------------[ cut here ]------------ WARNING: CPU: 1 PID: 5214 at arch/x86/include/asm/pgtable.h:403 pte_uffd_wp arch/x86/include/asm/pgtable.h:403 [inline] WARNING: CPU: 1 PID: 5214 at arch/x86/include/asm/pgtable.h:403 pagemap_page_category fs/proc/task_mmu.c:1785 [inline] WARNING: CPU: 1 PID: 5214 at arch/x86/include/asm/pgtable.h:403 pagemap_scan_pmd_entry+0x1083/0x23f0 fs/proc/task_mmu.c:2180 Modules linked in: CPU: 1 PID: 5214 Comm: syz-executor.0 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:pte_uffd_wp arch/x86/include/asm/pgtable.h:403 [inline] RIP: 0010:pagemap_page_category fs/proc/task_mmu.c:1785 [inline] RIP: 0010:pagemap_scan_pmd_entry+0x1083/0x23f0 fs/proc/task_mmu.c:2180 Code: e9 35 f6 ff ff e8 fd 0f 76 ff 49 89 dc 31 ff 41 83 e4 02 4c 89 e6 e8 7c 0b 76 ff 4d 85 e4 0f 84 e4 03 00 00 e8 de 0f 76 ff 90 <0f> 0b 90 41 be 08 00 00 00 e9 c9 f5 ff ff e8 ca 0f 76 ff 41 83 e7 RSP: 0018:ffffc90004e67848 EFLAGS: 00010283 RAX: 0000000000001a8a RBX: 000000004a23dc67 RCX: ffffc90003b91000 RDX: 0000000000040000 RSI: ffffffff82117a62 RDI: 0000000000000007 RBP: ffffc90004e67d88 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000002 R12: 0000000000000002 R13: 0000000000000000 R14: 000000000000000a R15: ffff88807a3b9000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0063) knlGS:00000000f7fb2b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000160 CR3: 0000000027edf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: walk_pmd_range mm/pagewalk.c:143 [inline] walk_pud_range mm/pagewalk.c:221 [inline] walk_p4d_range mm/pagewalk.c:256 [inline] walk_pgd_range+0xa48/0x1870 mm/pagewalk.c:293 __walk_page_range+0x630/0x770 mm/pagewalk.c:395 walk_page_range+0x626/0xa80 mm/pagewalk.c:521 do_pagemap_scan+0x40d/0xcd0 fs/proc/task_mmu.c:2437 do_pagemap_cmd+0x5e/0x80 fs/proc/task_mmu.c:2478 __do_compat_sys_ioctl+0x2bf/0x330 fs/ioctl.c:972 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0x62/0xe0 arch/x86/entry/common.c:230 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7fb7579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7fb25ac EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c0606610 RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi