forked from luck/tmp_suning_uos_patched
ea07b862ac
Several people report seeing warnings about inconsistent radix tree nodes followed by crashes in the workingset code, which all looked like use-after-free access from the shadow node shrinker. Dave Jones managed to reproduce the issue with a debug patch applied, which confirmed that the radix tree shrinking indeed frees shadow nodes while they are still linked to the shadow LRU: WARNING: CPU: 2 PID: 53 at lib/radix-tree.c:643 delete_node+0x1e4/0x200 CPU: 2 PID: 53 Comm: kswapd0 Not tainted 4.10.0-rc2-think+ #3 Call Trace: delete_node+0x1e4/0x200 __radix_tree_delete_node+0xd/0x10 shadow_lru_isolate+0xe6/0x220 __list_lru_walk_one.isra.4+0x9b/0x190 list_lru_walk_one+0x23/0x30 scan_shadow_nodes+0x2e/0x40 shrink_slab.part.44+0x23d/0x5d0 shrink_node+0x22c/0x330 kswapd+0x392/0x8f0 This is the WARN_ON_ONCE(!list_empty(&node->private_list)) placed in the inlined radix_tree_shrink(). The problem is with |
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| fonts | ||
| lz4 | ||
| lzo | ||
| mpi | ||
| raid6 | ||
| reed_solomon | ||
| xz | ||
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| .gitignore | ||
| argv_split.c | ||
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| Kconfig | ||
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| locking-selftest-wlock-hardirq.h | ||
| locking-selftest-wlock-softirq.h | ||
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| Makefile | ||
| md5.c | ||
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| net_utils.c | ||
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| radix-tree.c | ||
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| test_hexdump.c | ||
| test_kasan.c | ||
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| test-kstrtox.c | ||
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| textsearch.c | ||
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| uuid.c | ||
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