Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe868416028 EFLAGS: 00000246 ORIG_RAX: 0000000000000098 RAX: ffffffffffffffda RBX: 00007fe86a435fa0 RCX: 00007fe86a1bc799 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fe868416090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fe86a436038 R14: 00007fe86a435fa0 R15: 00007ffcd0931e68 ------------[ cut here ]------------ anon_vma->num_active_vmas WARNING: mm/rmap.c:528 at unlink_anon_vmas+0x6c5/0x730 mm/rmap.c:528, CPU#1: syz.5.5622/24393 Modules linked in: CPU: 1 UID: 0 PID: 24393 Comm: syz.5.5622 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026 RIP: 0010:unlink_anon_vmas+0x6c5/0x730 mm/rmap.c:528 Code: 08 00 48 3b 6c 24 18 74 29 e8 07 a5 ad ff 49 89 ee e9 cf fd ff ff e8 fa a4 ad ff 90 0f 0b 90 e9 4d fe ff ff e8 ec a4 ad ff 90 <0f> 0b 90 e9 81 fe ff ff e8 de a4 ad ff eb 05 e8 d7 a4 ad ff 48 83 RSP: 0018:ffffc900054ef648 EFLAGS: 00010293 RAX: ffffffff8216aee4 RBX: ffff88803e09a100 RCX: ffff888038d21e80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88803ee06170 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1ed4637 R12: ffffffffffffffff R13: 1ffff110057aca9c R14: ffff88802bd654e0 R15: ffff88803e09a100 FS: 0000000000000000(0000) GS:ffff88812643f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556f8dd9e8 CR3: 000000003f2aa000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000053d000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: free_pgtables+0x836/0xb70 mm/memory.c:427 exit_mmap+0x490/0xa10 mm/mmap.c:1314 __mmput+0xcb/0x3d0 kernel/fork.c:1174 exit_mm+0x168/0x220 kernel/exit.c:581 do_exit+0x6a2/0x23c0 kernel/exit.c:964 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 get_signal+0x125c/0x1310 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe86a1bc799 Code: Unable to access opcode bytes at 0x7fe86a1bc76f. RSP: 002b:00007fe8684160e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007fe86a435fa8 RCX: 00007fe86a1bc799 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe86a435fac RBP: 00007fe86a435fa0 R08: 3fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe86a436038 R14: 00007ffcd0931d80 R15: 00007ffcd0931e68 ---------------- Code disassembly (best guess): 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall * 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 c7 c1 e8 ff ff ff mov $0xffffffffffffffe8,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W