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================================================================== BUG: KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn read-write to 0xffffffff86ea097c of 4 bytes by task 1913 on cpu 1: pcpu_update_empty_pages mm/percpu.c:606 [inline] pcpu_chunk_populated mm/percpu.c:1534 [inline] pcpu_balance_populated mm/percpu.c:2095 [inline] pcpu_balance_workfn+0xb27/0xce0 mm/percpu.c:2246 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289 worker_thread+0x618/0xa70 kernel/workqueue.c:2436 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 read to 0xffffffff86ea097c of 4 bytes by task 13129 on cpu 0: pcpu_alloc+0x9cb/0x1020 mm/percpu.c:1877 __alloc_percpu_gfp+0x22/0x30 mm/percpu.c:1937 bpf_map_alloc_percpu+0xab/0x120 kernel/bpf/syscall.c:462 prealloc_init kernel/bpf/hashtab.c:346 [inline] htab_map_alloc+0x76e/0xc00 kernel/bpf/hashtab.c:558 find_and_alloc_map kernel/bpf/syscall.c:131 [inline] map_create+0x38a/0x710 kernel/bpf/syscall.c:1082 __sys_bpf+0x296/0x630 kernel/bpf/syscall.c:4899 __do_sys_bpf kernel/bpf/syscall.c:5021 [inline] __se_sys_bpf kernel/bpf/syscall.c:5019 [inline] __x64_sys_bpf+0x3f/0x50 kernel/bpf/syscall.c:5019 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0x00000001 -> 0x00000004 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13129 Comm: syz-executor.0 Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9-dirty #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/06/03 11:29 | upstream | 50fd82b3a9a9 | eee80d3c | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/05/26 21:52 | upstream | 16477cdfefdb | 3037caa9 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/05/07 14:53 | upstream | 4b97bac0756a | e60b1103 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/05/03 19:22 | upstream | ef8e4d3c2ab1 | dc9e5259 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/04/09 10:52 | upstream | f1b45d8ccb98 | e22c3da3 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/04/08 18:27 | upstream | 1831fed55973 | e22c3da3 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/03/29 10:41 | upstream | 1930a6e739c4 | 6bdac766 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/03/05 17:24 | upstream | ac84e82f78cb | 7bdd8b2c | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/02/08 13:58 | upstream | 555f3d7be91a | 0b33604d | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/02/01 21:36 | upstream | 9f7fb8de5d9b | c1c1631d | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2022/01/14 17:46 | upstream | 871bfa02d08d | 53e00b45 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn | |||
2021/12/15 00:18 | upstream | 5472f14a3742 | f752fb53 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in pcpu_alloc / pcpu_balance_workfn |