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================================================================== BUG: KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn write to 0xffffffff88f3cccc of 4 bytes by task 9691 on cpu 1: pcpu_update_empty_pages mm/percpu.c:559 [inline] pcpu_chunk_populated mm/percpu.c:1493 [inline] __pcpu_balance_workfn mm/percpu.c:2033 [inline] pcpu_balance_workfn+0xc7c/0xe40 mm/percpu.c:2069 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffffffff88f3cccc of 4 bytes by task 5950 on cpu 0: pcpu_alloc+0xaed/0x1090 mm/percpu.c:1835 __alloc_percpu_gfp+0x22/0x30 mm/percpu.c:1894 bpf_map_alloc_percpu+0xab/0x120 kernel/bpf/syscall.c:435 prealloc_init kernel/bpf/hashtab.c:296 [inline] htab_map_alloc+0x814/0xc80 kernel/bpf/hashtab.c:508 find_and_alloc_map kernel/bpf/syscall.c:122 [inline] map_create kernel/bpf/syscall.c:828 [inline] __do_sys_bpf+0x420c/0x99c0 kernel/bpf/syscall.c:4375 __se_sys_bpf kernel/bpf/syscall.c:4351 [inline] __x64_sys_bpf+0x3d/0x50 kernel/bpf/syscall.c:4351 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5950 Comm: syz-executor.0 Tainted: G W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/04/05 19:51 | upstream | 0a50438c8436 | 6a81331a | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/03/23 15:54 | upstream | 84196390620a | e613994b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/03/21 23:10 | upstream | 5ee96fa9dd78 | 4c9a64da | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/03/19 21:10 | upstream | 8b12a62a4e3e | 3d01c4de | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/03/07 09:11 | upstream | a38fd8748464 | c599ed12 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/02/07 21:54 | upstream | b75dba7f472c | 2ce644fc | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/02/06 23:50 | upstream | 964d069f93c4 | 0655e081 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/02/03 20:33 | upstream | 3afe9076a7c1 | 624dad51 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/01/24 20:12 | upstream | e68061375f79 | 52e37319 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/01/22 19:44 | upstream | 83d09ad4b950 | 52e37319 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2020/12/29 13:28 | upstream | dea8dcf2a9fa | 80910769 | .config | console log | report | info | ci2-upstream-kcsan-gce | ||||
2020/12/29 12:25 | upstream | dea8dcf2a9fa | 8259d56c | .config | console log | report | info | ci2-upstream-kcsan-gce |