12:47 a.m.
tree:
https://github.com/0day-ci/linux/commits/UPDATE-20220111-073805/trondmy-k...
head: f1c8b8b2e616895aa0f5be4e53d4cd1ffa751001
commit: f1c8b8b2e616895aa0f5be4e53d4cd1ffa751001 iomap: Address soft lockup in
iomap_finish_ioend()
date: 3 days ago
config: arm-randconfig-m031-20220113
(https://download.01.org/0day-ci/archive/20220113/202201132101.AoT0bCj5-lk...)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
New smatch warnings:
fs/iomap/buffered-io.c:1098 iomap_finish_ioends() warn: inconsistent indenting
fs/iomap/buffered-io.c:1330 iomap_add_to_ioend() warn: inconsistent indenting
Old smatch warnings:
fs/iomap/buffered-io.c:1434 iomap_writepage_map() warn: inconsistent indenting
vim +1098 fs/iomap/buffered-io.c
1072
1073 /*
1074 * Ioend completion routine for merged bios. This can only be called from task
1075 * contexts as merged ioends can be of unbound length. Hence we have to break up
1076 * the page writeback completion into manageable chunks to avoid long scheduler
1077 * holdoffs. We aim to keep scheduler holdoffs down below 10ms so that we get
1078 * good batch processing throughput without creating adverse scheduler latency
1079 * conditions.
1080 */
1081 void
1082 iomap_finish_ioends(struct iomap_ioend *ioend, int error)
1083 {
1084 struct list_head tmp;
1085 u32 pages;
1086
1087 might_sleep();
1088
1089 list_replace_init(&ioend->io_list, &tmp);
1090 pages = iomap_finish_ioend(ioend, error);
1091
1092 while (!list_empty(&tmp)) {
1093 trace_printk("pages %u, start sector 0x%llx size %lu pcnt %u",
1094 ioend->io_pages,
1095 ioend->io_sector,
1096 ioend->io_size,
1097 pages);
1098 if (pages > 32768) {
1099 cond_resched();
1100 pages = 0;
1101 }
1102 ioend = list_first_entry(&tmp, struct iomap_ioend, io_list);
1103 list_del_init(&ioend->io_list);
1104 pages += iomap_finish_ioend(ioend, error);
1105 }
1106 trace_printk("pages %u, start sector 0x%llx size %lu pcnt %u",
1107 ioend->io_pages,
1108 ioend->io_sector,
1109 ioend->io_size,
1110 pages);
1111 }
1112 EXPORT_SYMBOL_GPL(iomap_finish_ioends);
1113
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org