On 5/6/21 3:36 PM, Marco Rebhan wrote: > On Thursday, 6 May 2021 04:50:06 CEST Coly Li wrote: >> Could you please try the attached patch ? If a suspicious bio >> allocation happens, this patch will print out a warning kernel message >> and avoid the BUG() panic. > > Looks like the patch works. Here's a dmesg log that comes from starting > up a game with a bunch of large files (which I'm guessing are what > makes this happen more often?) > Before 5.12, the allocation failure returns a NULL pointer, so such issue was hidden. I will post a quick fix to emulate previous code logic without bothering bio_alloc_bioset(). Thanks for the quick test and verification. Coly Li > [ 39.284230] bcache: cached_dev_cache_miss() inserting bio is too large: 344 iovecs, not intsert. > [ 65.415896] bcache: cached_dev_cache_miss() inserting bio is too large: 282 iovecs, not intsert. > [ 65.446327] bcache: cached_dev_cache_miss() inserting bio is too large: 946 iovecs, not intsert. > [ 88.116826] bcache: cached_dev_cache_miss() inserting bio is too large: 342 iovecs, not intsert. > [ 88.957691] bcache: cached_dev_cache_miss() inserting bio is too large: 342 iovecs, not intsert. > [ 89.020544] bcache: cached_dev_cache_miss() inserting bio is too large: 332 iovecs, not intsert. > [ 90.531875] bcache: cached_dev_cache_miss() inserting bio is too large: 261 iovecs, not intsert. > [ 111.464124] bcache: cached_dev_cache_miss() inserting bio is too large: 342 iovecs, not intsert. > [ 111.497049] bcache: cached_dev_cache_miss() inserting bio is too large: 262 iovecs, not intsert. > [ 111.638928] bcache: cached_dev_cache_miss() inserting bio is too large: 318 iovecs, not intsert. > [ 155.884142] bcache: cached_dev_cache_miss() inserting bio is too large: 447 iovecs, not intsert. > [ 156.146070] bcache: cached_dev_cache_miss() inserting bio is too large: 512 iovecs, not intsert. > [ 156.223795] bcache: cached_dev_cache_miss() inserting bio is too large: 277 iovecs, not intsert. > [ 156.326145] bcache: cached_dev_cache_miss() inserting bio is too large: 342 iovecs, not intsert. > [ 156.602906] bcache: cached_dev_cache_miss() inserting bio is too large: 290 iovecs, not intsert. > [ 156.646365] bcache: cached_dev_cache_miss() inserting bio is too large: 341 iovecs, not intsert. > [ 156.671285] bcache: cached_dev_cache_miss() inserting bio is too large: 501 iovecs, not intsert. > [ 157.216087] bcache: cached_dev_cache_miss() inserting bio is too large: 258 iovecs, not intsert. > [ 165.010961] bcache: cached_dev_cache_miss() inserting bio is too large: 413 iovecs, not intsert. > [ 165.386483] bcache: cached_dev_cache_miss() inserting bio is too large: 260 iovecs, not intsert. > > Thanks, > Marco >
