x_tables: eb_tables: snat target: used from hooks PREROUTING, but only usable from POSTROUTING
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
CPU: 1 PID: 10388 Comm: syz-executor1 Not tainted 4.19.0-rc7+ #281
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:put_pid.part.2+0xb6/0x240 kernel/pid.c:108
kobject: 'loop3' (00000000a88c2f60): kobject_uevent_env
Code: d2 0f 85 89 01 00 00 44 8b 63 04 49 8d 44 24 03 48 c1 e0 04 48 8d 7c 03 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 66 01 00 00 49 83 c4 03 be 04 00 00 00 48 89 df
kobject: 'loop3' (00000000a88c2f60): fill_kobj_path: path = '/devices/virtual/block/loop3'
RSP: 0018:ffff8801c5def1f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff816070d0 RCX: ffffffff8339697e
RDX: 00000001933e9062 RSI: ffffffff8152688e RDI: 0000000c99f48310
RBP: ffff8801c5def280 R08: ffff88018456c640 R09: fffff5200272c200
R10: fffff5200272c200 R11: ffffc90013961003 R12: 00000000d1894120
R13: 1ffff10038bbde3f R14: ffff8801c5def258 R15: dffffc0000000000
FS:  00000000025cc940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000619570 CR3: 00000001af510000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 put_pid+0x1f/0x30 kernel/pid.c:105
 ipc_update_pid ipc/util.h:159 [inline]
 freeary+0x10c8/0x1a40 ipc/sem.c:1167
 free_ipcs+0x9f/0x1c0 ipc/namespace.c:112
 sem_exit_ns+0x20/0x40 ipc/sem.c:237
 free_ipc_ns ipc/namespace.c:120 [inline]
 put_ipc_ns+0x66/0x180 ipc/namespace.c:152
 free_nsproxy+0xcf/0x220 kernel/nsproxy.c:180
 switch_task_namespaces+0xb3/0xd0 kernel/nsproxy.c:229
 exit_task_namespaces+0x17/0x20 kernel/nsproxy.c:234
 do_exit+0x1ad2/0x2610 kernel/exit.c:866
 do_group_exit+0x177/0x440 kernel/exit.c:970
 __do_sys_exit_group kernel/exit.c:981 [inline]
 __se_sys_exit_group kernel/exit.c:979 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:979
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:0000000000a3fc88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000457569
RDX: 0000000000410f40 RSI: 0000000000a44bf0 RDI: 0000000000000045
RBP: 00000000004bcf74 R08: 000000000000000c R09: 0000000000000000
R10: 00000000025cc940 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000173 R15: 0000000000000001
Modules linked in:
---[ end trace dca4f33c5c905129 ]---
RIP: 0010:put_pid.part.2+0xb6/0x240 kernel/pid.c:108
Code: d2 0f 85 89 01 00 00 44 8b 63 04 49 8d 44 24 03 48 c1 e0 04 48 8d 7c 03 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 66 01 00 00 49 83 c4 03 be 04 00 00 00 48 89 df
IPVS: ftp: loaded support on port[0] = 21
RSP: 0018:ffff8801c5def1f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffffff816070d0 RCX: ffffffff8339697e
kobject: 'loop4' (00000000baef0bd9): kobject_uevent_env
RDX: 00000001933e9062 RSI: ffffffff8152688e RDI: 0000000c99f48310
RBP: ffff8801c5def280 R08: ffff88018456c640 R09: fffff5200272c200
kobject: 'loop4' (00000000baef0bd9): fill_kobj_path: path = '/devices/virtual/block/loop4'
R10: fffff5200272c200 R11: ffffc90013961003 R12: 00000000d1894120
R13: 1ffff10038bbde3f R14: ffff8801c5def258 R15: dffffc0000000000
FS:  00000000025cc940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
kobject: 'lo' (00000000bc1eaed5): kobject_add_internal: parent: 'net', set: 'devices'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'lo' (00000000bc1eaed5): kobject_uevent_env
CR2: 000000000045753f CR3: 000000000926a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop5' (000000007f7f04e6): kobject_uevent_env