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[syzbot] [fs?] [mm?] KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath (7) | 0 (1) | 2025/04/01 09:40 |
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[syzbot] [fs?] [mm?] KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath (7) | 0 (1) | 2025/04/01 09:40 |
================================================================== BUG: KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath write to 0xffff8881075cc558 of 8 bytes by task 4713 on cpu 0: mem_cgroup_track_foreign_dirty_slowpath+0x3bf/0x450 mm/memcontrol.c:-1 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1585 [inline] folio_account_dirtied mm/page-writeback.c:2725 [inline] __folio_mark_dirty+0x3f8/0x4e0 mm/page-writeback.c:2766 mark_buffer_dirty+0x134/0x230 fs/buffer.c:1196 block_commit_write fs/buffer.c:2189 [inline] block_page_mkwrite+0x295/0x3f0 fs/buffer.c:2615 ext4_page_mkwrite+0x756/0xb90 fs/ext4/inode.c:6242 do_page_mkwrite mm/memory.c:3287 [inline] wp_page_shared mm/memory.c:3688 [inline] do_wp_page+0xe86/0x24e0 mm/memory.c:3907 handle_pte_fault mm/memory.c:6013 [inline] __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0xc6c/0x2e80 mm/memory.c:6309 do_user_addr_fault arch/x86/mm/fault.c:1337 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x3b9/0x6a0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 read to 0xffff8881075cc558 of 8 bytes by task 4741 on cpu 1: mem_cgroup_track_foreign_dirty_slowpath+0xdb/0x450 mm/memcontrol.c:3349 mem_cgroup_track_foreign_dirty include/linux/memcontrol.h:1585 [inline] folio_account_dirtied mm/page-writeback.c:2725 [inline] __folio_mark_dirty+0x3f8/0x4e0 mm/page-writeback.c:2766 mark_buffer_dirty+0x134/0x230 fs/buffer.c:1196 block_commit_write fs/buffer.c:2189 [inline] block_write_end+0x123/0x210 fs/buffer.c:2266 ext4_write_end+0x148/0x770 fs/ext4/inode.c:1309 generic_perform_write+0x31e/0x4b0 mm/filemap.c:4123 ext4_buffered_write_iter+0x1ed/0x3c0 fs/ext4/file.c:299 ext4_file_write_iter+0x3b2/0xf80 include/linux/fs.h:-1 iter_file_splice_write+0x5f2/0x980 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x160/0x2c0 fs/splice.c:1158 splice_direct_to_actor+0x305/0x680 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0xd9/0x150 fs/splice.c:1227 do_sendfile+0x40a/0x690 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64 fs/read_write.c:1415 [inline] __x64_sys_sendfile64+0x113/0x160 fs/read_write.c:1415 x64_sys_call+0xfc3/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:41 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000ffff9f88 -> 0x00000000ffffa5c4 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 4741 Comm: syz.3.195 Not tainted 6.15.0-rc2-syzkaller-00037-g834a4a689699 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/04/15 15:56 | upstream | 834a4a689699 | 23b969b7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath | ||
2025/04/01 04:33 | upstream | 1e7857b28020 | 36d76a97 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mem_cgroup_track_foreign_dirty_slowpath / mem_cgroup_track_foreign_dirty_slowpath |