general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7]
CPU: 0 PID: 27954 Comm: syz-executor.2 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unlink_anon_vmas+0x272/0x860 mm/rmap.c:410
Code: 00 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 7e 05 00 00 49 8b ac 24 a8 00 00 00 48 8d bd a4 00 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 59
RSP: 0018:ffffc9000bcd7990 EFLAGS: 00010207
RAX: 0000000000000014 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888090d91d00 RSI: ffffffff81b1efa3 RDI: 00000000000000a4
RBP: 0000000000000000 R08: ffff88800010f1b0 R09: ffff88801c4ccc17
R10: ffffffff81aa461b R11: 0000000000000000 R12: ffff88800010f100
R13: ffff88807a7354d0 R14: ffff88801c4ccc00 R15: ffff88807a735630
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562c67f6fad8 CR3: 000000007056d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<TASK>
free_pgtables+0x1ab/0x2f0 mm/memory.c:426
exit_mmap+0x1df/0x630 mm/mmap.c:3171
__mmput+0x122/0x4b0 kernel/fork.c:1113
mmput+0x56/0x60 kernel/fork.c:1134
exit_mm kernel/exit.c:507 [inline]
do_exit+0xb27/0x2b40 kernel/exit.c:819
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3f811caae9
Code: Unable to access opcode bytes at RIP 0x7f3f811caabf.
RSP: 002b:00007f3f7e6fe218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3f812de0e8 RCX: 00007f3f811caae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3f812de0e8
RBP: 00007f3f812de0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f812de0ec
R13: 00007f3f81811b2f R14: 00007f3f7e6fe300 R15: 0000000000022000
</TASK>
Modules linked in:
---[ end trace 40f24f271c28fe89 ]---
RIP: 0010:unlink_anon_vmas+0x272/0x860 mm/rmap.c:410
Code: 00 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 7e 05 00 00 49 8b ac 24 a8 00 00 00 48 8d bd a4 00 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 59
RSP: 0018:ffffc9000bcd7990 EFLAGS: 00010207
RAX: 0000000000000014 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888090d91d00 RSI: ffffffff81b1efa3 RDI: 00000000000000a4
RBP: 0000000000000000 R08: ffff88800010f1b0 R09: ffff88801c4ccc17
R10: ffffffff81aa461b R11: 0000000000000000 R12: ffff88800010f100
R13: ffff88807a7354d0 R14: ffff88801c4ccc00 R15: ffff88807a735630
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72e5293000 CR3: 00000000210ea000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 48 89 add %cl,-0x77(%rax)
5: f8 clc
6: 48 c1 e8 03 shr $0x3,%rax
a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
e: 0f 85 7e 05 00 00 jne 0x592
14: 49 8b ac 24 a8 00 00 mov 0xa8(%r12),%rbp
1b: 00
1c: 48 8d bd a4 00 00 00 lea 0xa4(%rbp),%rdi
23: 48 89 f8 mov %rdi,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 0f b6 14 18 movzbl (%rax,%rbx,1),%edx <-- trapping instruction
2e: 48 89 f8 mov %rdi,%rax
31: 83 e0 07 and $0x7,%eax
34: 83 c0 03 add $0x3,%eax
37: 38 d0 cmp %dl,%al
39: 7c 08 jl 0x43
3b: 84 d2 test %dl,%dl
3d: 0f .byte 0xf
3e: 85 .byte 0x85
3f: 59 pop %rcx