================================================================================ UBSAN: Undefined behaviour in net/netfilter/ipset/ip_set_hash_gen.h:125:6 shift exponent 32 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 21856 Comm: syz-executor.3 Not tainted 4.19.147-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+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 htable_bits net/netfilter/ipset/ip_set_hash_gen.h:125 [inline] hash_netnet_create.cold+0x1a/0x22 net/netfilter/ipset/ip_set_hash_gen.h:1290 ip_set_create+0x70e/0x1380 net/netfilter/ipset/ip_set_core.c:940 nfnetlink_rcv_msg+0xeff/0x1210 net/netfilter/nfnetlink.c:233 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 nfnetlink_rcv+0x1b2/0x41b net/netfilter/nfnetlink.c:565 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc7/0x130 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8f0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e179 Code: 3d b2 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 0b b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc711c70c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000029b40 RCX: 000000000045e179 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffdca7ba5df R14: 00007fc711c719c0 R15: 000000000118cf4c ================================================================================ f2fs_msg: 102 callbacks suppressed F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) audit: type=1400 audit(1601069279.581:37): avc: denied { write } for pid=22108 comm="syz-executor.2" name="task" dev="proc" ino=99428 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 audit: type=1400 audit(1601069279.581:38): avc: denied { add_name } for pid=22108 comm="syz-executor.2" name="22116" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 F2FS-fs (loop0): Failed to get valid F2FS checkpoint audit: type=1400 audit(1601069279.581:39): avc: denied { create } for pid=22108 comm="syz-executor.2" name="22116" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:kernel_t:s0 tclass=file permissive=1 F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 F2FS-fs (loop0): Failed to get valid F2FS checkpoint F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 F2FS-fs (loop0): Failed to get valid F2FS checkpoint F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. loop0: rw=12288, want=8200, limit=20 nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: filesystem on './file0' not supported as upperdir attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device mmap: syz-executor.5 (22409) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst. loop0: rw=12288, want=8200, limit=20 hfs: unable to change iocharset hfs: unable to parse mount options attempt to access beyond end of device hfs: unable to change iocharset loop0: rw=12288, want=4104, limit=20 hfs: unable to parse mount options attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 Cannot find add_set index 0 as target attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 f2fs_msg: 61 callbacks suppressed F2FS-fs (loop0): Failed to get valid F2FS checkpoint netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20 F2FS-fs (loop0): Failed to get valid F2FS checkpoint F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop0: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop0: rw=12288, want=8200, limit=20