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[syzbot] [mm?] KCSAN: data-race in folios_put_refs / need_mlock_drain (2) | 0 (1) | 2024/11/04 11:35 |
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[syzbot] [mm?] KCSAN: data-race in folios_put_refs / need_mlock_drain (2) | 0 (1) | 2024/11/04 11:35 |
EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. ================================================================== BUG: KCSAN: data-race in folios_put_refs / need_mlock_drain write to 0xffff888237c2b4a0 of 1 bytes by task 24420 on cpu 0: folio_batch_reinit include/linux/pagevec.h:50 [inline] folios_put_refs+0x26d/0x2b0 mm/swap.c:956 folios_put include/linux/mm.h:1547 [inline] mlock_folio_batch+0x3255/0x3280 mm/mlock.c:209 munlock_folio+0xcd/0x130 mm/mlock.c:303 munlock_vma_folio mm/internal.h:944 [inline] __folio_remove_rmap mm/rmap.c:1603 [inline] folio_remove_rmap_ptes+0x18f/0x1a0 mm/rmap.c:1620 zap_present_folio_ptes mm/memory.c:1526 [inline] zap_present_ptes mm/memory.c:1585 [inline] zap_pte_range mm/memory.c:1627 [inline] zap_pmd_range mm/memory.c:1753 [inline] zap_pud_range mm/memory.c:1782 [inline] zap_p4d_range mm/memory.c:1803 [inline] unmap_page_range+0x10f3/0x2380 mm/memory.c:1824 unmap_single_vma+0x142/0x1d0 mm/memory.c:1870 unmap_vmas+0x18d/0x2b0 mm/memory.c:1914 exit_mmap+0x18a/0x680 mm/mmap.c:1667 __mmput+0x28/0x1d0 kernel/fork.c:1353 mmput+0x4c/0x60 kernel/fork.c:1375 exit_mm+0xe4/0x190 kernel/exit.c:570 do_exit+0x55e/0x17f0 kernel/exit.c:925 do_group_exit+0x102/0x150 kernel/exit.c:1087 get_signal+0xeb9/0x1000 kernel/signal.c:3017 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x62/0x120 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888237c2b4a0 of 1 bytes by task 17885 on cpu 1: folio_batch_count include/linux/pagevec.h:56 [inline] need_mlock_drain+0x30/0x50 mm/mlock.c:235 cpu_needs_drain mm/swap.c:747 [inline] __lru_add_drain_all+0x22a/0x3f0 mm/swap.c:835 lru_add_drain_all+0x10/0x20 mm/swap.c:851 invalidate_bdev+0x47/0x70 block/bdev.c:101 ext4_put_super+0x571/0x840 fs/ext4/super.c:1356 generic_shutdown_super+0xe5/0x220 fs/super.c:642 kill_block_super+0x2a/0x70 fs/super.c:1710 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7379 deactivate_locked_super+0x7d/0x1c0 fs/super.c:473 deactivate_super+0x9f/0xb0 fs/super.c:506 cleanup_mnt+0x268/0x2e0 fs/namespace.c:1373 __cleanup_mnt+0x19/0x20 fs/namespace.c:1380 task_work_run+0x13a/0x1a0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xa8/0x120 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x1f -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 17885 Comm: syz-executor Tainted: G W 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/12/03 10:29 | upstream | cdd30ebb1b9f | 578925bc | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in folios_put_refs / need_mlock_drain | ||
2024/11/25 13:20 | upstream | 9f16d5e6f220 | 68da6d95 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in folios_put_refs / need_mlock_drain | ||
2024/11/23 18:46 | upstream | 06afb0f36106 | 68da6d95 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in folios_put_refs / need_mlock_drain | ||
2024/11/12 11:54 | upstream | 2d5404caa8c7 | 75bb1b32 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in folios_put_refs / need_mlock_drain | ||
2024/11/03 19:44 | upstream | a33ab3f94f51 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in folios_put_refs / need_mlock_drain |