BUG: unable to handle kernel paging request at ffffe90501acd610
#PF error: [normal kernel read fault]
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 24661 Comm: syz-executor.2 Not tainted 5.1.0-rc4+ #163
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:____cache_alloc mm/slab.c:3122 [inline]
RIP: 0010:__do_cache_alloc mm/slab.c:3351 [inline]
RIP: 0010:slab_alloc mm/slab.c:3386 [inline]
RIP: 0010:kmem_cache_alloc+0x1c9/0x6f0 mm/slab.c:3556
Code: 7d 00 e8 ba 69 89 01 89 c0 4c 03 3c c5 60 90 6b 88 41 8b 17 85 d2 0f 84 98 01 00 00 83 ea 01 41 c7 47 0c 01 00 00 00 41 89 17 <4d> 8b 7c d7 10 4d 85 ff 0f 85 f2 fe ff ff 65 8b 15 ea 56 5a 7e 89
RSP: 0018:ffff888063f1f558 EFLAGS: 00010096
RAX: 0000000000000000 RBX: 0000000000000dc0 RCX: ffffc90005fff000
RDX: 00000000a03d3a3f RSI: ffffffff833198dc RDI: 0000000000000007
RBP: ffff888063f1f5c0 R08: ffff88808f24c100 R09: 0000000000000002
R10: ffff88808f24c9a8 R11: ffff88808f24c100 R12: ffff888216489d80
R13: ffff888216489d80 R14: 0000000000000dc0 R15: ffffe8ffffc30408
FS:  00007f5b846eb700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffe90501acd610 CR3: 000000008e337000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmem_cache_zalloc include/linux/slab.h:732 [inline]
 sctp_chunkify+0x4b/0x290 net/sctp/sm_make_chunk.c:1345
 _sctp_make_chunk+0x15a/0x280 net/sctp/sm_make_chunk.c:1418
 sctp_make_data net/sctp/sm_make_chunk.c:1439 [inline]
 sctp_make_datafrag_empty+0x183/0x250 net/sctp/sm_make_chunk.c:753
 sctp_datamsg_from_user+0x63b/0x11b0 net/sctp/chunk.c:279
 sctp_sendmsg_to_asoc+0x616/0x17b0 net/sctp/socket.c:1942
 sctp_sendmsg+0xda7/0x1800 net/sctp/socket.c:2114
 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xdd/0x130 net/socket.c:661
 sock_write_iter+0x27c/0x3e0 net/socket.c:988
 call_write_iter include/linux/fs.h:1866 [inline]
 new_sync_write+0x4c7/0x760 fs/read_write.c:474
 __vfs_write+0xe4/0x110 fs/read_write.c:487
 vfs_write+0x20c/0x580 fs/read_write.c:549
 ksys_write+0x14f/0x2d0 fs/read_write.c:599
 __do_sys_write fs/read_write.c:611 [inline]
 __se_sys_write fs/read_write.c:608 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:608
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5b846eac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 000000000000ffa7 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5b846eb6d4
R13: 00000000004c8472 R14: 00000000004de818 R15: 00000000ffffffff
Modules linked in:
CR2: ffffe90501acd610
---[ end trace 161b2f0c265f0bd3 ]---
RIP: 0010:____cache_alloc mm/slab.c:3122 [inline]
RIP: 0010:__do_cache_alloc mm/slab.c:3351 [inline]
RIP: 0010:slab_alloc mm/slab.c:3386 [inline]
RIP: 0010:kmem_cache_alloc+0x1c9/0x6f0 mm/slab.c:3556
Code: 7d 00 e8 ba 69 89 01 89 c0 4c 03 3c c5 60 90 6b 88 41 8b 17 85 d2 0f 84 98 01 00 00 83 ea 01 41 c7 47 0c 01 00 00 00 41 89 17 <4d> 8b 7c d7 10 4d 85 ff 0f 85 f2 fe ff ff 65 8b 15 ea 56 5a 7e 89
RSP: 0018:ffff888063f1f558 EFLAGS: 00010096
RAX: 0000000000000000 RBX: 0000000000000dc0 RCX: ffffc90005fff000
RDX: 00000000a03d3a3f RSI: ffffffff833198dc RDI: 0000000000000007
RBP: ffff888063f1f5c0 R08: ffff88808f24c100 R09: 0000000000000002
R10: ffff88808f24c9a8 R11: ffff88808f24c100 R12: ffff888216489d80
R13: ffff888216489d80 R14: 0000000000000dc0 R15: ffffe8ffffc30408
FS:  00007f5b846eb700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffe90501acd610 CR3: 000000008e337000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400