================================================================== BUG: KCSAN: data-race in drain_all_stock / drain_stock write to 0xffff888237c2a990 of 4 bytes by task 11394 on cpu 0: drain_stock+0x48/0xf0 mm/memcontrol.c:2340 __refill_stock+0x33/0xb0 mm/memcontrol.c:2380 refill_stock mm/memcontrol.c:2395 [inline] try_charge_memcg+0x9eb/0xd20 mm/memcontrol.c:2846 obj_cgroup_charge_pages+0xbd/0x1c0 mm/memcontrol.c:3275 obj_cgroup_charge+0xec/0x140 mm/memcontrol.c:3566 __memcg_slab_pre_alloc_hook+0xe3/0x120 mm/slub.c:1929 memcg_slab_pre_alloc_hook mm/slub.c:1950 [inline] slab_pre_alloc_hook mm/slub.c:3766 [inline] slab_alloc_node mm/slub.c:3842 [inline] kmem_cache_alloc_lru+0x19c/0x2e0 mm/slub.c:3879 alloc_inode_sb include/linux/fs.h:3019 [inline] sock_alloc_inode+0x34/0xa0 net/socket.c:308 alloc_inode+0x38/0x150 fs/inode.c:260 new_inode_pseudo+0x17/0x70 fs/inode.c:1005 sock_alloc net/socket.c:634 [inline] __sock_create+0x12b/0x4e0 net/socket.c:1535 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0xad/0x230 net/socket.c:1706 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __x64_sys_socket+0x3f/0x50 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237c2a990 of 4 bytes by task 11139 on cpu 1: drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2425 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2770 try_charge mm/memcontrol.c:2904 [inline] charge_memcg mm/memcontrol.c:7241 [inline] __mem_cgroup_charge+0x63/0xf0 mm/memcontrol.c:7256 mem_cgroup_charge include/linux/memcontrol.h:690 [inline] folio_prealloc mm/memory.c:1011 [inline] wp_page_copy mm/memory.c:3138 [inline] do_wp_page+0x63a/0x1f20 mm/memory.c:3525 handle_pte_fault mm/memory.c:5160 [inline] __handle_mm_fault mm/memory.c:5285 [inline] handle_mm_fault+0xb80/0x27b0 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x3ff/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x00000031 -> 0x00000040 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11139 Comm: syz-executor.5 Not tainted 6.7.0-syzkaller-11091-g296455ade1fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ================================================================== syz-executor.5 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 CPU: 1 PID: 11139 Comm: syz-executor.5 Not tainted 6.7.0-syzkaller-11091-g296455ade1fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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:461 oom_kill_process+0x33a/0x4c0 mm/oom_kill.c:1032 out_of_memory+0x9ca/0xbf0 mm/oom_kill.c:1170 mem_cgroup_out_of_memory+0x139/0x190 mm/memcontrol.c:1811 mem_cgroup_oom mm/memcontrol.c:2041 [inline] try_charge_memcg+0x759/0xd20 mm/memcontrol.c:2810 try_charge mm/memcontrol.c:2904 [inline] charge_memcg mm/memcontrol.c:7241 [inline] mem_cgroup_swapin_charge_folio+0x107/0x190 mm/memcontrol.c:7326 __read_swap_cache_async+0x2b9/0x510 mm/swap_state.c:498 swap_cluster_readahead+0x380/0x3f0 mm/swap_state.c:681 swapin_readahead+0xe2/0x7a0 mm/swap_state.c:886 do_swap_page+0x44c/0x1570 mm/memory.c:3898 handle_pte_fault mm/memory.c:5147 [inline] __handle_mm_fault mm/memory.c:5285 [inline] handle_mm_fault+0x7f6/0x27b0 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x3ff/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f399c301ac7 Code: 25 ff 0f 00 00 09 c5 80 3d 06 cc c9 00 00 0f 85 6f ff ff ff 44 0f b6 6c 24 0f 44 8d 55 04 89 e8 41 89 c1 41 81 e1 ff 1f 00 00 <43> 8b 14 8e 39 d5 0f 84 5e ff ff ff 85 d2 0f 84 65 01 00 00 83 c0 RSP: 002b:00007ffc2bc52480 EFLAGS: 00010202 RAX: 0000000081572b0d RBX: 00007f399c475018 RCX: 0000000000000080 RDX: ffffffff8157267e RSI: 0000000080000000 RDI: 00000000000083ff RBP: 0000000081572b0d R08: 0000001b2c320000 R09: 0000000000000b0d R10: 0000000081572b11 R11: 0000000000000246 R12: 0000000000000080 R13: 0000000000000001 R14: 00007f399c469000 R15: ffffffff8157267e memory: usage 307200kB, limit 307200kB, failcnt 751098 memory+swap: usage 308676kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307156kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz5: cache 0 rss 32768 shmem 0 mapped_file 0 dirty 0 writeback 0 workingset_refault_anon 490592 workingset_refault_file 7 swap 1511424 swapcached 40960 pgpgin 1122636 pgpgout 1122626 pgfault 1537795 pgmajfault 345804 inactive_anon 20480 active_anon 12288 inactive_file 0 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 0 total_rss 32768 total_shmem 0 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 490592 total_workingset_refault_file 7 total_swap 1511424 total_swapcached 40960 total_pgpgin 1122636 total_pgpgout 1122626 total_pgfault 1537795 total_pgmajfault 345804 total_inactive_anon 20480 total_active_anon 12288 total_inactive_file 0 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz5,mems_allowed=0,oom_memcg=/syz5,task_memcg=/syz5,task=syz-executor.5,pid=11139,uid=0 Memory cgroup out of memory: Killed process 11139 (syz-executor.5) total-vm:46308kB, anon-rss:380kB, file-rss:8832kB, shmem-rss:0kB, UID:0 pgtables:76kB oom_score_adj:1000