kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 9640 Comm: syz-executor.2 Not tainted 4.14.231-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a4800640 task.stack: ffff88803f7f0000
RIP: 0010:__lock_acquire+0x1cc/0x3f20 kernel/locking/lockdep.c:3369
RSP: 0018:ffff8880ba507b98 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8880a4800640 R12: 0000000000000018
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8bebbd40
FS:  0000000002bf8400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 00000000a8fe4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:176
 spin_lock_bh include/linux/spinlock.h:322 [inline]
 rt6_uncached_list_del net/ipv6/route.c:144 [inline]
 ip6_dst_destroy+0x108/0x390 net/ipv6/route.c:402
 dst_destroy+0xc0/0x390 net/core/dst.c:129
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:630 [inline]
RIP: 0010:find_get_entry+0x5b/0x630 mm/filemap.c:1352
RSP: 0018:ffff88803f7f7a48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff8880a4800640 RBX: ffff8880b1fca528 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880a4800ec4
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000020012
R10: ffff8880a4800f18 R11: ffff8880a4800640 R12: 0000000000000000
R13: ffff8880b1fca528 R14: dffffc0000000000 R15: 00000000000003c0
 pagecache_get_page+0x53/0xab0 mm/filemap.c:1465
 find_get_page_flags include/linux/pagemap.h:282 [inline]
 __find_get_block_slow fs/buffer.c:214 [inline]
 __find_get_block+0x4cc/0xc40 fs/buffer.c:1357
 sb_find_get_block include/linux/buffer_head.h:346 [inline]
 recently_deleted fs/ext4/ialloc.c:693 [inline]
 find_inode_bit+0x1fb/0x4e0 fs/ext4/ialloc.c:733
 __ext4_new_inode+0x1379/0x4eb0 fs/ext4/ialloc.c:925
 ext4_symlink+0x2cf/0xaa0 fs/ext4/namei.c:3174
 vfs_symlink+0x3ce/0x620 fs/namei.c:4156
 SYSC_symlinkat fs/namei.c:4183 [inline]
 SyS_symlinkat+0x1dc/0x240 fs/namei.c:4163
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465d67
RSP: 002b:00007ffdc14a20e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000465d67
RDX: 00007ffdc14a21d7 RSI: 00000000004bfa9c RDI: 00007ffdc14a21c0
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdc14a1f80
R10: 00007ffdc14a1e37 R11: 0000000000000206 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdc14a21c0
Code: 18 00 00 00 00 48 81 c4 80 01 00 00 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 67 2a 00 00 49 81 3c 24 a0 77 2e 8b 0f 84 5f 
RIP: __lock_acquire+0x1cc/0x3f20 kernel/locking/lockdep.c:3369 RSP: ffff8880ba507b98
---[ end trace e78f4e9003af3219 ]---