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Mon, 03 Jul 2023 09:34:55 -0700 (PDT) Date: Mon, 03 Jul 2023 09:34:55 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000273d0105ff97bf56@google.com> Subject: [syzbot] [mm?] WARNING in try_grab_page 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-Rspam-User: X-Stat-Signature: fni3ofrmncthi4n1a4h5brbqnkybtsfh X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: CDA7F20009 X-HE-Tag: 1688402096-61270 X-HE-Meta: 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 sNlBnQJm 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 OZ6t+HyN 7cSuR+poj8ffs7P70gajBpft015RacAoF+JN/H/FJJZZtzM+aAVV+jfX63OYuAyH98+vFw75G6/Z/0GG2xe/gxvrahxSNOcSj1egVFqBNGgtdO2BpLUoKwusD4Hj6fElWGo6ZAtUSY4RjLEmkZyds6A8oNSKaJZYrygnHC7aLcdZ0joBnbvELxe8urh98aC2TExvFzHgsJLNjJ+xQREwaEhYF50fi/9NwFz0Zj3Cgn+aS224bbC4vDLXpYRXVuN2iIzQEkF3d+r49yqnHG3S6A0QwaHjUIatc9OIsb7+aft5AHM0b5ssBZDOr5FZhGLZJjehqGhKvUJ6IGxIROGc9QEG1Ma8aGvsaDTZHuBh+XI= 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: 3a8a670eeeaa Merge tag 'net-next-6.5' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12c1d408a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=ce7f4ca96cdf82c7 dashboard link: https://syzkaller.appspot.com/bug?extid=9b82859567f2e50c123e compiler: aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/384ffdcca292/non_bootable_disk-3a8a670e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a940531a9b86/vmlinux-3a8a670e.xz kernel image: https://storage.googleapis.com/syzbot-assets/4f3cbae5be61/Image-3a8a670e.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9b82859567f2e50c123e@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 __lse_atomic_add arch/arm64/include/asm/atomic_lse.h:27 [inline] WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 arch_atomic_add arch/arm64/include/asm/atomic.h:28 [inline] WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 raw_atomic_add include/linux/atomic/atomic-arch-fallback.h:537 [inline] WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 atomic_add include/linux/atomic/atomic-instrumented.h:105 [inline] WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 try_grab_page+0x108/0x160 mm/gup.c:252 Modules linked in: CPU: 1 PID: 20384 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-04247-g3a8a670eeeaa #0 Hardware name: linux,dummy-virt (DT) pstate: a0400009 (NzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : try_grab_page+0x108/0x160 mm/gup.c:229 lr : follow_page_pte+0x174/0x3e4 mm/gup.c:651 sp : ffff800089bbb5e0 x29: ffff800089bbb5e0 x28: 0000000000200000 x27: ffff000004d23800 x26: 0120000042835fc3 x25: 0000000000000000 x24: 0000000000080000 x23: ffff800089bbb738 x22: fffffc00000a0d40 x21: ffff00001e541008 x20: fcff00001e5a7b40 x19: 0000000000290000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800081ccc7c0 x15: 0000ffff8b6e9fff x14: 0000000000000000 x13: 1edfe00003cc9f01 x12: ffff800089bbb628 x11: f6ff00001e64f800 x10: f6ff00001e64f80c x9 : f6ff00001e64f808 x8 : 0000000020001000 x7 : 0000000020000000 x6 : 0000000000000000 x5 : 0000000000042835 x4 : 0000000020001000 x3 : fffffc00000a0d40 x2 : fffffc00000a0d40 x1 : 0000000000290000 x0 : 00000000fffffff3 Call trace: __lse_atomic_add arch/arm64/include/asm/atomic_lse.h:27 [inline] arch_atomic_add arch/arm64/include/asm/atomic.h:28 [inline] raw_atomic_add include/linux/atomic/atomic-arch-fallback.h:537 [inline] atomic_add include/linux/atomic/atomic-instrumented.h:105 [inline] try_grab_page+0x108/0x160 mm/gup.c:252 follow_pmd_mask mm/gup.c:734 [inline] follow_pud_mask mm/gup.c:765 [inline] follow_p4d_mask mm/gup.c:782 [inline] follow_page_mask+0x12c/0x2e4 mm/gup.c:839 __get_user_pages+0x174/0x30c mm/gup.c:1217 __get_user_pages_locked mm/gup.c:1448 [inline] __gup_longterm_locked+0x94/0x8f4 mm/gup.c:2142 internal_get_user_pages_fast+0x970/0xb60 mm/gup.c:3140 pin_user_pages_fast+0x4c/0x60 mm/gup.c:3246 iov_iter_extract_user_pages lib/iov_iter.c:1768 [inline] iov_iter_extract_pages+0xc8/0x54c lib/iov_iter.c:1831 extract_user_to_sg lib/scatterlist.c:1123 [inline] extract_iter_to_sg lib/scatterlist.c:1349 [inline] extract_iter_to_sg+0x26c/0x6fc lib/scatterlist.c:1339 hash_sendmsg+0xc0/0x43c crypto/algif_hash.c:117 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0x54/0x60 net/socket.c:748 ____sys_sendmsg+0x270/0x2ac net/socket.c:2494 ___sys_sendmsg+0x80/0xdc net/socket.c:2548 __sys_sendmsg+0x68/0xc4 net/socket.c:2577 __do_sys_sendmsg net/socket.c:2586 [inline] __se_sys_sendmsg net/socket.c:2584 [inline] __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common.constprop.0+0x44/0xe4 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x38/0xa4 arch/arm64/kernel/syscall.c:191 el0_svc+0x2c/0xb0 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0xc0/0xc4 arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:591 ---[ end trace 0000000000000000 ]--- --- 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. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup