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Sun, 29 Jun 2025 15:47:29 -0700 (PDT) Date: Sun, 29 Jun 2025 15:47:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6861c281.a70a0220.3b7e22.0ab8.GAE@google.com> Subject: [syzbot] [mm?] WARNING in xfs_init_fs_context From: syzbot To: akpm@linux-foundation.org, apopple@nvidia.com, byungchul@sk.com, david@redhat.com, gourry@gourry.net, joshua.hahnjy@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, syzkaller-bugs@googlegroups.com, ying.huang@linux.alibaba.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: D97B740004 X-Stat-Signature: r1bwiyt1oakc776i48detu6q59wdzbia X-HE-Tag: 1751237249-957600 X-HE-Meta: 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 OIYD5DCJ 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 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: dfba48a70cb6 Merge tag 'i2c-for-6.16-rc4' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14a62982580000 kernel config: https://syzkaller.appspot.com/x/.config?x=79da270cec5ffd65 dashboard link: https://syzkaller.appspot.com/bug?extid=359a67b608de1ef72f65 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-dfba48a7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/783560258712/vmlinux-dfba48a7.xz kernel image: https://storage.googleapis.com/syzbot-assets/685ad235ac7b/bzImage-dfba48a7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+359a67b608de1ef72f65@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5325 at mm/page_alloc.c:4430 __alloc_pages_slowpath+0xcb3/0xce0 mm/page_alloc.c:4430 Modules linked in: CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00329-gdfba48a70cb6 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__alloc_pages_slowpath+0xcb3/0xce0 mm/page_alloc.c:4430 Code: d8 48 c1 e8 03 0f b6 04 08 84 c0 75 2e f6 43 01 08 48 8b 14 24 0f 84 a2 f3 ff ff 90 0f 0b 90 e9 99 f3 ff ff e8 ae 09 50 09 90 <0f> 0b 90 f7 c5 00 04 00 00 75 bc 90 0f 0b 90 eb b6 89 d9 80 e1 07 RSP: 0018:ffffc9000d62f970 EFLAGS: 00010246 RAX: 1378840d66abe400 RBX: 0000000000000002 RCX: dffffc0000000000 RDX: ffffc9000d62fa80 RSI: 0000000000000002 RDI: 0000000000048cc0 RBP: 0000000000048cc0 R08: ffff88801b68003f R09: 1ffff110036d0007 R10: dffffc0000000000 R11: ffffed10036d0008 R12: ffffc9000d62fa80 R13: 1ffff92001ac5f4c R14: 0000000000048cc0 R15: dffffc0000000000 FS: 00007fcd1cbf46c0(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcd1bd726e0 CR3: 0000000043166000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __alloc_frozen_pages_noprof+0x319/0x370 mm/page_alloc.c:4972 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0xe2/0x3b0 mm/slub.c:2627 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __kmalloc_cache_noprof+0x296/0x3d0 mm/slub.c:4354 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] xfs_init_fs_context+0x54/0x500 fs/xfs/xfs_super.c:2279 alloc_fs_context+0x651/0x7d0 fs/fs_context.c:318 do_new_mount+0x10e/0xa40 fs/namespace.c:3881 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcd1bd900ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcd1cbf3e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fcd1cbf3ef0 RCX: 00007fcd1bd900ca RDX: 0000200000000040 RSI: 0000200000009640 RDI: 00007fcd1cbf3eb0 RBP: 0000200000000040 R08: 00007fcd1cbf3ef0 R09: 0000000000208800 R10: 0000000000208800 R11: 0000000000000246 R12: 0000200000009640 R13: 00007fcd1cbf3eb0 R14: 000000000000964b R15: 0000200000001340 --- 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