kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25786 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mm_update_next_owner+0x43a/0x650 kernel/exit.c:453
Code: 48 8b 85 90 05 00 00 48 8d a8 70 fa ff ff 49 39 c5 0f 84 df fe ff ff e8 34 c7 29 00 4c 8d 85 20 04 00 00 4c 89 c0 48 c1 e8 03 <80> 3c 18 00 0f 85 18 01 00 00 4c 8b bd 20 04 00 00 4d 39 e7 75 95
RSP: 0018:ffff8880a1257a98 EFLAGS: 00010206
RAX: 000eeedfffffffd2 RBX: dffffc0000000000 RCX: ffffffff8138bd9e
RDX: 0000000000000000 RSI: ffffffff8138be3c RDI: ffff8880179e4840
RBP: 007776fffffffa70 R08: 007776fffffffe90 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b2858900
R13: ffff88800012f790 R14: ffff888099d62580 R15: ffff888093a46700
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc99c4aefc0 CR3: 000000000fc3a000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:548 [inline]
 do_exit+0xae4/0x2be0 kernel/exit.c:857
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fc99dc66be1
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffd81dc8f30 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fc99dd54f60 RCX: 00007fc99dc66be1
RDX: 00007ffd81dc8f70 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc99dd56960 R08: 0000000000000000 R09: 0000007e74cf218c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000077e3a
R13: 00007fc99dd5bc90 R14: 00007fc99dd555e0 R15: 0000000000000008
Modules linked in:
---[ end trace ed8204fd7b872ede ]---
RIP: 0010:mm_update_next_owner+0x43a/0x650 kernel/exit.c:453
Code: 48 8b 85 90 05 00 00 48 8d a8 70 fa ff ff 49 39 c5 0f 84 df fe ff ff e8 34 c7 29 00 4c 8d 85 20 04 00 00 4c 89 c0 48 c1 e8 03 <80> 3c 18 00 0f 85 18 01 00 00 4c 8b bd 20 04 00 00 4d 39 e7 75 95
RSP: 0018:ffff8880a1257a98 EFLAGS: 00010206
RAX: 000eeedfffffffd2 RBX: dffffc0000000000 RCX: ffffffff8138bd9e
RDX: 0000000000000000 RSI: ffffffff8138be3c RDI: ffff8880179e4840
RBP: 007776fffffffa70 R08: 007776fffffffe90 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b2858900
R13: ffff88800012f790 R14: ffff888099d62580 R15: ffff888093a46700
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc99c4aefc0 CR3: 000000000fc3a000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 8b 85 90 05 00 00 	mov    0x590(%rbp),%rax
   7:	48 8d a8 70 fa ff ff 	lea    -0x590(%rax),%rbp
   e:	49 39 c5             	cmp    %rax,%r13
  11:	0f 84 df fe ff ff    	je     0xfffffef6
  17:	e8 34 c7 29 00       	callq  0x29c750
  1c:	4c 8d 85 20 04 00 00 	lea    0x420(%rbp),%r8
  23:	4c 89 c0             	mov    %r8,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	0f 85 18 01 00 00    	jne    0x14c
  34:	4c 8b bd 20 04 00 00 	mov    0x420(%rbp),%r15
  3b:	4d 39 e7             	cmp    %r12,%r15
  3e:	75 95                	jne    0xffffffd5