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kernel config: https://syzkaller.appspot.com/x/.config?x=bb7581d3fb1bb0d7 dashboard link: https://syzkaller.appspot.com/bug?extid=2a0d2af125c01db73079 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=149062a2580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/1fce1d4d56ce/disk-260f6f4f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/01688cdba884/vmlinux-260f6f4f.xz kernel image: https://storage.googleapis.com/syzbot-assets/eba9b2f77e6a/bzImage-260f6f4f.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/95ad5335ac08/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2a0d2af125c01db73079@syzkaller.appspotmail.com do_group_exit+0x21c/0x2d0 kernel/exit.c:1105 __do_sys_exit_group kernel/exit.c:1116 [inline] __se_sys_exit_group kernel/exit.c:1114 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1114 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232 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 ------------[ cut here ]------------ kernel BUG at mm/internal.h:491! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 7687 Comm: syz.0.738 Tainted: G W 6.16.0-syzkaller-08685-g260f6f4fda93 #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:set_page_refcounted+0x142/0x1e0 mm/internal.h:491 Code: 48 89 d8 48 25 ff 0f 00 00 74 21 e8 18 4e a4 ff e9 2c ff ff ff e8 0e 4e a4 ff 48 89 df 48 c7 c6 a0 47 17 8b e8 4f 05 e9 ff 90 <0f> 0b 48 89 df be 08 00 00 00 e8 3f 27 03 00 48 89 d8 48 c1 e8 03 RSP: 0018:ffffc900065f7670 EFLAGS: 00010246 RAX: 0ebb44fe4874cf00 RBX: ffffea00011839ff RCX: 0ebb44fe4874cf00 RDX: 0000000000000001 RSI: ffffffff8d1dbecc RDI: ffff88802f581dc0 RBP: 00000000000000ff R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1017124863 R12: 1ffffd4000230746 R13: 0000000000000000 R14: ffffea0001183a33 R15: dffffc0000000000 FS: 00007f4368d266c0(0000) GS:ffff888126c1e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feecfc73000 CR3: 0000000034c06000 CR4: 00000000003526f0 Call Trace: alloc_pages_noprof+0xe4/0x1e0 mm/mempolicy.c:2513 folio_alloc_noprof+0x22/0xc0 mm/mempolicy.c:2520 filemap_alloc_folio_noprof+0xdf/0x510 mm/filemap.c:1007 do_read_cache_folio+0x1c0/0x560 mm/filemap.c:3885 do_read_cache_page mm/filemap.c:3989 [inline] read_cache_page+0x5d/0x170 mm/filemap.c:3998 read_mapping_page include/linux/pagemap.h:993 [inline] inode_read_data+0xa7/0x480 fs/ntfs3/inode.c:1054 ntfs_fill_super+0x39c8/0x40b0 fs/ntfs3/super.c:1533 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4321 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: 0033:0x7f4369ac030a 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:00007f4368d25e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4368d25ef0 RCX: 00007f4369ac030a RDX: 0000200000000080 RSI: 000020000001f740 RDI: 00007f4368d25eb0 RBP: 0000200000000080 R08: 00007f4368d25ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000020000001f740 R13: 00007f4368d25eb0 R14: 000000000001f771 R15: 0000200000000100 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:set_page_refcounted+0x142/0x1e0 mm/internal.h:491 Code: 48 89 d8 48 25 ff 0f 00 00 74 21 e8 18 4e a4 ff e9 2c ff ff ff e8 0e 4e a4 ff 48 89 df 48 c7 c6 a0 47 17 8b e8 4f 05 e9 ff 90 <0f> 0b 48 89 df be 08 00 00 00 e8 3f 27 03 00 48 89 d8 48 c1 e8 03 RSP: 0018:ffffc900065f7670 EFLAGS: 00010246 RAX: 0ebb44fe4874cf00 RBX: ffffea00011839ff RCX: 0ebb44fe4874cf00 RDX: 0000000000000001 RSI: ffffffff8d1dbecc RDI: ffff88802f581dc0 RBP: 00000000000000ff R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1017124863 R12: 1ffffd4000230746 R13: 0000000000000000 R14: ffffea0001183a33 R15: dffffc0000000000 FS: 00007f4368d266c0(0000) GS:ffff888126c1e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feecfc73000 CR3: 0000000034c06000 CR4: 00000000003526f0 --- 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 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