================================================================== BUG: KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath write to 0xffff888103101770 of 8 bytes by task 15865 on cpu 0: mem_cgroup_track_foreign_dirty_slowpath+0x3b3/0x440 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1695 [inline] folio_account_dirtied mm/page-writeback.c:2705 [inline] __folio_mark_dirty+0x3f5/0x4e0 mm/page-writeback.c:2748 mark_buffer_dirty+0x148/0x250 fs/buffer.c:1207 __block_commit_write fs/buffer.c:2200 [inline] block_write_end+0x158/0x2e0 fs/buffer.c:2276 ext4_da_do_write_end fs/ext4/inode.c:2952 [inline] ext4_da_write_end+0x1ad/0x860 fs/ext4/inode.c:3025 generic_perform_write+0x276/0x410 mm/filemap.c:4026 ext4_buffered_write_iter+0x1f6/0x380 fs/ext4/file.c:299 ext4_file_write_iter+0x29f/0xe30 __kernel_write_iter+0x24f/0x4d0 fs/read_write.c:523 dump_emit_page fs/coredump.c:893 [inline] dump_user_range+0x3a7/0x550 fs/coredump.c:954 elf_core_dump+0x1aeb/0x1c30 fs/binfmt_elf.c:2083 do_coredump+0xff6/0x1860 fs/coredump.c:767 get_signal+0xdc1/0x1080 kernel/signal.c:2894 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] irqentry_exit_to_user_mode+0x94/0x130 kernel/entry/common.c:231 irqentry_exit+0x12/0x50 kernel/entry/common.c:334 exc_general_protection+0x33d/0x4d0 arch/x86/kernel/traps.c:644 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:617 read to 0xffff888103101770 of 8 bytes by task 14696 on cpu 1: mem_cgroup_track_foreign_dirty_slowpath+0x2fc/0x440 mm/memcontrol.c:5111 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1695 [inline] folio_account_dirtied mm/page-writeback.c:2705 [inline] __folio_mark_dirty+0x3f5/0x4e0 mm/page-writeback.c:2748 mark_buffer_dirty+0x148/0x250 fs/buffer.c:1207 __block_commit_write fs/buffer.c:2200 [inline] block_write_end+0x158/0x2e0 fs/buffer.c:2276 ext4_da_do_write_end fs/ext4/inode.c:2952 [inline] ext4_da_write_end+0x1ad/0x860 fs/ext4/inode.c:3025 generic_perform_write+0x276/0x410 mm/filemap.c:4026 ext4_buffered_write_iter+0x1f6/0x380 fs/ext4/file.c:299 ext4_file_write_iter+0x29f/0xe30 __kernel_write_iter+0x24f/0x4d0 fs/read_write.c:523 dump_emit_page fs/coredump.c:893 [inline] dump_user_range+0x3a7/0x550 fs/coredump.c:954 elf_core_dump+0x1aeb/0x1c30 fs/binfmt_elf.c:2083 do_coredump+0xff6/0x1860 fs/coredump.c:767 get_signal+0xdc1/0x1080 kernel/signal.c:2894 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] irqentry_exit_to_user_mode+0x94/0x130 kernel/entry/common.c:231 irqentry_exit+0x12/0x50 kernel/entry/common.c:334 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x0000000100001d66 -> 0x0000000100001dce Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14696 Comm: syz.4.3102 Tainted: G W 6.10.0-rc5-syzkaller-00155-g66e55ff12e73 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================