BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1355 in_atomic(): 0, irqs_disabled(): 0, pid: 32668, name: syz-executor.2 __request_module: 712 callbacks suppressed request_module: kmod_concurrent_max (0) close to 0 (max_modprobes: 50), for module net-pf-0, throttling... 3 locks held by syz-executor.2/32668: #0: 00000000a0b62b46 (&table[i].mutex){+.+.}, at: nfnl_lock net/netfilter/nfnetlink.c:62 [inline] #0: 00000000a0b62b46 (&table[i].mutex){+.+.}, at: nfnetlink_rcv_msg+0x98d/0xf60 net/netfilter/nfnetlink.c:223 #1: 00000000481787d8 (rcu_read_lock){....}, at: ctnetlink_create_conntrack+0x199/0x12c0 net/netfilter/nf_conntrack_netlink.c:1929 #2: 000000004eaac2a7 (&mm->mmap_sem){++++}, at: __do_page_fault+0x3e2/0xde0 arch/x86/mm/fault.c:1341 Preemption disabled at: [] rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1076 [inline] [] rcu_lockdep_current_cpu_online+0x32/0x1b0 kernel/rcu/tree.c:1068 CPU: 0 PID: 32668 Comm: syz-executor.2 Not tainted 4.19.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6196 __do_page_fault+0x40d/0xde0 arch/x86/mm/fault.c:1355 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:0x40 Code: Bad RIP value. RSP: 0018:ffff888218957190 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b5dd000 RDX: 1ffff11042cde0f7 RSI: ffff888218957210 RDI: ffff888218957260 RBP: ffff88802405d040 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 000000006f3f71dd R12: 0000000000000000 R13: 0000000000000001 R14: ffff8882166f0780 R15: ffff888218957210 BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 PGD 20fc55067 P4D 20fc55067 PUD 20fc51067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 32668 Comm: syz-executor.2 Tainted: G W 4.19.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x40 Code: Bad RIP value. RSP: 0018:ffff888218957190 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b5dd000 RDX: 1ffff11042cde0f7 RSI: ffff888218957210 RDI: ffff888218957260 RBP: ffff88802405d040 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 000000006f3f71dd R12: 0000000000000000 R13: 0000000000000001 R14: ffff8882166f0780 R15: ffff888218957210 FS: 00007f1e88931700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000016 CR3: 00000001ed86c000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: CR2: 0000000000000040 ---[ end trace 1697d496d1f4a571 ]--- RIP: 0010:0x40 Code: Bad RIP value. RSP: 0018:ffff888218957190 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000b5dd000 RDX: 1ffff11042cde0f7 RSI: ffff888218957210 RDI: ffff888218957260 RBP: ffff88802405d040 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 000000006f3f71dd R12: 0000000000000000 R13: 0000000000000001 R14: ffff8882166f0780 R15: ffff888218957210 FS: 00007f1e88931700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000016 CR3: 00000001ed86c000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400