BUG: unable to handle page fault for address: ffffffffff600000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 6e12067 P4D 6e12067 PUD 6e14067 PMD 6e16067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10763 Comm: syz-executor.3 Not tainted 6.1.78-syzkaller-00137-gc36abc6d4212 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36
Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 ab 39 d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc900082bf050 EFLAGS: 00010257
RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff88810f1f3cc0
RDX: ffff88810f1f4860 RSI: 0000000000000008 RDI: 0000000000000007
RBP: ffffc900082bf088 R08: ffffffff81a33e85 R09: ffffed1021e3e799
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000000 R14: ffffc900082bf0e8 R15: ffffc900082bf0f0
FS:  00007f399e9d86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000011a6fd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_probe_read_kernel_common kernel/trace/bpf_trace.c:230 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:294 [inline]
 bpf_probe_read_compat+0x112/0x180 kernel/trace/bpf_trace.c:287
 bpf_prog_baa065642a502c00+0x64/0x68
 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run include/linux/filter.h:607 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2275 [inline]
 bpf_trace_run6+0x1ea/0x350 kernel/trace/bpf_trace.c:2318
 __bpf_trace_ext4_ext_remove_space_done+0x4c/0x60 include/trace/events/ext4.h:2089
 trace_ext4_ext_remove_space_done include/trace/events/ext4.h:2089 [inline]
 ext4_ext_remove_space+0x4d4e/0x4f50 fs/ext4/extents.c:3032
 ext4_ext_truncate+0x1f4/0x320 fs/ext4/extents.c:4417
 ext4_truncate+0x96c/0xfb0 fs/ext4/inode.c:4279
 ext4_setattr+0x1107/0x1a50 fs/ext4/inode.c:5586
 notify_change+0xd53/0x1010 fs/attr.c:499
 do_truncate+0x21c/0x300 fs/open.c:66
 handle_truncate fs/namei.c:3286 [inline]
 do_open fs/namei.c:3631 [inline]
 path_openat+0x2726/0x2d60 fs/namei.c:3784
 do_filp_open+0x230/0x480 fs/namei.c:3811
 do_sys_openat2+0x13f/0x850 fs/open.c:1341
 do_sys_open fs/open.c:1357 [inline]
 __do_sys_openat fs/open.c:1373 [inline]
 __se_sys_openat fs/open.c:1368 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1368
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f399dc7cf69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f399e9d80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f399ddb3fa0 RCX: 00007f399dc7cf69
RDX: 0000000000007a05 RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007f399dcda706 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001700 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f399ddb3fa0 R15: 00007fff57ac1aa8
 </TASK>
Modules linked in:
CR2: ffffffffff600000
---[ end trace 0000000000000000 ]---
RIP: 0010:copy_from_kernel_nofault+0x86/0x2d0 mm/maccess.c:36
Code: 48 89 55 d0 0f 85 de 01 00 00 ff 02 bf 07 00 00 00 4c 89 ee e8 ab 39 d2 ff 49 83 fd 07 76 58 4d 89 fe 49 83 c7 08 49 83 c5 f8 <49> 8b 1c 24 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc900082bf050 EFLAGS: 00010257
RAX: 0000000000000002 RBX: 00007ffffffff000 RCX: ffff88810f1f3cc0
RDX: ffff88810f1f4860 RSI: 0000000000000008 RDI: 0000000000000007
RBP: ffffc900082bf088 R08: ffffffff81a33e85 R09: ffffed1021e3e799
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffff600000
R13: 0000000000000000 R14: ffffc900082bf0e8 R15: ffffc900082bf0f0
FS:  00007f399e9d86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600000 CR3: 000000011a6fd000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 55 d0          	mov    %rdx,-0x30(%rbp)
   4:	0f 85 de 01 00 00    	jne    0x1e8
   a:	ff 02                	incl   (%rdx)
   c:	bf 07 00 00 00       	mov    $0x7,%edi
  11:	4c 89 ee             	mov    %r13,%rsi
  14:	e8 ab 39 d2 ff       	call   0xffd239c4
  19:	49 83 fd 07          	cmp    $0x7,%r13
  1d:	76 58                	jbe    0x77
  1f:	4d 89 fe             	mov    %r15,%r14
  22:	49 83 c7 08          	add    $0x8,%r15
  26:	49 83 c5 f8          	add    $0xfffffffffffffff8,%r13
* 2a:	49 8b 1c 24          	mov    (%r12),%rbx <-- trapping instruction
  2e:	4c 89 f0             	mov    %r14,%rax
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  3c:	fc ff df
  3f:	80                   	.byte 0x80