BUG: unable to handle page fault for address: fffffbfffb11e000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 7093 Comm: syz.3.598 Not tainted 6.12.0-rc1-next-20241003-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffc90000007998 EFLAGS: 00010286
RAX: 0000000000000001 RBX: 1ffffffffb11e000 RCX: ffffffff81cf410f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffd88f0000
RBP: ffffffffffffffff R08: ffffffffd88f0007 R09: 1ffffffffb11e000
R10: dffffc0000000000 R11: fffffbfffb11e000 R12: ffffffffd88f0000
R13: 0000000000000008 R14: dffffc0000000001 R15: fffffbfffb11e001
FS:  00007f3f87d756c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffb11e000 CR3: 00000000273a4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instrument_read include/linux/instrumented.h:26 [inline]
 copy_from_kernel_nofault+0x6f/0x2f0 mm/maccess.c:35
 bpf_probe_read_kernel_common include/linux/bpf.h:2960 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:294 [inline]
 bpf_probe_read_compat+0x10f/0x180 kernel/trace/bpf_trace.c:287
 bpf_prog_737a72641ece9b26+0x43/0x45
 bpf_dispatcher_nop_func include/linux/bpf.h:1257 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2318 [inline]
 bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2359
 trace_kfree include/trace/events/kmem.h:94 [inline]
 kfree+0x378/0x420 mm/slub.c:4723
 slab_free_after_rcu_debug+0x62/0x280 mm/slub.c:4625
 rcu_do_batch kernel/rcu/tree.c:2567 [inline]
 rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
 sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5850
Code: 3c 3b 00 74 08 4c 89 f7 e8 05 4a 8e 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900032f6f60 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200065edfe RCX: ffffc900032f6f03
RDX: 0000000000000001 RSI: ffffffff8c0adc40 RDI: ffffffff8c610c20
RBP: ffffc900032f70a0 R08: ffffffff901d28ef R09: 1ffffffff203a51d
R10: dffffc0000000000 R11: fffffbfff203a51e R12: 1ffff9200065edf8
R13: 0000000000000246 R14: ffffc900032f6ff0 R15: dffffc0000000000
 rcu_lock_release include/linux/rcupdate.h:347 [inline]
 rcu_read_unlock include/linux/rcupdate.h:880 [inline]
 page_ext_put+0xa3/0xc0 mm/page_ext.c:550
 __reset_page_owner+0x2de/0x430 mm/page_owner.c:300
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2674
 check_partition block/partitions/core.c:152 [inline]
 blk_add_partitions block/partitions/core.c:581 [inline]
 bdev_disk_changed+0xfc0/0x13f0 block/partitions/core.c:685
 loop_reread_partitions drivers/block/loop.c:534 [inline]
 loop_set_status+0x70c/0x8f0 drivers/block/loop.c:1303
 lo_ioctl+0xcbc/0x1f50
 blkdev_ioctl+0x57d/0x6a0 block/ioctl.c:693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3f86f7dbfb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f3f87d74d60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3f87d74df0 RCX: 00007f3f86f7dbfb
RDX: 00007f3f87d74f00 RSI: 0000000000004c04 RDI: 0000000000000009
RBP: 0000000000000009 R08: 0000000000000000 R09: 00000000000005b9
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f87d74f00
R13: 0000000000000000 R14: 00007f3f87135f80 R15: 00007ffd472544c8
 </TASK>
Modules linked in:
CR2: fffffbfffb11e000
---[ end trace 0000000000000000 ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189
Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00
RSP: 0018:ffffc90000007998 EFLAGS: 00010286

RAX: 0000000000000001 RBX: 1ffffffffb11e000 RCX: ffffffff81cf410f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffffd88f0000
RBP: ffffffffffffffff R08: ffffffffd88f0007 R09: 1ffffffffb11e000
R10: dffffc0000000000 R11: fffffbfffb11e000 R12: ffffffffd88f0000
R13: 0000000000000008 R14: dffffc0000000001 R15: fffffbfffb11e001
FS:  00007f3f87d756c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffb11e000 CR3: 00000000273a4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 7 bytes skipped:
   0:	df 4f 8d             	fisttps -0x73(%rdi)
   3:	3c 31                	cmp    $0x31,%al
   5:	4c 89 fd             	mov    %r15,%rbp
   8:	4c 29 dd             	sub    %r11,%rbp
   b:	48 83 fd 10          	cmp    $0x10,%rbp
   f:	7f 29                	jg     0x3a
  11:	48 85 ed             	test   %rbp,%rbp
  14:	0f 84 3e 01 00 00    	je     0x158
  1a:	4c 89 cd             	mov    %r9,%rbp
  1d:	48 f7 d5             	not    %rbp
  20:	48 01 dd             	add    %rbx,%rbp
* 23:	41 80 3b 00          	cmpb   $0x0,(%r11) <-- trapping instruction
  27:	0f 85 c9 01 00 00    	jne    0x1f6
  2d:	49 ff c3             	inc    %r11
  30:	48 ff c5             	inc    %rbp
  33:	75 ee                	jne    0x23
  35:	e9                   	.byte 0xe9
  36:	1e                   	(bad)
  37:	01 00                	add    %eax,(%rax)