general protection fault, probably for non-canonical address 0xdffffc000000001d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000e8-0x00000000000000ef] CPU: 0 PID: 5077 Comm: syz-executor226 Not tainted 6.7.0-rc2-syzkaller-00147-gf1a09972a45a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:__lock_acquire+0xe2e/0x3b10 kernel/locking/lockdep.c:5004 Code: 11 00 00 39 05 e3 51 f6 0f 0f 82 ba 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 f9 1f 00 00 49 81 3c 24 a0 29 b5 90 0f 84 a9 f2 RSP: 0018:ffffc90004327838 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000001d RSI: ffff888079141dc0 RDI: 00000000000000e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f194857 R11: 0000000000000001 R12: 00000000000000e8 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b2cd253d0 CR3: 00000000661c4000 CR4: 0000000000350ef0 Call Trace: lock_acquire kernel/locking/lockdep.c:5753 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5718 down_write+0x3a/0x50 kernel/locking/rwsem.c:1579 hugetlb_vma_lock_write mm/hugetlb.c:300 [inline] hugetlb_vma_lock_write+0x8d/0xd0 mm/hugetlb.c:291 __hugetlb_zap_begin+0x1e9/0x2b0 mm/hugetlb.c:5708 hugetlb_zap_begin include/linux/hugetlb.h:258 [inline] unmap_vmas+0x2f4/0x470 mm/memory.c:1742 exit_mmap+0x1ad/0xa70 mm/mmap.c:3308 __mmput+0x12a/0x4d0 kernel/fork.c:1349 mmput+0x62/0x70 kernel/fork.c:1371 exit_mm kernel/exit.c:567 [inline] do_exit+0x9ad/0x2ae0 kernel/exit.c:858 __do_sys_exit kernel/exit.c:988 [inline] __se_sys_exit kernel/exit.c:986 [inline] __x64_sys_exit+0x42/0x50 kernel/exit.c:986 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f6b2ccebab9 Code: Unable to access opcode bytes at 0x7f6b2cceba8f. RSP: 002b:00007ffffa09b568 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6b2ccebab9 RDX: 00007f6b2cd253f3 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000000db16 R08: 0000000000000000 R09: 0000000000000006 R10: 00007f6b2ccebab9 R11: 0000000000000246 R12: 00007ffffa09b57c R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe2e/0x3b10 kernel/locking/lockdep.c:5004 Code: 11 00 00 39 05 e3 51 f6 0f 0f 82 ba 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 f9 1f 00 00 49 81 3c 24 a0 29 b5 90 0f 84 a9 f2 RSP: 0018:ffffc90004327838 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000001d RSI: ffff888079141dc0 RDI: 00000000000000e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f194857 R11: 0000000000000001 R12: 00000000000000e8 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b2cd253d0 CR3: 00000000661c4000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 11 00 adc %eax,(%rax) 2: 00 39 add %bh,(%rcx) 4: 05 e3 51 f6 0f add $0xff651e3,%eax 9: 0f 82 ba 05 00 00 jb 0x5c9 f: ba 01 00 00 00 mov $0x1,%edx 14: e9 e4 00 00 00 jmp 0xfd 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 f9 1f 00 00 jne 0x202d 34: 49 81 3c 24 a0 29 b5 cmpq $0xffffffff90b529a0,(%r12) 3b: 90 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: a9 .byte 0xa9 3f: f2 repnz