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Wed, 21 Aug 2024 05:25:22 -0700 (PDT) Date: Wed, 21 Aug 2024 05:25:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d27fe1062030a2b5@google.com> Subject: [syzbot] [mm?] KCSAN: data-race in __reset_isolation_suitable / compact_zone (2) 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: 90276140006 X-Stat-Signature: pufdnejpukkyioru6snwzinx77qmsnsq X-Rspam-User: X-HE-Tag: 1724243123-231405 X-HE-Meta: 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 o4+4oqwe 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 VXfeeTOx H6UHvXtWG1MCbK84Fsg64i6Y/2D4ocAgLcimd56GVRF9uP7RxJjmK5vND6FCEFE58ujVQGY8Pe/sAon1rNFW3GUDBndY48VVHkKJS7qH1F5/Gz+9Q+QKOn+BCG1v/YenaP20/HmByhYPaF8LMtJ79YuE+/yL+6wyKBrcRGxBOJGOtDRhP09lwfyWn/I6MfwwGpGlCNdayMRP6Jf6jWEuET6KV7SCUk0OCeSamV8YaQtw5Nh5FmoJPj5c7ScHCeNCbmd/IG7ePvjHqlx1jQXLhwJOqqGv9HgL0mwx/PeUi9Z7xIpzT66JtfpwNNj/DYtMXARjuVvZtNVTiYo+FbOIxqYY9o085BnRxthfTGMLJuQl/tV0pHEk42aV/Zmqrxwj 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: Hello, syzbot found the following issue on: HEAD commit: b311c1b497e5 Merge tag '6.11-rc4-server-fixes' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=140ca7c5980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3aa0f597417bf8c7 dashboard link: https://syzkaller.appspot.com/bug?extid=6e54fc669e2c440731fd compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/806c87e93e26/disk-b311c1b4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/73951ff34e6d/vmlinux-b311c1b4.xz kernel image: https://storage.googleapis.com/syzbot-assets/f4b7546a486d/bzImage-b311c1b4.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6e54fc669e2c440731fd@syzkaller.appspotmail.com EXT4-fs (loop2): stripe (7) is not aligned with cluster size (16), stripe is disabled EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ================================================================== BUG: KCSAN: data-race in __reset_isolation_suitable / compact_zone write to 0xffff88823fffab90 of 8 bytes by task 77 on cpu 0: __reset_isolation_suitable+0x149/0x2b0 mm/compaction.c:438 reset_isolation_suitable+0xb2/0x100 mm/compaction.c:469 kswapd_try_to_sleep mm/vmscan.c:7084 [inline] kswapd+0x296/0x1820 mm/vmscan.c:7193 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 write to 0xffff88823fffab90 of 8 bytes by task 28833 on cpu 1: update_cached_migrate mm/compaction.c:504 [inline] isolate_migratepages mm/compaction.c:2189 [inline] compact_zone+0x1293/0x2930 mm/compaction.c:2641 compact_zone_order mm/compaction.c:2806 [inline] try_to_compact_pages+0x388/0x920 mm/compaction.c:2862 __alloc_pages_direct_compact+0x6f/0x1e0 mm/page_alloc.c:3650 __alloc_pages_slowpath+0x236/0xd70 mm/page_alloc.c:4245 __alloc_pages_noprof+0x26d/0x360 mm/page_alloc.c:4708 alloc_pages_preferred_many mm/mempolicy.c:2204 [inline] alloc_pages_mpol_noprof+0xec/0x1e0 mm/mempolicy.c:2228 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2343 vm_area_alloc_pages mm/vmalloc.c:3584 [inline] __vmalloc_area_node mm/vmalloc.c:3653 [inline] __vmalloc_node_range_noprof+0x736/0xec0 mm/vmalloc.c:3834 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:675 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:256 hash_netiface_create+0x273/0x730 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1104 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2550 nfnetlink_rcv+0x16c/0x15e0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x312/0x410 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x1e9/0x280 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2687 x64_sys_call+0x2689/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x0000000000196e00 -> 0x0000000000105a00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 28833 Comm: syz.2.8522 Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ================================================================== EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. --- 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 report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup