Hello, syzbot found the following issue on: HEAD commit: af2ea8ab7a54 Add linux-next specific files for 20241205 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=1369fde8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=76f158395f6f15fd dashboard link: https://syzkaller.appspot.com/bug?extid=03fb58296859d8dbab4d compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15070820580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16e870f8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8af0861258fa/disk-af2ea8ab.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ffb38cf7a344/vmlinux-af2ea8ab.xz kernel image: https://storage.googleapis.com/syzbot-assets/6fbd2e50358a/bzImage-af2ea8ab.xz The issue was bisected to: commit 3a34b13a88caeb2800ab44a4918f230041b37dd9 Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Fri Jul 30 22:42:34 2021 +0000 pipe: make pipe writes always wake up readers bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10759c0f980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=12759c0f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=14759c0f980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+03fb58296859d8dbab4d@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 3a34b13a88ca ("pipe: make pipe writes always wake up readers") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5830 at mm/page_alloc.c:4728 __alloc_frozen_pages_noprof+0x3c5/0x710 mm/page_alloc.c:4728 Modules linked in: CPU: 0 UID: 0 PID: 5830 Comm: syz-executor405 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__alloc_frozen_pages_noprof+0x3c5/0x710 mm/page_alloc.c:4728 Code: ff df 0f 85 09 01 00 00 44 89 e9 81 e1 7f ff ff ff a9 00 00 04 00 41 0f 44 cd 41 89 cd e9 f9 00 00 00 c6 05 87 3a 0c 0e 01 90 <0f> 0b 90 41 83 fc 0a 0f 86 13 fd ff ff 45 31 e4 48 c7 44 24 20 0e RSP: 0018:ffffc90003e8f940 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003e8f9c8 RBP: ffffc90003e8fa50 R08: ffffc90003e8f9c7 R09: 0000000000000000 R10: ffffc90003e8f9a0 R11: fffff520007d1f39 R12: 0000000000000020 R13: 0000000000040d40 R14: 1ffff920007d1f30 R15: 1ffff920007d1f2c FS: 0000555587715480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 000000003352e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:4786 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4228 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4255 __do_kmalloc_node mm/slub.c:4271 [inline] __kmalloc_noprof+0x339/0x4c0 mm/slub.c:4295 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] v9fs_fid_get_acl+0x4f/0x100 fs/9p/acl.c:32 __v9fs_get_acl fs/9p/acl.c:66 [inline] v9fs_get_acl+0x96/0x350 fs/9p/acl.c:92 v9fs_qid_iget_dotl fs/9p/vfs_inode_dotl.c:131 [inline] v9fs_inode_from_fid_dotl+0x22d/0x2c0 fs/9p/vfs_inode_dotl.c:154 v9fs_get_new_inode_from_fid fs/9p/v9fs.h:251 [inline] v9fs_mount+0x718/0xa90 fs/9p/vfs_super.c:142 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f05fcd17de9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc85e9b418 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f05fcd17de9 RDX: 0000000020000b80 RSI: 00000000200003c0 RDI: 0000000000000000 RBP: 000000000000ec55 R08: 0000000020000580 R09: 00007ffc85e9b450 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc85e9b450 R13: 00007ffc85e9b43c R14: 431bde82d7b634db R15: 00007f05fcd60087 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. 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
