================================================================== BUG: KCSAN: data-race in do_try_to_free_pages / shrink_node read to 0xffff8880b78a7878 of 8 bytes by task 6587 on cpu 1: shrink_node+0x9c5/0xfe0 mm/vmscan.c:2733 shrink_zones mm/vmscan.c:2996 [inline] do_try_to_free_pages+0x245/0xb60 mm/vmscan.c:3049 try_to_free_mem_cgroup_pages+0x205/0x4d0 mm/vmscan.c:3371 reclaim_high.constprop.0+0xf7/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x96/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20c/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode+0x1a6/0x1d0 arch/x86/entry/common.c:195 swapgs_restore_regs_and_return_to_usermode+0x0/0x40 write to 0xffff8880b78a7878 of 8 bytes by task 7927 on cpu 0: snapshot_refaults mm/vmscan.c:3013 [inline] do_try_to_free_pages+0x75f/0xb60 mm/vmscan.c:3072 try_to_free_mem_cgroup_pages+0x205/0x4d0 mm/vmscan.c:3371 reclaim_high.constprop.0+0xf7/0x140 mm/memcontrol.c:2232 mem_cgroup_handle_over_high+0x96/0x180 mm/memcontrol.c:2313 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_usermode_loop+0x20c/0x2c0 arch/x86/entry/common.c:164 prepare_exit_to_usermode+0x1a6/0x1d0 arch/x86/entry/common.c:195 swapgs_restore_regs_and_return_to_usermode+0x0/0x40 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7927 Comm: syz-executor.4 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================