syzbot |
sign-in | mailing list | source | docs |
EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. ================================================================== BUG: KCSAN: data-race in mlock_new_folio / need_mlock_drain read-write to 0xffff888237d29f28 of 1 bytes by task 2425 on cpu 1: folio_batch_add include/linux/pagevec.h:74 [inline] mlock_new_folio+0x109/0x1f0 mm/mlock.c:281 folio_add_lru_vma+0x14d/0x160 mm/swap.c:535 do_anonymous_page mm/memory.c:4152 [inline] do_pte_missing mm/memory.c:3667 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x1cb7/0x2cc0 mm/memory.c:5284 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x402/0xe40 mm/gup.c:1239 populate_vma_page_range mm/gup.c:1666 [inline] __mm_populate+0x216/0x330 mm/gup.c:1775 mm_populate include/linux/mm.h:3305 [inline] __do_sys_mlockall mm/mlock.c:729 [inline] __se_sys_mlockall+0x28d/0x320 mm/mlock.c:705 __x64_sys_mlockall+0x1f/0x30 mm/mlock.c:705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d29f28 of 1 bytes by task 3087 on cpu 0: folio_batch_count include/linux/pagevec.h:53 [inline] need_mlock_drain+0x30/0x50 mm/mlock.c:236 cpu_needs_drain mm/swap.c:801 [inline] __lru_add_drain_all+0x240/0x420 mm/swap.c:889 lru_add_drain_all+0x10/0x20 mm/swap.c:905 invalidate_bdev+0x54/0x70 block/bdev.c:86 ext4_put_super+0x51b/0x7d0 fs/ext4/super.c:1353 generic_shutdown_super+0xdb/0x210 fs/super.c:693 kill_block_super+0x2a/0x60 fs/super.c:1646 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7305 deactivate_locked_super+0x73/0x1c0 fs/super.c:481 deactivate_super+0x9b/0xb0 fs/super.c:514 cleanup_mnt+0x272/0x2e0 fs/namespace.c:1254 __cleanup_mnt+0x19/0x20 fs/namespace.c:1261 task_work_run+0x135/0x1a0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd6/0xe0 kernel/entry/common.c:171 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00 -> 0x06 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3087 Comm: syz-executor.3 Not tainted 6.6.0-rc4-syzkaller-00029-gcbf3a2cb156a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ================================================================== EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/10/04 14:03 | upstream | cbf3a2cb156a | b7d7ff54 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mlock_new_folio / need_mlock_drain | ||
2023/09/10 12:14 | upstream | 535a265d7f0d | 6654cf89 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in mlock_new_folio / need_mlock_drain |