loop6: detected capacity change from 0 to 40427
Oops: general protection fault, probably for non-canonical address 0xec2c282c2c2c2c2c: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x6161616161616160-0x6161616161616167]
CPU: 0 UID: 0 PID: 14989 Comm: syz.6.1391 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1089 [inline]
RIP: 0010:debug_check_no_obj_freed+0x2b8/0x580 lib/debugobjects.c:1129
Code: e8 0d 18 00 00 41 ff c7 48 8b 44 24 38 48 85 c0 0f 84 a4 02 00 00 49 89 c4 49 89 c5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 4c 89 e7 e8 d8 5c 39 fd 49 8b 04 24 48 89
RSP: 0018:ffffc90003337340 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff888035083018 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90003337220
RBP: ffffc900033374a0 R08: 0000000000000003 R09: fffff52000666e44
R10: dffffc0000000000 R11: fffff52000666e44 R12: 6161616161616161
R13: 0c2c2c2c2c2c2c2c R14: ffff88805f108238 R15: 0000000000000003
FS:  00007f8bbed856c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056335c5a8680 CR3: 0000000032b08000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 free_pages_prepare mm/page_alloc.c:1134 [inline]
 free_unref_folios+0x55d/0x18b0 mm/page_alloc.c:2707
 folios_put_refs+0x76c/0x860 mm/swap.c:990
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x593/0x1820 mm/shmem.c:1112
 shmem_truncate_range mm/shmem.c:1224 [inline]
 shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1352
 evict+0x4e8/0x9a0 fs/inode.c:796
 __dentry_kill+0x20d/0x630 fs/dcache.c:625
 dput+0x19f/0x2b0 fs/dcache.c:867
 __fput+0x60b/0x9f0 fs/file_table.c:458
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8bbdf8498a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007f8bbed84e50 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 00007f8bbdf8498a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000008 R08: 0000000000000000 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f8bbed84eb0 R14: 0000000000005519 R15: 00000000200003c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1089 [inline]
RIP: 0010:debug_check_no_obj_freed+0x2b8/0x580 lib/debugobjects.c:1129
Code: e8 0d 18 00 00 41 ff c7 48 8b 44 24 38 48 85 c0 0f 84 a4 02 00 00 49 89 c4 49 89 c5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 4c 89 e7 e8 d8 5c 39 fd 49 8b 04 24 48 89
RSP: 0018:ffffc90003337340 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff888035083018 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90003337220
RBP: ffffc900033374a0 R08: 0000000000000003 R09: fffff52000666e44
R10: dffffc0000000000 R11: fffff52000666e44 R12: 6161616161616161
R13: 0c2c2c2c2c2c2c2c R14: ffff88805f108238 R15: 0000000000000003
FS:  00007f8bbed856c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056335c5a8680 CR3: 0000000032b08000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	e8 0d 18 00 00       	call   0x1812
   5:	41 ff c7             	inc    %r15d
   8:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
   d:	48 85 c0             	test   %rax,%rax
  10:	0f 84 a4 02 00 00    	je     0x2ba
  16:	49 89 c4             	mov    %rax,%r12
  19:	49 89 c5             	mov    %rax,%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:	4c 89 e7             	mov    %r12,%rdi
  35:	e8 d8 5c 39 fd       	call   0xfd395d12
  3a:	49 8b 04 24          	mov    (%r12),%rax
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89