------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:157 at inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:157, CPU#2: udevd/5334
Modules linked in:
CPU: 2 UID: 0 PID: 5334 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:157
Code: c9 4e ff e9 06 fd ff ff e8 ca 9a 01 f8 90 0f 0b 90 e9 35 fe ff ff e8 bc 9a 01 f8 90 0f 0b 90 e9 c5 fe ff ff e8 ae 9a 01 f8 90 <0f> 0b 90 e9 04 ff ff ff e8 a0 9a 01 f8 90 0f 0b 90 e9 65 fe ff ff
RSP: 0018:ffffc90000648d98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802bb7d500 RCX: ffffffff8a06fd17
RDX: ffff88802f83a480 RSI: ffffffff8a06fe12 RDI: ffff88802f83a480
RBP: 0000000000000090 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000090 R11: 0000000000000000 R12: ffff88802bb7d500
R13: ffff88802bb7d590 R14: ffffffff81ee5bad R15: 0000000000000000
FS:  00007f245fd6e880(0000) GS:ffff8880d6552000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4c697e96c0 CR3: 0000000035726000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 __sk_destruct+0x85/0xbb0 net/core/sock.c:2350
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
 handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:stack_access_ok+0x53/0x1d0 arch/x86/kernel/unwind_orc.c:409
Code: c0 74 08 3c 03 0f 8e 3f 01 00 00 8b 13 85 d2 74 65 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 24 01 00 00 48 8d 7b 10 4c 8b 6b 08 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900037675c8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90003767668 RCX: ffffffff91867dd6
RDX: 1ffff920006ecece RSI: ffffc900037679c0 RDI: ffffc90003767670
RBP: ffffc900037679c0 R08: ffffffff91867dda R09: 0000000000000007
R10: 0000000000000200 R11: 00000000000174b4 R12: 0000000000000008
R13: ffffc90003767668 R14: ffffc900037679c8 R15: ffffc9000376769c
 deref_stack_reg arch/x86/kernel/unwind_orc.c:419 [inline]
 unwind_next_frame+0xb0b/0x1ea0 arch/x86/kernel/unwind_orc.c:600
 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2670 [inline]
 slab_free mm/slub.c:6082 [inline]
 kfree+0x1f6/0x6b0 mm/slub.c:6399
 tomoyo_path_perm+0x29c/0x460 security/tomoyo/file.c:847
 security_inode_getattr+0x116/0x280 security/security.c:1869
 vfs_getattr fs/stat.c:259 [inline]
 vfs_statx_path fs/stat.c:299 [inline]
 vfs_statx+0x11f/0x3f0 fs/stat.c:356
 vfs_fstatat+0x77/0xe0 fs/stat.c:373
 __do_sys_newfstatat+0x9d/0x120 fs/stat.c:538
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f245f711b0a
Code: 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 8b 15 b9 f2 0d 00 f7
RSP: 002b:00007ffcbd416628 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007ffcbd416ac0 RCX: 00007f245f711b0a
RDX: 00007ffcbd416630 RSI: 00007ffcbd416ac0 RDI: 00000000ffffff9c
RBP: 00005639429862c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcbd4166c0
R13: 000056393327e100 R14: 0000000000000000 R15: 00007ffcbd4171c0
 </TASK>
----------------
Code disassembly (best guess):
   0:	c0 74 08 3c 03       	shlb   $0x3,0x3c(%rax,%rcx,1)
   5:	0f 8e 3f 01 00 00    	jle    0x14a
   b:	8b 13                	mov    (%rbx),%edx
   d:	85 d2                	test   %edx,%edx
   f:	74 65                	je     0x76
  11:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  18:	fc ff df
  1b:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
  1f:	48 89 fa             	mov    %rdi,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
* 2a:	0f 85 24 01 00 00    	jne    0x154 <-- trapping instruction
  30:	48 8d 7b 10          	lea    0x10(%rbx),%rdi
  34:	4c 8b 6b 08          	mov    0x8(%rbx),%r13
  38:	48                   	rex.W
  39:	b8 00 00 00 00       	mov    $0x0,%eax
  3e:	00 fc                	add    %bh,%ah