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Sat, 21 Jun 2025 14:52:26 -0700 (PDT) Date: Sat, 21 Jun 2025 14:52:26 -0700 In-Reply-To: <683f1551.050a0220.55ceb.0017.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6857299a.a00a0220.137b3.0085.GAE@google.com> Subject: Re: [syzbot] [mm?] kernel BUG in sanity_check_pinned_pages From: syzbot To: akpm@linux-foundation.org, axboe@kernel.dk, catalin.marinas@arm.com, david@redhat.com, jgg@ziepe.ca, jhubbard@nvidia.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, peterx@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 0D99A100006 X-Stat-Signature: b4qmospe4j6osaa4b1dhjwdopqe1ktqt X-Rspam-User: X-HE-Tag: 1750542746-956047 X-HE-Meta: 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 oAaEqLN5 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 vg5N/Tcn T6vUUOBj3nkLuYOolIQ4tyEgYX2V1yCGy2YSfK9ZKEI60/v7xepLce5zOAWLGi5fPLbRQayFEcAE/5EWVMlABGRvDAHvEXu5wMA0qSsI66//HgXziDeLkTn1evR7JYnCTLsJRoYEtd/fmu70FJgPWLyv0mr1A5IopDyAl6epnwIZCrqOaNZ9uncrUe3PmOGq8krmsgVty5CDINnZTel/prF5l0jYodMcj4eujf5Dwx65vtQo46v7DTNQ7A0DpwW89lOQamw/X9exboDbGslqsscNWheuvLvZiMq+lp4A7Nn2RelihVAl6lRtkV5bi4EwQbvVVvCWp8XvQDmhgVJgCRg8jeVdCC94KpNaxjsrAN0dv94W0U+6R+FjJwyRDPl7LFsBFzKwYCRYyicJEpcpuQ== 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: List-Subscribe: List-Unsubscribe: syzbot has found a reproducer for the following issue on: HEAD commit: 9aa9b43d689e Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=1525330c580000 kernel config: https://syzkaller.appspot.com/x/.config?x=27f179c74d5c35cd dashboard link: https://syzkaller.appspot.com/bug?extid=1d335893772467199ab6 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d73370580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=160ef30c580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/974f3ac1c6a5/disk-9aa9b43d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a5b5075d317f/vmlinux-9aa9b43d.xz kernel image: https://storage.googleapis.com/syzbot-assets/2f0ba7fec19b/Image-9aa9b43d.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/76067befefec/mount_4.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=1549f6bc580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1d335893772467199ab6@syzkaller.appspotmail.com head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000200 page dumped because: VM_BUG_ON_PAGE(!PageAnonExclusive(&folio->page) && !PageAnonExclusive(page)) ------------[ cut here ]------------ kernel BUG at mm/gup.c:71! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 2171 Comm: kworker/u8:9 Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: iou_exit io_ring_exit_work pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : sanity_check_pinned_pages+0x7cc/0x7d0 mm/gup.c:70 lr : sanity_check_pinned_pages+0x7cc/0x7d0 mm/gup.c:70 sp : ffff8000a03a7640 x29: ffff8000a03a7660 x28: dfff800000000000 x27: 1fffffbff8723000 x26: 05ffc00000020178 x25: 05ffc00000020178 x24: fffffdffc3918000 x23: fffffdffc3918000 x22: ffff8000a03a76e0 x21: 05ffc00000020178 x20: 0000000000000000 x19: ffff8000a03a76e0 x18: 00000000ffffffff x17: 703e2d6f696c6f66 x16: ffff80008aecb65c x15: 0000000000000001 x14: 1fffe000337e14e2 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000337e14e3 x10: 0000000000ff0100 x9 : cc07ffb5a919f400 x8 : cc07ffb5a919f400 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a03a6d58 x4 : ffff80008f727060 x3 : ffff8000807bef2c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000061 Call trace: sanity_check_pinned_pages+0x7cc/0x7d0 mm/gup.c:70 (P) unpin_user_page+0x80/0x10c mm/gup.c:192 io_release_ubuf+0x84/0xf8 io_uring/rsrc.c:116 io_buffer_unmap io_uring/rsrc.c:143 [inline] io_free_rsrc_node+0x250/0x57c io_uring/rsrc.c:516 io_put_rsrc_node io_uring/rsrc.h:103 [inline] io_rsrc_data_free+0x148/0x298 io_uring/rsrc.c:200 io_sqe_buffers_unregister+0x84/0xa0 io_uring/rsrc.c:610 io_ring_ctx_free+0x48/0x480 io_uring/io_uring.c:2729 io_ring_exit_work+0x764/0x7d8 io_uring/io_uring.c:2971 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 Code: b0052bc1 91008021 aa1703e0 97fff8ab (d4210000) ---[ end trace 0000000000000000 ]--- --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.