq_requeue,
|
|
|
|
TP_PROTO(struct request_queue *q, struct request *rq),
|
|
|
|
TP_ARGS(q, rq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( int, errors )
|
|
__array( char, rwbs, 6 )
|
|
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
|
|
__entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
|
|
__entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
|
|
__entry->errors = rq->errors;
|
|
|
|
blk_fill_rwbs_rq(__entry->rwbs, rq);
|
|
blk_dump_cmd(__get_str(cmd), rq);
|
|
),
|
|
|
|
TP_printk("%d,%d %s (%s) %llu + %u [%d]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
__entry->rwbs, __get_str(cmd),
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->errors)
|
|
);
|
|
|
|
TRACE_EVENT(block_rq_complete,
|
|
|
|
TP_PROTO(struct request_queue *q, struct request *rq),
|
|
|
|
TP_ARGS(q, rq),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( int, errors )
|
|
__array( char, rwbs, 6 )
|
|
__dynamic_array( char, cmd, blk_cmd_buf_len(rq) )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = rq->rq_disk ? disk_devt(rq->rq_disk) : 0;
|
|
__entry->sector = blk_pc_request(rq) ? 0 : blk_rq_pos(rq);
|
|
__entry->nr_sector = blk_pc_request(rq) ? 0 : blk_rq_sectors(rq);
|
|
__entry->errors = rq->errors;
|
|
|
|
blk_fill_rwbs_rq(__entry->rwbs, rq);
|
|
blk_dump_cmd(__get_str(cmd), rq);
|
|
),
|
|
|
|
TP_printk("%d,%d %s (%s) %llu + %u [%d]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev),
|
|
__entry->rwbs, __get_str(cmd),
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->errors)
|
|
);
|
|
|
|
TRACE_EVENT(block_bio_bounce,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio),
|
|
|
|
TP_ARGS(q, bio),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev ?
|
|
bio->bi_bdev->bd_dev : 0;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_bio_complete,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio),
|
|
|
|
TP_ARGS(q, bio),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned, nr_sector )
|
|
__field( int, error )
|
|
__array( char, rwbs, 6 )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%d]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->error)
|
|
);
|
|
|
|
TRACE_EVENT(block_bio_backmerge,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio),
|
|
|
|
TP_ARGS(q, bio),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_bio_frontmerge,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio),
|
|
|
|
TP_ARGS(q, bio),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_bio_queue,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio),
|
|
|
|
TP_ARGS(q, bio),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_getrq,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
|
|
|
|
TP_ARGS(q, bio, rw),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
|
|
__entry->sector = bio ? bio->bi_sector : 0;
|
|
__entry->nr_sector = bio ? bio->bi_size >> 9 : 0;
|
|
blk_fill_rwbs(__entry->rwbs,
|
|
bio ? bio->bi_rw : 0, __entry->nr_sector);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_sleeprq,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio, int rw),
|
|
|
|
TP_ARGS(q, bio, rw),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
|
|
__entry->sector = bio ? bio->bi_sector : 0;
|
|
__entry->nr_sector = bio ? bio->bi_size >> 9 : 0;
|
|
blk_fill_rwbs(__entry->rwbs,
|
|
bio ? bio->bi_rw : 0, __entry->nr_sector);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector, __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_plug,
|
|
|
|
TP_PROTO(struct request_queue *q),
|
|
|
|
TP_ARGS(q),
|
|
|
|
TP_STRUCT__entry(
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("[%s]", __entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_unplug_timer,
|
|
|
|
TP_PROTO(struct request_queue *q),
|
|
|
|
TP_ARGS(q),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( int, nr_rq )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->nr_rq = q->rq.count[READ] + q->rq.count[WRITE];
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
|
|
);
|
|
|
|
TRACE_EVENT(block_unplug_io,
|
|
|
|
TP_PROTO(struct request_queue *q),
|
|
|
|
TP_ARGS(q),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( int, nr_rq )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->nr_rq = q->rq.count[READ] + q->rq.count[WRITE];
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("[%s] %d", __entry->comm, __entry->nr_rq)
|
|
);
|
|
|
|
TRACE_EVENT(block_split,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio,
|
|
unsigned int new_sector),
|
|
|
|
TP_ARGS(q, bio, new_sector),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( sector_t, new_sector )
|
|
__array( char, rwbs, 6 )
|
|
__array( char, comm, TASK_COMM_LEN )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->new_sector = new_sector;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu / %llu [%s]",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
(unsigned long long)__entry->new_sector,
|
|
__entry->comm)
|
|
);
|
|
|
|
TRACE_EVENT(block_remap,
|
|
|
|
TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
|
|
sector_t from),
|
|
|
|
TP_ARGS(q, bio, dev, from),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( dev_t, dev )
|
|
__field( sector_t, sector )
|
|
__field( unsigned int, nr_sector )
|
|
__field( dev_t, old_dev )
|
|
__field( sector_t, old_sector )
|
|
__array( char, rwbs, 6 )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->dev = bio->bi_bdev->bd_dev;
|
|
__entry->sector = bio->bi_sector;
|
|
__entry->nr_sector = bio->bi_size >> 9;
|
|
__entry->old_dev = dev;
|
|
__entry->old_sector = from;
|
|
blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_size);
|
|
),
|
|
|
|
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
|
|
MAJOR(__entry->dev), MINOR(__entry->dev), __entry->rwbs,
|
|
(unsigned long long)__entry->sector,
|
|
__entry->nr_sector,
|
|
MAJOR(__entry->old_dev), MINOR(__entry->old_dev),
|
|
(unsigned long long)__entry->old_sector)
|
|
);
|
|
|
|
#endif /* _TRACE_BLOCK_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|
|
|