------------[ cut here ]------------
WARNING: CPU: 1 PID: 8 at net/core/gen_stats.c:157 gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157
Modules linked in:
CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
RIP: 0010:gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157
Code: 0f 84 69 01 00 00 e8 52 a1 59 fa 31 ff 65 8b 2d b9 ab e4 78 81 e5 00 01 ff 00 89 ee e8 7c a8 59 fa 85 ed 74 10 e8 33 a1 59 fa <0f> 0b 4d 85 f6 0f 84 70 01 00 00 49 c7 c7 64 b1 6e 8d bd ff ff ff
RSP: 0000:ffffc90000dc0b98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888040472020 RCX: 0000000000000100
RDX: ffff888010e45580 RSI: ffffffff871d445d RDI: 0000000000000003
RBP: 0000000000000100 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff871d45d0 R11: 0000000000000000 R12: ffff888028200e08
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa426515c18 CR3: 0000000024f78000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 est_fetch_counters+0xc3/0x160 net/core/gen_estimator.c:69
 est_timer+0x92/0x730 net/core/gen_estimator.c:83
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:crc32c_intel_le_hw_byte arch/x86/crypto/crc32c-intel_glue.c:51 [inline]
RIP: 0010:crc32c_intel_le_hw arch/x86/crypto/crc32c-intel_glue.c:72 [inline]
RIP: 0010:crc32c_pcl_intel_update+0x156/0x320 arch/x86/crypto/crc32c-intel_glue.c:165
Code: e5 34 00 4c 89 e8 4c 89 ea 48 c1 e8 03 83 e2 07 42 0f b6 04 30 38 d0 7f 08 84 c0 0f 85 8c 01 00 00 31 ff 48 89 ee 49 83 c5 01 <f2> 41 0f 38 f0 5d ff e8 9e ea 34 00 4c 8d 65 ff 48 85 ed 75 bc e8
RSP: 0000:ffffc90000cd7770 EFLAGS: 00000282
RAX: 0000000000000002 RBX: 000000001990cf4a RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000020
R10: ffffffff8141fffa R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90000cd7851 R14: dffffc0000000000 R15: 0000000000000002
 crypto_shash_update+0xc4/0x120 crypto/shash.c:131
 ext4_chksum fs/ext4/ext4.h:2452 [inline]
 ext4_inode_csum+0x74b/0x8d0 fs/ext4/inode.c:73
 ext4_inode_csum_set fs/ext4/inode.c:115 [inline]
 ext4_inode_csum_set+0x186/0x480 fs/ext4/inode.c:105
 ext4_do_update_inode fs/ext4/inode.c:5083 [inline]
 ext4_mark_iloc_dirty+0x17ac/0x3b20 fs/ext4/inode.c:5683
 __ext4_mark_inode_dirty+0x222/0x8d0 fs/ext4/inode.c:5879
 ext4_convert_unwritten_extents+0x23f/0x5b0 fs/ext4/extents.c:4781
 ext4_convert_unwritten_io_end_vec+0x122/0x270 fs/ext4/extents.c:4812
 ext4_end_io_end fs/ext4/page-io.c:184 [inline]
 ext4_do_flush_completed_IO fs/ext4/page-io.c:257 [inline]
 ext4_end_io_rsv_work+0x2b3/0x660 fs/ext4/page-io.c:271
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
   0:	e5 34                	in     $0x34,%eax
   2:	00 4c 89 e8          	add    %cl,-0x18(%rcx,%rcx,4)
   6:	4c 89 ea             	mov    %r13,%rdx
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	83 e2 07             	and    $0x7,%edx
  10:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  15:	38 d0                	cmp    %dl,%al
  17:	7f 08                	jg     0x21
  19:	84 c0                	test   %al,%al
  1b:	0f 85 8c 01 00 00    	jne    0x1ad
  21:	31 ff                	xor    %edi,%edi
  23:	48 89 ee             	mov    %rbp,%rsi
  26:	49 83 c5 01          	add    $0x1,%r13
* 2a:	f2 41 0f 38 f0 5d ff 	crc32b -0x1(%r13),%ebx <-- trapping instruction
  31:	e8 9e ea 34 00       	callq  0x34ead4
  36:	4c 8d 65 ff          	lea    -0x1(%rbp),%r12
  3a:	48 85 ed             	test   %rbp,%rbp
  3d:	75 bc                	jne    0xfffffffb
  3f:	e8                   	.byte 0xe8