inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:840 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg+0xd9/0x180 net/socket.c:753 sock_write_iter+0x29b/0x3d0 net/socket.c:1141 call_write_iter include/linux/fs.h:1956 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x1f0/0x250 fs/read_write.c:637 ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:314! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 3 PID: 43 Comm: kcompactd0 Not tainted 6.6.0-rc3-syzkaller-00038-g0e945134b680 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314 Code: 06 41 83 e4 01 44 89 e6 e8 66 0d b1 ff 45 84 e4 0f 85 c9 fe ff ff e8 28 12 b1 ff 48 c7 c6 80 53 9a 8a 48 89 ef e8 d9 25 ef ff <0f> 0b e8 a2 c7 06 00 e9 6c fe ff ff 48 89 ef e8 95 c7 06 00 eb b7 RSP: 0018:ffffc9000069f8b8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888015ed4800 RSI: ffffffff81d6b4a7 RDI: ffffffff8ae93120 RBP: ffffea000040d600 R08: 0000000000000000 R09: fffffbfff1d9ca42 R10: ffffffff8ece5217 R11: 0000000000000800 R12: 0000000000000000 R13: ffffea000040d3c0 R14: ffffea000040d600 R15: 0000000000010358 FS: 0000000000000000(0000) GS:ffff88802c900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000f737c0c4 CR3: 000000001a428000 CR4: 0000000000352ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: folio_test_hugetlb include/linux/page-flags.h:835 [inline] PageHuge+0x215/0x2b0 mm/hugetlb.c:2050 isolate_migratepages_block+0x61b/0x4a40 mm/compaction.c:950 isolate_migratepages mm/compaction.c:2053 [inline] compact_zone+0x18f6/0x4020 mm/compaction.c:2491 proactive_compact_node+0x118/0x1d0 mm/compaction.c:2780 kcompactd+0x710/0xd80 mm/compaction.c:3100 kthread+0x33c/0x440 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314 Code: 06 41 83 e4 01 44 89 e6 e8 66 0d b1 ff 45 84 e4 0f 85 c9 fe ff ff e8 28 12 b1 ff 48 c7 c6 80 53 9a 8a 48 89 ef e8 d9 25 ef ff <0f> 0b e8 a2 c7 06 00 e9 6c fe ff ff 48 89 ef e8 95 c7 06 00 eb b7 RSP: 0018:ffffc9000069f8b8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888015ed4800 RSI: ffffffff81d6b4a7 RDI: ffffffff8ae93120 RBP: ffffea000040d600 R08: 0000000000000000 R09: fffffbfff1d9ca42 R10: ffffffff8ece5217 R11: 0000000000000800 R12: 0000000000000000 R13: ffffea000040d3c0 R14: ffffea000040d600 R15: 0000000000010358 FS: 0000000000000000(0000) GS:ffff88802c900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000030122000 CR3: 00000000240bf000 CR4: 0000000000352ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400