Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 11276 Comm: syz.4.1835 Not tainted 6.10.0-syzkaller-12246-g786c8248dbd3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__dev_flush+0x5b/0x160
Code: 48 89 ef e8 47 d6 3e 00 48 8b 5d 00 48 39 eb 0f 84 ff 00 00 00 48 89 2c 24 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 df e8 15 d6 3e 00 48 8b 03 48 89 44
RSP: 0018:ffffc90000007af0 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffff888022bada00
RDX: 0000000080000100 RSI: 0000000000000010 RDI: ffffc9000495f810
RBP: ffffc9000495f810 R08: ffffffff89697d9a R09: 1ffffffff1f5f4bd
R10: dffffc0000000000 R11: fffffbfff1f5f4be R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000010 R15: ffffc9000495f810
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00758ce2d8 CR3: 000000006a424000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 xdp_do_check_flushed+0x129/0x240 net/core/filter.c:4300
 __napi_poll+0xe4/0x490 net/core/dev.c:6774
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6962
 handle_softirqs+0x2c6/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:gup_fast mm/gup.c:3338 [inline]
RIP: 0010:gup_fast_fallback+0x2349/0x2b50 mm/gup.c:3378
Code: 02 00 00 41 39 dc 75 4c e8 e4 94 b4 ff 48 8b 7c 24 30 4c 89 fe e8 57 1e ff ff eb 19 e8 d0 94 b4 ff fb 83 bc 24 94 00 00 00 00 <0f> 85 6a ff ff ff e8 bc 94 b4 ff 48 8b 44 24 28 42 0f b6 04 28 84
RSP: 0018:ffffc9000495f220 EFLAGS: 00000246
RAX: ffffffff81deeeb0 RBX: 0000000000000000 RCX: ffff888022bada00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000495f530 R08: ffffffff81deedf4 R09: 1ffffffff1f5f4bd
R10: dffffc0000000000 R11: fffffbfff1f5f4be R12: ffffea00017194c0
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88802f3a5ab0
 get_user_pages_fast+0xcc/0x160 mm/gup.c:3463
 get_futex_key+0x1e2/0x1050 kernel/futex/core.c:276
 futex_wake+0x12a/0x5c0 kernel/futex/waitwake.c:166
 do_futex+0x392/0x560 kernel/futex/syscalls.c:107
 mm_release+0x193/0x430 kernel/fork.c:1621
 exit_mm+0xb0/0x310 kernel/exit.c:544
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 get_signal+0x16a1/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f55b1575f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f55b22600f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f55b1705f68 RCX: 00007f55b1575f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f55b1705f68
RBP: 00007f55b1705f60 R08: 00007f55b22606c0 R09: 00007f55b22606c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55b1705f6c
R13: 000000000000000b R14: 00007ffd9298c220 R15: 00007ffd9298c308
 </TASK>
Modules linked in:
vkms_vblank_simulate: vblank timer overrun
---[ end trace 0000000000000000 ]---
RIP: 0010:__dev_flush+0x5b/0x160
Code: 48 89 ef e8 47 d6 3e 00 48 8b 5d 00 48 39 eb 0f 84 ff 00 00 00 48 89 2c 24 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 df e8 15 d6 3e 00 48 8b 03 48 89 44
RSP: 0018:ffffc90000007af0 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffff888022bada00
RDX: 0000000080000100 RSI: 0000000000000010 RDI: ffffc9000495f810
RBP: ffffc9000495f810 R08: ffffffff89697d9a R09: 1ffffffff1f5f4bd
R10: dffffc0000000000 R11: fffffbfff1f5f4be R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000010 R15: ffffc9000495f810
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00758ce2d8 CR3: 000000006a424000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	48 89 ef             	mov    %rbp,%rdi
   3:	e8 47 d6 3e 00       	call   0x3ed64f
   8:	48 8b 5d 00          	mov    0x0(%rbp),%rbx
   c:	48 39 eb             	cmp    %rbp,%rbx
   f:	0f 84 ff 00 00 00    	je     0x114
  15:	48 89 2c 24          	mov    %rbp,(%rsp)
  19:	49 89 dd             	mov    %rbx,%r13
  1c:	49 c1 ed 03          	shr    $0x3,%r13
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 80 7c 05 00 00    	cmpb   $0x0,0x0(%r13,%rax,1) <-- trapping instruction
  30:	74 08                	je     0x3a
  32:	48 89 df             	mov    %rbx,%rdi
  35:	e8 15 d6 3e 00       	call   0x3ed64f
  3a:	48 8b 03             	mov    (%rbx),%rax
  3d:	48                   	rex.W
  3e:	89                   	.byte 0x89
  3f:	44                   	rex.R