================================================================== BUG: KCSAN: data-race in drain_all_stock / drain_stock write to 0xffff888237d2a3c0 of 4 bytes by task 28928 on cpu 1: drain_stock+0x48/0xf0 mm/memcontrol.c:2320 __refill_stock+0x33/0xb0 mm/memcontrol.c:2360 refill_stock mm/memcontrol.c:2375 [inline] try_charge_memcg+0x9ee/0xd30 mm/memcontrol.c:2826 try_charge mm/memcontrol.c:2884 [inline] charge_memcg mm/memcontrol.c:7210 [inline] __mem_cgroup_charge+0x63/0xf0 mm/memcontrol.c:7225 mem_cgroup_charge include/linux/memcontrol.h:684 [inline] wp_page_copy mm/memory.c:3143 [inline] do_wp_page+0x9d4/0x1f40 mm/memory.c:3510 handle_pte_fault mm/memory.c:5054 [inline] __handle_mm_fault mm/memory.c:5179 [inline] handle_mm_fault+0xe5d/0x2dd0 mm/memory.c:5344 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3ff/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffff888237d2a3c0 of 4 bytes by task 28993 on cpu 0: drain_all_stock+0xd3/0x2d0 mm/memcontrol.c:2405 try_charge_memcg+0x6c5/0xd30 mm/memcontrol.c:2750 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3255 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3281 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4585 alloc_pages_mpol+0xb1/0x1d0 mm/mempolicy.c:2133 alloc_pages+0xe0/0x100 mm/mempolicy.c:2204 pagetable_alloc include/linux/mm.h:2830 [inline] __pte_alloc_one include/asm-generic/pgalloc.h:68 [inline] pte_alloc_one+0x32/0xe0 arch/x86/mm/pgtable.c:33 do_fault_around mm/memory.c:4580 [inline] do_read_fault mm/memory.c:4619 [inline] do_fault mm/memory.c:4762 [inline] do_pte_missing mm/memory.c:3730 [inline] handle_pte_fault mm/memory.c:5038 [inline] __handle_mm_fault mm/memory.c:5179 [inline] handle_mm_fault+0x11d6/0x2dd0 mm/memory.c:5344 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3ff/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x00000008 -> 0x0000003d Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 28993 Comm: syz-executor.2 Not tainted 6.7.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ================================================================== syz-executor.2 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 CPU: 1 PID: 28993 Comm: syz-executor.2 Not tainted 6.7.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xda/0x130 lib/dump_stack.c:106 dump_stack+0x15/0x20 lib/dump_stack.c:113 dump_header+0x82/0x2d0 mm/oom_kill.c:460 oom_kill_process+0x33a/0x4c0 mm/oom_kill.c:1031 out_of_memory+0x9ca/0xbf0 mm/oom_kill.c:1169 mem_cgroup_out_of_memory+0x139/0x190 mm/memcontrol.c:1791 mem_cgroup_oom mm/memcontrol.c:2021 [inline] try_charge_memcg+0x75c/0xd30 mm/memcontrol.c:2790 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3255 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3281 memcg_kmem_charge_page include/linux/memcontrol.h:1826 [inline] memcg_charge_kernel_stack+0x146/0x210 kernel/fork.c:260 alloc_thread_stack_node kernel/fork.c:294 [inline] dup_task_struct+0x125/0x480 kernel/fork.c:1118 copy_process+0x3a6/0x20a0 kernel/fork.c:2332 kernel_clone+0x169/0x560 kernel/fork.c:2907 __do_sys_clone3 kernel/fork.c:3208 [inline] __se_sys_clone3+0x1b5/0x1f0 kernel/fork.c:3192 __x64_sys_clone3+0x31/0x40 kernel/fork.c:3192 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f46dcfdc8d9 Code: ff ff eb d2 e8 f8 62 fd ff 0f 1f 84 00 00 00 00 00 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7 RSP: 002b:00007ffde96fbd98 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f46dcf84fb0 RCX: 00007f46dcfdc8d9 RDX: 00007f46dcf84fb0 RSI: 0000000000000058 RDI: 00007ffde96fbde0 RBP: 00007f46dc3336c0 R08: 00007f46dc3336c0 R09: 00007ffde96fbec7 R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffde96fbde0 R15: 00007ffde96fbec8 memory: usage 307200kB, limit 307200kB, failcnt 529597 memory+swap: usage 307788kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307184kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache 0 rss 12288 shmem 0 mapped_file 0 dirty 0 writeback 0 workingset_refault_anon 327551 workingset_refault_file 65 swap 602112 swapcached 12288 pgpgin 673881 pgpgout 673878 pgfault 1270328 pgmajfault 220100 inactive_anon 8192 active_anon 0 inactive_file 0 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 0 total_rss 12288 total_shmem 0 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 327551 total_workingset_refault_file 65 total_swap 602112 total_swapcached 12288 total_pgpgin 673881 total_pgpgout 673878 total_pgfault 1270328 total_pgmajfault 220100 total_inactive_anon 8192 total_active_anon 0 total_inactive_file 0 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz2,mems_allowed=0,oom_memcg=/syz2,task_memcg=/syz2,task=syz-executor.2,pid=28993,uid=0 Memory cgroup out of memory: Killed process 28993 (syz-executor.2) total-vm:42456kB, anon-rss:376kB, file-rss:8832kB, shmem-rss:0kB, UID:0 pgtables:76kB oom_score_adj:1000