syzbot

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WARNING: CPU: 0 PID: 4162 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 4162 Comm: syz-executor328 Not tainted 5.15.157-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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 8b c4 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 c4 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:ffffc90000007b08 EFLAGS: 00010046
RAX: ffffffff81aa986c RBX: 0000000000000000 RCX: ffff8880761fbb80
RDX: 0000000080000102 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aa977d R09: fffffbfff1f7ee19
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000007b68
FS:  000055555736a380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001b40 CR3: 000000001eb0d000 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_29c38f5fdb04ca7d+0x3a/0x330
 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:1880 [inline]
 bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1917
 trace_hrtimer_start include/trace/events/timer.h:199 [inline]
 debug_activate kernel/time/hrtimer.c:476 [inline]
 enqueue_hrtimer+0x324/0x390 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1703 [inline]
 __hrtimer_run_queues+0x6b6/0xcf0 kernel/time/hrtimer.c:1750
 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1767
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:file_ctx security/apparmor/include/file.h:33 [inline]
RIP: 0010:apparmor_file_free_security+0x29/0xe0 security/apparmor/lsm.c:458
Code: 90 55 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 4a 69 b4 fd 48 81 c3 a8 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 3d 41 fe fd 48 63 2d 0a 10 6a 08 48 03 2b 74 5b
RSP: 0018:ffffc90002cb7d98 EFLAGS: 00000246
RAX: 1ffff1100f0ad485 RBX: ffff88807856a428 RCX: ffff8880761fbb80
RDX: 0000000000000000 RSI: ffffffff8a8b3c20 RDI: ffff88807856a280
RBP: ffff8880129cf0a0 R08: dffffc0000000000 R09: fffffbfff1bc8c2e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807856a304 R14: dffffc0000000000 R15: dffffc0000000000
 security_file_free+0x42/0xe0 security/security.c:1544
 file_free fs/file_table.c:55 [inline]
 __fput+0x620/0x890 fs/file_table.c:293
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4348caa7c0
Code: 00 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d4 e8 10 2c 00 00 80 3d c1 e8 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
RSP: 002b:00007ffebaa8eb08 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f4348caa7c0
RDX: 0000000000000010 RSI: 0000000020001b40 RDI: 0000000000000003
RBP: 0000000000000000 R08: 000055555736afc0 R09: 000055555736afc0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffebaa8eb3c R14: 00007ffebaa8eb80 R15: 00007ffebaa8eb70
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	55                   	push   %rbp
   2:	41 56                	push   %r14
   4:	53                   	push   %rbx
   5:	48 89 fb             	mov    %rdi,%rbx
   8:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
   f:	fc ff df
  12:	e8 4a 69 b4 fd       	call   0xfdb46961
  17:	48 81 c3 a8 01 00 00 	add    $0x1a8,%rbx
  1e:	48 89 d8             	mov    %rbx,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
* 2a:	74 08                	je     0x34 <-- trapping instruction
  2c:	48 89 df             	mov    %rbx,%rdi
  2f:	e8 3d 41 fe fd       	call   0xfdfe4171
  34:	48 63 2d 0a 10 6a 08 	movslq 0x86a100a(%rip),%rbp        # 0x86a1045
  3b:	48 03 2b             	add    (%rbx),%rbp
  3e:	74 5b                	je     0x9b