x_tables: duplicate underflow at hook 2 ================================================================================ UBSAN: Undefined behaviour in ./include/net/sch_generic.h:1051:7 shift exponent 129 is too large for 32-bit type 'int' CPU: 1 PID: 14835 Comm: syz-executor.0 Not tainted 4.19.152-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 qdisc_l2t include/net/sch_generic.h:1051 [inline] cbq_update net/sched/sch_cbq.c:567 [inline] cbq_dequeue.cold+0x189/0x18e net/sched/sch_cbq.c:814 dequeue_skb net/sched/sch_generic.c:282 [inline] qdisc_restart net/sched/sch_generic.c:385 [inline] __qdisc_run+0x1b9/0x1680 net/sched/sch_generic.c:403 __dev_xmit_skb net/core/dev.c:3500 [inline] __dev_queue_xmit+0x15ef/0x2ec0 net/core/dev.c:3807 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip_finish_output2+0xc04/0x1640 net/ipv4/ip_output.c:230 ip_finish_output+0x88e/0xd80 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_output+0x203/0x650 net/ipv4/ip_output.c:406 dst_output include/net/dst.h:455 [inline] ip_local_out+0xaf/0x170 net/ipv4/ip_output.c:125 ip_send_skb+0x3e/0xe0 net/ipv4/ip_output.c:1447 udp_send_skb+0x72a/0x1240 net/ipv4/udp.c:848 udp_sendmsg+0x1cdb/0x2530 net/ipv4/udp.c:1135 inet_sendmsg+0x174/0x640 net/ipv4/af_inet.c:798 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: 0033:0x45de59 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f29becb6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002e340 RCX: 000000000045de59 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffd0584f90f R14: 00007f29becb79c0 R15: 000000000118bf2c ================================================================================ x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 2 audit: type=1326 audit(5898117646.873:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15025 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 audit: type=1326 audit(5898117647.623:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15025 comm="syz-executor.4" exe="/root/syz-executor.4" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 audit: type=1400 audit(5898117647.883:17): avc: denied { create } for pid=15083 comm="syz-executor.3" name="pfkey" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:kernel_t:s0 tclass=file permissive=1 xt_check_table_hooks: 1 callbacks suppressed x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 2 audit: type=1326 audit(5898117650.093:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15300 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 netlink: 176 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.2'. audit: type=1326 audit(5898117650.823:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15300 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 x_tables: duplicate underflow at hook 1 audit: type=1326 audit(5898117650.983:20): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15348 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'. audit: type=1326 audit(5898117651.763:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15348 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 audit: type=1800 audit(5898117651.863:22): pid=15387 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.2" name="file0" dev="sda1" ino=16317 res=0 audit: type=1800 audit(5898117651.873:23): pid=15387 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.2" name="file0" dev="sda1" ino=16317 res=0 x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 1 x_tables: duplicate underflow at hook 1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=13573 sclass=netlink_tcpdiag_socket pid=15450 comm=syz-executor.1 x_tables: duplicate underflow at hook 1 tmpfs: Bad mount option e%/}iR @Z 懓a6ZAO%$Qw.HO-_$Z@];(|L6ۉ})DC?">FRG~PqHm34Ih!(.x㝟}'s ,3ZW55>E#>rys tmpfs: Bad mount option e%/}iR @Z 懓a6ZAO%$Qw.HO-_$Z@];(|L6ۉ})DC?">FRG~PqHm34Ih!(.x㝟}'s ,3ZW55>E#>rys xt_check_table_hooks: 2 callbacks suppressed x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 2 x_tables: duplicate underflow at hook 2