------------[ cut here ]------------
WARNING: CPU: 0 PID: 3545 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 3545 Comm: udevd Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c6 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c6 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc900000079b0 EFLAGS: 00010046
RAX: ffffffff81aaacec RBX: 0000000000000000 RCX: ffff88807da51dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaabfd R09: ffffed100fb4a3b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000020a50000
R13: 0000000000000008 R14: 0000000020a50000 R15: ffffc90000007a28
FS:  00007fb952ce4c80(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa967e67bac CR3: 000000007d5b3000 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_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
 bpf_prog_2dbf287f85779254+0x3d/0x910
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [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_run1+0x168/0x2f0 kernel/trace/bpf_trace.c:1914
 trace_workqueue_activate_work+0x150/0x1b0 include/trace/events/workqueue.h:59
 __queue_work+0x89e/0xd00 kernel/workqueue.c:1521
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1491 [inline]
 __run_timers+0x6a8/0x890 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 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:___might_sleep+0x35/0x6a0 kernel/sched/core.c:9595
Code: 54 53 48 83 e4 e0 48 81 ec e0 00 00 00 41 89 d4 89 74 24 10 48 89 7c 24 20 65 48 8b 04 25 28 00 00 00 48 89 84 24 c0 00 00 00 <49> be 00 00 00 00 00 fc ff df 48 c7 44 24 40 b3 8a b5 41 48 c7 44
RSP: 0018:ffffc90002e376a0 EFLAGS: 00000286
RAX: 2de883fd64d0e100 RBX: ffffffff8a99a740 RCX: ffff88807da51dc0
RDX: 0000000000000000 RSI: 00000000000005d9 RDI: ffffffff8a8b1de0
RBP: ffffc90002e377b8 R08: ffffffff81fcb940 R09: fffffbfff1bd2d3e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff888020af31a0 R14: ffff888140701000 R15: ffffffff8ca52240
 down_read+0x21/0x2e0 kernel/locking/rwsem.c:1497
 kernfs_dop_revalidate+0x87/0x4a0 fs/kernfs/dir.c:1090
 d_revalidate fs/namei.c:856 [inline]
 lookup_fast+0x37b/0x7b0 fs/namei.c:1624
 walk_component+0x115/0x610 fs/namei.c:1972
 link_path_walk+0x642/0xd90
 path_lookupat+0xa9/0x450 fs/namei.c:2454
 filename_lookup+0x230/0x5c0 fs/namei.c:2484
 user_path_at_empty+0x40/0x180 fs/namei.c:2883
 do_readlinkat+0x114/0x3a0 fs/stat.c:442
 __do_sys_readlink fs/stat.c:475 [inline]
 __se_sys_readlink fs/stat.c:472 [inline]
 __x64_sys_readlink+0x7b/0x90 fs/stat.c:472
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb952e10d47
Code: 73 01 c3 48 8b 0d e1 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fff765e4648 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007fff765e4658 RCX: 00007fb952e10d47
RDX: 0000000000000400 RSI: 00007fff765e4658 RDI: 00007fff765e4b38
RBP: 0000000000000400 R08: 0000563a13c82dc4 R09: 0000000000000000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fff765e4b38
R13: 00007fff765e4aa8 R14: 0000563a13c5f910 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	54                   	push   %rsp
   1:	53                   	push   %rbx
   2:	48 83 e4 e0          	and    $0xffffffffffffffe0,%rsp
   6:	48 81 ec e0 00 00 00 	sub    $0xe0,%rsp
   d:	41 89 d4             	mov    %edx,%r12d
  10:	89 74 24 10          	mov    %esi,0x10(%rsp)
  14:	48 89 7c 24 20       	mov    %rdi,0x20(%rsp)
  19:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  20:	00 00
  22:	48 89 84 24 c0 00 00 	mov    %rax,0xc0(%rsp)
  29:	00
* 2a:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14 <-- trapping instruction
  31:	fc ff df
  34:	48 c7 44 24 40 b3 8a 	movq   $0x41b58ab3,0x40(%rsp)
  3b:	b5 41
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	44                   	rex.R