WARNING: CPU: 0 PID: 7309 at mm/vmalloc.c:1514 __vunmap+0x350/0x400 mm/vmalloc.c:1514
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7309 Comm: syz-executor.4 Not tainted 4.19.90-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+0x197/0x210 lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x53 kernel/panic.c:541
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:__vunmap+0x350/0x400 mm/vmalloc.c:1514
Code: 76 d0 ff 4c 89 ee 48 c7 c7 c0 4d b3 87 e8 a6 06 a4 ff 0f 0b eb b2 e8 5f 76 d0 ff 4c 89 ee 48 c7 c7 20 4e b3 87 e8 8e 06 a4 ff <0f> 0b eb 9a 4c 89 ff e8 64 0c 08 00 e9 3d ff ff ff 48 8b 7d c0 e8
RSP: 0018:ffff88809ed37310 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 000000000000f1a6 RSI: ffffffff8155bb16 RDI: ffffed1013da6e54
RBP: ffff88809ed37350 R08: ffff88809baac380 R09: ffffed1015d05079
R10: ffffed1015d05078 R11: ffff8880ae8283c7 R12: 0000000000000000
R13: ffffc90015a69000 R14: ffffe8ffffc31d90 R15: 0000607f51431d90
 vfree+0x6a/0x100 mm/vmalloc.c:1597
 ipcomp_free_scratches+0xc0/0x150 net/xfrm/xfrm_ipcomp.c:216
 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:325 [inline]
 ipcomp_init_state+0x76d/0xa10 net/xfrm/xfrm_ipcomp.c:377
 ipcomp4_init_state+0xc5/0x830 net/ipv4/ipcomp.c:137
 __xfrm_init_state+0x54f/0xef0 net/xfrm/xfrm_state.c:2314
 xfrm_state_construct net/xfrm/xfrm_user.c:625 [inline]
 xfrm_add_sa+0x1f6c/0x351c net/xfrm/xfrm_user.c:682
 xfrm_user_rcv_msg+0x450/0x720 net/xfrm/xfrm_user.c:2677
 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454
 xfrm_netlink_rcv+0x70/0x90 net/xfrm/xfrm_user.c:2685
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908
kobject: '0000:0000:0000.0014' (00000000bc72220d): kobject_add_internal: parent: 'uhid', set: 'devices'
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:632
 ___sys_sendmsg+0x803/0x920 net/socket.c:2115
kobject: '0000:0000:0000.0014' (00000000bc72220d): kobject_uevent_env
kobject: '0000:0000:0000.0014' (00000000bc72220d): fill_kobj_path: path = '/devices/virtual/misc/uhid/0000:0000:0000.0014'
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153
hid-generic 0000:0000:0000.0014: item fetching failed at offset 0/1
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a919
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8f3f3bcc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f3f3bd6d4
R13: 00000000004c9a63 R14: 00000000004e1828 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..