loop5: detected capacity change from 0 to 512
general protection fault, probably for non-canonical address 0xe3d2fb001ffff123: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x1e97f800ffff8918-0x1e97f800ffff891f]
CPU: 0 PID: 5848 Comm: syz-executor.5 Not tainted 6.6.0-syzkaller-03860-g5a6a09e97199 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:is_same_group kernel/sched/fair.c:418 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:455 [inline]
RIP: 0010:check_preempt_wakeup_fair+0x2c3/0x640 kernel/sched/fair.c:8153
Code: 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 aa 02 00 00 48 8d bd 98 00 00 00 48 8b 9b 90 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 9e 02 00 00 48 8d bb 98 00 00 00 4c 8b ad 98
RSP: 0018:ffffc9000c057318 EFLAGS: 00010012
RAX: 03d2ff001ffff123 RBX: 0000000000000000 RCX: ffffffff81608750
RDX: 1ffff11004e9cb4b RSI: 0000000000000008 RDI: 1e97f800ffff8918
RBP: 1e97f800ffff8880 R08: 0000000000000000 R09: ffffed10052e03b8
R10: ffff888029701dc7 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000001ffff8880 R14: ffff8880b983c700 R15: dffffc0000000000
FS:  00007f9464bfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020005000 CR3: 0000000069acd000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 wakeup_preempt+0x125/0x320 kernel/sched/core.c:2217
 ttwu_do_activate+0x24f/0xcf0 kernel/sched/core.c:3771
 ttwu_queue kernel/sched/core.c:4021 [inline]
 try_to_wake_up+0x6bc/0x15d0 kernel/sched/core.c:4342
 kick_pool+0x253/0x460 kernel/workqueue.c:1142
 __queue_work+0x5d9/0x1050 kernel/workqueue.c:1800
 queue_work_on+0xed/0x110 kernel/workqueue.c:1834
 queue_work include/linux/workqueue.h:562 [inline]
 loop_queue_work drivers/block/loop.c:897 [inline]
 loop_queue_rq+0x5f0/0x1210 drivers/block/loop.c:1882
 __blk_mq_issue_directly+0xe3/0x270 block/blk-mq.c:2590
 blk_mq_try_issue_directly+0x1ce/0x3b0 block/blk-mq.c:2649
 blk_mq_submit_bio+0x1773/0x1e30 block/blk-mq.c:3022
 __submit_bio+0xfd/0x310 block/blk-core.c:599
 __submit_bio_noacct_mq block/blk-core.c:678 [inline]
 submit_bio_noacct_nocheck+0x847/0xba0 block/blk-core.c:707
 submit_bio_noacct+0x879/0x1b10 block/blk-core.c:801
 __ext4_read_bh fs/ext4/super.c:175 [inline]
 ext4_read_bh_nowait+0x13a/0x1f0 fs/ext4/super.c:187
 ext4_sb_breadahead_unmovable+0xac/0xe0 fs/ext4/super.c:262
 ext4_group_desc_init+0x269/0x17b0 fs/ext4/super.c:4872
 __ext4_fill_super fs/ext4/super.c:5305 [inline]
 ext4_fill_super+0x56d9/0xad80 fs/ext4/super.c:5703
 get_tree_bdev+0x3b5/0x650 fs/super.c:1595
 vfs_get_tree+0x8c/0x370 fs/super.c:1768
 do_new_mount fs/namespace.c:3337 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f946587e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f9464bfdee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9464bfdf80 RCX: 00007f946587e1ea
RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007f9464bfdf40
RBP: 0000000020000040 R08: 00007f9464bfdf80 R09: 0000000000004500
R10: 0000000000004500 R11: 0000000000000246 R12: 0000000020000500
R13: 00007f9464bfdf40 R14: 00000000000004c0 R15: 0000000020000440
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:is_same_group kernel/sched/fair.c:418 [inline]
RIP: 0010:find_matching_se kernel/sched/fair.c:455 [inline]
RIP: 0010:check_preempt_wakeup_fair+0x2c3/0x640 kernel/sched/fair.c:8153
Code: 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 aa 02 00 00 48 8d bd 98 00 00 00 48 8b 9b 90 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 9e 02 00 00 48 8d bb 98 00 00 00 4c 8b ad 98
RSP: 0018:ffffc9000c057318 EFLAGS: 00010012

RAX: 03d2ff001ffff123 RBX: 0000000000000000 RCX: ffffffff81608750
RDX: 1ffff11004e9cb4b RSI: 0000000000000008 RDI: 1e97f800ffff8918
RBP: 1e97f800ffff8880 R08: 0000000000000000 R09: ffffed10052e03b8
R10: ffff888029701dc7 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000001ffff8880 R14: ffff8880b983c700 R15: dffffc0000000000
FS:  00007f9464bfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020005000 CR3: 0000000069acd000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	f8                   	clc
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	0f 85 aa 02 00 00    	jne    0x2bf
  15:	48 8d bd 98 00 00 00 	lea    0x98(%rbp),%rdi
  1c:	48 8b 9b 90 00 00 00 	mov    0x90(%rbx),%rbx
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	0f 85 9e 02 00 00    	jne    0x2d3
  35:	48 8d bb 98 00 00 00 	lea    0x98(%rbx),%rdi
  3c:	4c                   	rex.WR
  3d:	8b                   	.byte 0x8b
  3e:	ad                   	lods   %ds:(%rsi),%eax
  3f:	98                   	cwtl