------------[ cut here ]------------
WARNING: CPU: 0 PID: 4899 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4899 Comm: syz.0.235 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc900000079c8 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff8880754c1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7819
R10: fffffbfff1ff7819 R11: 1ffffffff1ff7818 R12: ffff8880754c3548
R13: dffffc0000000000 R14: ffffc90000007a28 R15: 0000000000000000
FS:  0000555558d62500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f141ba06000 CR3: 0000000074555000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_690f12e098ef46de+0x32/0xed4
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
 __bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x25f/0x2a0 mm/slub.c:4554
 bdev_free_inode+0x62/0x1f0 block/bdev.c:405
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:find_stack lib/stackdepot.c:207 [inline]
RIP: 0010:stack_depot_save+0x153/0x440 lib/stackdepot.c:280
Code: c1 c0 04 44 29 c6 31 f1 c1 c6 0e 29 f1 31 cd c1 c1 18 29 cd 4c 8b 2d f4 7c 42 12 41 89 ee 41 81 e6 ff ff 0f 00 4f 8b 7c f5 00 <4d> 85 ff 74 58 89 d9 eb 08 4d 8b 3f 4d 85 ff 74 4c 41 39 6f 08 75
RSP: 0018:ffffc9000333fad0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 0000000009648799
RDX: 0000000000000800 RSI: 000000003914c704 RDI: ffffc9000333fb30
RBP: 00000000159ca1cb R08: 00000000b86b06d7 R09: 0000000000000003
R10: 0000000001d01243 R11: 0000000020058dc7 R12: dffffc0000000000
R13: ffff88823b000000 R14: 00000000000ca1cb R15: ffff88805ed656d0
 kasan_save_stack+0x4b/0x60 mm/kasan/common.c:40
 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348
 task_work_add+0x2f/0x1d0 kernel/task_work.c:38
 fput_many+0xde/0x1a0 fs/file_table.c:367
 filp_close+0x10e/0x150 fs/open.c:1369
 __range_close fs/file.c:692 [inline]
 __close_range+0x208/0x4d0 fs/file.c:747
 __do_sys_close_range fs/open.c:1408 [inline]
 __se_sys_close_range fs/open.c:1405 [inline]
 __x64_sys_close_range+0x76/0x80 fs/open.c:1405
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f141b7e5ba9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc46106bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00000000000180f3 RCX: 00007f141b7e5ba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f141ba2eda0 R08: 0000000000000001 R09: 0000000546106eef
R10: 0000001b31220000 R11: 0000000000000246 R12: 00007f141ba2cfac
R13: 00007f141ba2cfa0 R14: ffffffffffffffff R15: 00007ffc46106d10
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 c0 04             	rol    $0x4,%eax
   3:	44 29 c6             	sub    %r8d,%esi
   6:	31 f1                	xor    %esi,%ecx
   8:	c1 c6 0e             	rol    $0xe,%esi
   b:	29 f1                	sub    %esi,%ecx
   d:	31 cd                	xor    %ecx,%ebp
   f:	c1 c1 18             	rol    $0x18,%ecx
  12:	29 cd                	sub    %ecx,%ebp
  14:	4c 8b 2d f4 7c 42 12 	mov    0x12427cf4(%rip),%r13        # 0x12427d0f
  1b:	41 89 ee             	mov    %ebp,%r14d
  1e:	41 81 e6 ff ff 0f 00 	and    $0xfffff,%r14d
  25:	4f 8b 7c f5 00       	mov    0x0(%r13,%r14,8),%r15
* 2a:	4d 85 ff             	test   %r15,%r15 <-- trapping instruction
  2d:	74 58                	je     0x87
  2f:	89 d9                	mov    %ebx,%ecx
  31:	eb 08                	jmp    0x3b
  33:	4d 8b 3f             	mov    (%r15),%r15
  36:	4d 85 ff             	test   %r15,%r15
  39:	74 4c                	je     0x87
  3b:	41 39 6f 08          	cmp    %ebp,0x8(%r15)
  3f:	75                   	.byte 0x75