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Sat, 10 Jul 2021 15:12:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=3QXNL+D6XbPTQrGHBqEe6kefPssk/lteAEUhSQF2D0o=; b=d3YVBCB2Itbd7EExYYwapYwi43NbFlfFHPDhB5una5rSmWJVqGnuTLIAHm98wQQHOu IdF+Y2umRacNQHnf9rbODF6mxgaHEAq+2UanM5KAXkoAjgrh7vUi3cyO8rEmo3VQmEyu Zlbp80GGFLQ+dfDJGQoCjMWUAeVEwtXJZoRCsvKP9UHGy0kQzfdQjutnbVxmuAgEHJnL rk1YMkixmHzh/Z53Un0eckH5QIXXoeiP2/oLlbJJWb38jwzVXDNdw45iv38Wiq6sprgO Hj2B8miSmrhOr4++TYQMgrc4J9RvQjNF5f/ghWWGEdyeh/xKfMxVh8+w1d5qb/4PZzmC BW6g== X-Gm-Message-State: AOAM531Nc9w6ngUu/oepu7wTrnJRfmptddNjYhHvWu+5vCuYkntt4i2/ PqAKVXKfq46Tv9df9qS7XR2G2kUFj+oLfp4LqtFUKj1Am6TI X-Google-Smtp-Source: ABdhPJw0DtMJP+6mdAERffNYCGNoe/V60x/ROhvRR8UPKTwYe9DAMfSynY49ndxTvJspDU6SAGQF4+8atnOeuGlayLejdYb+JLHY MIME-Version: 1.0 X-Received: by 2002:a05:6e02:dd2:: with SMTP id l18mr30784225ilj.34.1625955137869; Sat, 10 Jul 2021 15:12:17 -0700 (PDT) Date: Sat, 10 Jul 2021 15:12:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000069f57705c6cc2e81@google.com> Subject: [syzbot] BUG: sleeping function called from invalid context in __munlock_pagevec From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 87FBEF000392 X-Stat-Signature: m3jsue5cr3fdpnk8ik37j89hekk3syip Authentication-Results: imf17.hostedemail.com; dkim=none; spf=pass (imf17.hostedemail.com: domain of 3QRvqYAkbAC4cijUKVVObKZZSN.QYYQVOecObMYXdOXd.MYW@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.71 as permitted sender) smtp.mailfrom=3QRvqYAkbAC4cijUKVVObKZZSN.QYYQVOecObMYXdOXd.MYW@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) X-HE-Tag: 1625955138-863256 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot found the following issue on: HEAD commit: ee268dee Add linux-next specific files for 20210707 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13ed30d2300000 kernel config: https://syzkaller.appspot.com/x/.config?x=59e1e3bbc3afca75 dashboard link: https://syzkaller.appspot.com/bug?extid=cf9c548279bff83b0c97 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17a25ee4300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f81928300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cf9c548279bff83b0c97@syzkaller.appspotmail.com BUG: sleeping function called from invalid context at include/linux/pagemap.h:674 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 8467, name: syz-executor631 1 lock held by syz-executor631/8467: #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: map_pte mm/page_vma_mapped.c:52 [inline] #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: page_vma_mapped_walk+0xd87/0x24f0 mm/page_vma_mapped.c:261 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 8467 Comm: syz-executor631 Not tainted 5.13.0-next-20210707-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 ___might_sleep.cold+0x1f1/0x237 kernel/sched/core.c:9171 lock_page include/linux/pagemap.h:674 [inline] __munlock_pagevec+0xa22/0x2340 mm/mlock.c:314 munlock_vma_pages_range+0x9d7/0xf00 mm/mlock.c:475 munlock_vma_pages_all mm/internal.h:354 [inline] unlock_range mm/mmap.c:2811 [inline] exit_mmap+0x47a/0x620 mm/mmap.c:3188 __mmput+0x122/0x470 kernel/fork.c:1152 mmput+0x58/0x60 kernel/fork.c:1173 exit_mm kernel/exit.c:501 [inline] do_exit+0xae2/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43e969 Code: Unable to access opcode bytes at RIP 0x43e93f. RSP: 002b:00007ffce2d3a7a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043e969 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b02f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 ============================= [ BUG: Invalid wait context ] 5.13.0-next-20210707-syzkaller #0 Tainted: G W ----------------------------- syz-executor631/8467 is trying to lock: ffff888035ea6000 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: i_mmap_lock_read include/linux/fs.h:514 [inline] ffff888035ea6000 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: rmap_walk_file+0x52f/0x710 mm/rmap.c:2337 other info that might help us debug this: context-{4:4} 1 lock held by syz-executor631/8467: #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: map_pte mm/page_vma_mapped.c:52 [inline] #0: ffff8880343e0978 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: page_vma_mapped_walk+0xd87/0x24f0 mm/page_vma_mapped.c:261 stack backtrace: CPU: 0 PID: 8467 Comm: syz-executor631 Tainted: G W 5.13.0-next-20210707-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 print_lock_invalid_wait_context kernel/locking/lockdep.c:4666 [inline] check_wait_context kernel/locking/lockdep.c:4727 [inline] __lock_acquire.cold+0x213/0x3ab kernel/locking/lockdep.c:4965 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 down_read+0x9a/0x440 kernel/locking/rwsem.c:1353 i_mmap_lock_read include/linux/fs.h:514 [inline] rmap_walk_file+0x52f/0x710 mm/rmap.c:2337 rmap_walk+0x10d/0x190 mm/rmap.c:2366 page_mlock+0x448/0x650 mm/rmap.c:2029 __munlock_isolated_page+0x88/0x410 mm/mlock.c:122 __munlock_pagevec+0xd7f/0x2340 mm/mlock.c:322 munlock_vma_pages_range+0x9d7/0xf00 mm/mlock.c:475 munlock_vma_pages_all mm/internal.h:354 [inline] unlock_range mm/mmap.c:2811 [inline] exit_mmap+0x47a/0x620 mm/mmap.c:3188 __mmput+0x122/0x470 kernel/fork.c:1152 mmput+0x58/0x60 kernel/fork.c:1173 exit_mm kernel/exit.c:501 [inline] do_exit+0xae2/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43e969 Code: Unable to access opcode bytes at RIP 0x43e93f. RSP: 002b:00007ffce2d3a7a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000004b02f0 RCX: 000000000043e969 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004b02f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches