audit: type=1400 audit(1756494920.910:10): avc:  denied  { block_suspend } for  pid=3970 comm="syz-executor.4" capability=36  scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 1 UID: 0 PID: 3983 Comm: syz-executor.4 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806cf08a80 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: 0000000000000002
RDX: ffff888046d45280 RSI: ffffffff818995b7 RDI: 0000000000000191
RBP: ffff88806cf08cf0 R08: ffff88806cf31490 R09: ffffe8ffffd16638
R10: 0000000000000000 R11: 000000000000002c R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31490 R15: dffffc0000000000
FS:  00007f64ca58f700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000b74e000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_lock_acquire+0x3c2/0x700
 lock_acquire+0xc5/0x2f0
 _raw_spin_lock_irqsave+0x3a/0x60
 hrtimer_interrupt+0xd6/0x830
 __sysvec_apic_timer_interrupt+0xbb/0x330
 sysvec_apic_timer_interrupt+0x6b/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:bio_associate_blkg_from_css+0x6fc/0x1380
Code: 00 00 48 8b 54 24 10 48 8b 9b a8 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 47 0b 00 00 49 89 5f 48 <48> 83 c4 70 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a1 f4 32 ff 41 bc 01
RSP: 0018:ffff88801a4a6ee0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff888016f72800 RCX: ffff88801a4a6ea4
RDX: 1ffff110028394c9 RSI: ffffffff85c1c760 RDI: ffff888046d4567c
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: ffff88801552f800 R15: ffff8880141ca600
 bio_associate_blkg+0x10e/0x2a0
 bio_init+0x2dd/0x570
 bio_alloc_bioset+0x4c5/0x8c0
 ext4_bio_write_folio+0x8d6/0x13c0
 mpage_map_and_submit_buffers+0x545/0x9d0
 ext4_do_writepages+0x2125/0x38b0
 ext4_writepages+0x369/0x7a0
 do_writepages+0x244/0x5c0
 filemap_fdatawrite_wbc+0x10b/0x150
 __filemap_fdatawrite_range+0xb9/0x100
 file_write_and_wait_range+0xcc/0x140
 ext4_sync_file+0x2eb/0xe40
 vfs_fsync_range+0x13d/0x230
 ext4_buffered_write_iter+0x318/0x430
 ext4_file_write_iter+0x9df/0x1990
 do_iter_readv_writev+0x5af/0x910
 vfs_writev+0x2d4/0xcd0
 do_pwritev+0x1ab/0x280
 __x64_sys_pwritev2+0xef/0x160
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f64cd019b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f64ca58f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f64cd12cf60 RCX: 00007f64cd019b19
RDX: 0000000000000003 RSI: 00000000200019c0 RDI: 0000000000000004
RBP: 00007f64cd073f6d R08: 0000000000000000 R09: 0000000000000017
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffffd47764f R14: 00007f64ca58f300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806cf08a80 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: 0000000000000002
RDX: ffff888046d45280 RSI: ffffffff818995b7 RDI: 0000000000000191
RBP: ffff88806cf08cf0 R08: ffff88806cf31490 R09: ffffe8ffffd16638
R10: 0000000000000000 R11: 000000000000002c R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31490 R15: dffffc0000000000
FS:  00007f64ca58f700(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000b74e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	85 a8 fd ff ff 48    	test   %ebp,0x48fffffd(%rax)
   9:	c1 e8 03             	shr    $0x3,%eax
   c:	4c 01 e0             	add    %r12,%rax
   f:	48 89 85 c8 fd ff ff 	mov    %rax,-0x238(%rbp)
  16:	e8 c9 51 ea ff       	callq  0xffea51e4
  1b:	48 8d bb f0 01 00 00 	lea    0x1f0(%rbx),%rdi
  22:	48 89 f8             	mov    %rdi,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e c5 0b 00 00    	jle    0xbff
  3a:	44                   	rex.R
  3b:	8b                   	.byte 0x8b
  3c:	ab                   	stos   %eax,%es:(%rdi)
  3d:	f0                   	lock
  3e:	01                   	.byte 0x1