================================================================================ UBSAN: Undefined behaviour in net/sched/cls_tcindex.c:238:29 shift exponent 511 is too large for 32-bit type 'int' CPU: 1 PID: 15047 Comm: syz-executor.2 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 valid_perfect_hash net/sched/cls_tcindex.c:238 [inline] tcindex_set_parms.cold+0x170/0x22f net/sched/cls_tcindex.c:398 tcindex_change+0x220/0x2f3 net/sched/cls_tcindex.c:518 tc_new_tfilter+0xb38/0x1570 net/sched/cls_api.c:1320 rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 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+0x3b3/0x8f0 net/socket.c:2115 __sys_sendmmsg+0x195/0x470 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236 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:00007f7107be8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000027ac0 RCX: 000000000045e179 RDX: 04924924924926d3 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000118d030 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cff4 R13: 00007ffc59583f7f R14: 00007f7107be99c0 R15: 000000000118cff4 ================================================================================ netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed audit: type=1804 audit(1600900774.752:336): pid=15145 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir261123207/syzkaller.ceHih2/1359/bus" dev="sda1" ino=16794 res=1 UDF-fs: warning (device loop4): udf_load_vrs: No VRS found audit: type=1804 audit(1600900774.752:337): pid=15145 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir261123207/syzkaller.ceHih2/1359/bus" dev="sda1" ino=16794 res=1 UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found audit: type=1804 audit(1600900774.772:338): pid=15145 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir261123207/syzkaller.ceHih2/1359/bus" dev="sda1" ino=16794 res=1 UDF-fs: Scanning with blocksize 4096 failed audit: type=1804 audit(1600900774.772:339): pid=15145 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir261123207/syzkaller.ceHih2/1359/bus" dev="sda1" ino=16794 res=1 EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed audit: type=1400 audit(1600900775.522:340): avc: denied { write } for pid=15199 comm="syz-executor.2" name="fd" dev="proc" ino=128658 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found audit: type=1400 audit(1600900775.522:341): avc: denied { add_name } for pid=15199 comm="syz-executor.2" name="3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dir permissive=1 UDF-fs: Scanning with blocksize 4096 failed audit: type=1400 audit(1600900775.522:342): avc: denied { create } for pid=15199 comm="syz-executor.2" name="3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:kernel_t:s0 tclass=file permissive=1 UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue f2fs_msg: 110 callbacks suppressed F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Failed to get valid F2FS checkpoint F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop1): invalid crc value EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Failed to get valid F2FS checkpoint UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue mkiss: ax0: crc mode is auto. UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed f2fs_msg: 114 callbacks suppressed F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0)