general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 5072 Comm: syz-executor107 Not tainted 6.7.0-rc3-syzkaller-00014-gdf60cee26a2e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:pagemap_scan_backout_range fs/proc/task_mmu.c:1946 [inline]
RIP: 0010:pagemap_scan_hugetlb_entry+0x6ca/0x1130 fs/proc/task_mmu.c:2254
Code: 3c 02 00 0f 85 68 09 00 00 48 8b 83 80 00 00 00 48 8d 04 40 4d 8d 6c c5 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 51 09 00 00 4d 8b 75 00 48 8b 7c 24 08 4c 89 f6
RSP: 0018:ffffc90003a2fa50 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90003a2fdb0 RCX: ffffffff82111e46
RDX: 0000000000000000 RSI: ffffffff82111e54 RDI: ffffc90003a2fe30
RBP: 1ffff92000745f52 R08: 0000000000000006 R09: 0000000020ffc000
R10: 00000000211f9000 R11: ffffffff915f5de8 R12: ffff8880299e0300
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000020ffc000
FS: 0000555555c7b380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 00000000752b4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
walk_hugetlb_range mm/pagewalk.c:326 [inline]
__walk_page_range+0x36c/0x770 mm/pagewalk.c:393
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
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
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: 0033:0x7f171819d669
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffbe81bb68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fffbe81bb80 RCX: 00007f171819d669
RDX: 0000000020000040 RSI: 00000000c0606610 RDI: 0000000000000003
RBP: 00007f1718210610 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000286 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fffbe81bdb8 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pagemap_scan_backout_range fs/proc/task_mmu.c:1946 [inline]
RIP: 0010:pagemap_scan_hugetlb_entry+0x6ca/0x1130 fs/proc/task_mmu.c:2254
Code: 3c 02 00 0f 85 68 09 00 00 48 8b 83 80 00 00 00 48 8d 04 40 4d 8d 6c c5 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 51 09 00 00 4d 8b 75 00 48 8b 7c 24 08 4c 89 f6
RSP: 0018:ffffc90003a2fa50 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90003a2fdb0 RCX: ffffffff82111e46
RDX: 0000000000000000 RSI: ffffffff82111e54 RDI: ffffc90003a2fe30
RBP: 1ffff92000745f52 R08: 0000000000000006 R09: 0000000020ffc000
R10: 00000000211f9000 R11: ffffffff915f5de8 R12: ffff8880299e0300
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000020ffc000
FS: 0000555555c7b380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 00000000752b4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 3c 02 cmp $0x2,%al
2: 00 0f add %cl,(%rdi)
4: 85 68 09 test %ebp,0x9(%rax)
7: 00 00 add %al,(%rax)
9: 48 8b 83 80 00 00 00 mov 0x80(%rbx),%rax
10: 48 8d 04 40 lea (%rax,%rax,2),%rax
14: 4d 8d 6c c5 00 lea 0x0(%r13,%rax,8),%r13
19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
20: fc ff df
23: 4c 89 ea mov %r13,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 51 09 00 00 jne 0x985
34: 4d 8b 75 00 mov 0x0(%r13),%r14
38: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi
3d: 4c 89 f6 mov %r14,%rsi