search for: __mmdrop

...g <jasowang at redhat.com> > Date: Fri May 24 08:12:18 2019 +0000 > > ??vhost: access vq metadata through kernel virtual address > > No one has replied to the original thread for this bug yet. Hi: We believe above two bugs are duplicated with the report "WARNING in __mmdrop". Can I just dup them with #syz dup "WARNING in __mmdrop" (If yes, just wonder how syzbot differ bugs, technically, several different bug can hit the same warning). > > If you fix this bug, please add the following tag to the commit: > Reported-by: syzbot+7f067c796...

...58bd>] show_stack_log_lvl+0xcd/0x120 14857 kernel: [<c0105abb>] show_registers+0x1ab/0x240 14857 kernel: [<c0105dc1>] die+0x111/0x240 14857 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 14857 kernel: [<c01052ab>] error_code+0x2b/0x30 14857 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 14857 kernel: [<c011be50>] mmput+0x80/0xa0 14857 kernel: [<c0170a8a>] flush_old_exec+0x1ba/0xb30 14857 kernel: [<c0191e1f>] load_elf_binary+0x26f/0x1780 14857 kernel: [<c0171602>] search_binary_handler+0x92/0x240 14857 kernel: [<c0171923>] do_execve+0x17...

...0e080 08048000 00000000 00003000 Dec 5 15:48:36 postamt1 kernel: Call Trace: [set_page_dirty+80/96] [zap_page_range+447/656] [fput+188/224] [exit_mmap+186/304] [do_coredum p+210/222] Dec 5 15:48:36 postamt1 kernel: [mmput+55/96] [do_exit+145/528] [collect_signal+150/224] [do_signal+495/604] [__mmdrop+47/52] [do_exit+515/528] Dec 5 15:48:36 postamt1 kernel: [sys_munmap+52/80] [do_invalid_op+0/160] [signal_return+20/24] Dec 5 15:48:36 postamt1 kernel: Dec 5 15:48:36 postamt1 kernel: Code: 0f 0b 6a 00 27 13 22 c0 83 c4 0c 89 d8 2b 05 30 3e 2c c0 69 Dec 5 15:53:20 postamt1 authdaemond.mysql:...

Hi Dan, Jérôme and Jason, below is a series that cleans up the dev_pagemap interface so that it is more easily usable, which removes the need to wrap it in hmm and thus allowing to kill a lot of code Note: this series is on top of Linux 5.2-rc6 and has some minor conflicts with the hmm tree that are easy to resolve. Diffstat summary: 34 files changed, 379 insertions(+), 1016 deletions(-) Git