On 2020/6/20 15:58, Yu Changchun wrote: > This patch is to fix a crash: > > #3 [ffffb6580689f898] oops_end at ffffffffa2835bc2 > #4 [ffffb6580689f8b8] no_context at ffffffffa28766e7 > #5 [ffffb6580689f920] async_page_fault at ffffffffa320135e > [exception RIP: f2fs_is_compressed_page+34] > RIP: ffffffffa2ba83a2 RSP: ffffb6580689f9d8 RFLAGS: 00010213 > RAX: 0000000000000001 RBX: fffffc0f50b34bc0 RCX: 0000000000002122 > RDX: 0000000000002123 RSI: 0000000000000c00 RDI: fffffc0f50b34bc0 > RBP: ffff97e815a40178 R8: 0000000000000000 R9: ffff97e83ffc9000 > R10: 0000000000032300 R11: 0000000000032380 R12: ffffb6580689fa38 > R13: fffffc0f50b34bc0 R14: ffff97e825cbd000 R15: 0000000000000c00 > ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 > #6 [ffffb6580689f9d8] __is_cp_guaranteed at ffffffffa2b7ea98 > #7 [ffffb6580689f9f0] f2fs_submit_page_write at ffffffffa2b81a69 > #8 [ffffb6580689fa30] f2fs_do_write_meta_page at ffffffffa2b99777 > #9 [ffffb6580689fae0] __f2fs_write_meta_page at ffffffffa2b75f1a > #10 [ffffb6580689fb18] f2fs_sync_meta_pages at ffffffffa2b77466 > #11 [ffffb6580689fc98] do_checkpoint at ffffffffa2b78e46 > #12 [ffffb6580689fd88] f2fs_write_checkpoint at ffffffffa2b79c29 > #13 [ffffb6580689fdd0] f2fs_sync_fs at ffffffffa2b69d95 > #14 [ffffb6580689fe20] sync_filesystem at ffffffffa2ad2574 > #15 [ffffb6580689fe30] generic_shutdown_super at ffffffffa2a9b582 > #16 [ffffb6580689fe48] kill_block_super at ffffffffa2a9b6d1 > #17 [ffffb6580689fe60] kill_f2fs_super at ffffffffa2b6abe1 > #18 [ffffb6580689fea0] deactivate_locked_super at ffffffffa2a9afb6 > #19 [ffffb6580689feb8] cleanup_mnt at ffffffffa2abcad4 > #20 [ffffb6580689fee0] task_work_run at ffffffffa28bca28 > #21 [ffffb6580689ff00] exit_to_usermode_loop at ffffffffa28050b7 > #22 [ffffb6580689ff38] do_syscall_64 at ffffffffa280560e > #23 [ffffb6580689ff50] entry_SYSCALL_64_after_hwframe at ffffffffa320008c > > This occurred when umount f2fs if enable F2FS_FS_COMPRESSION > with F2FS_IO_TRACE. Fixes it by adding IS_IO_TRACED_PAGE to check > validity of pid for page_private. > > Signed-off-by: Yu Changchun <[email protected]>
Reviewed-by: Chao Yu <[email protected]> Thanks, _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
