loop1: rw=12288, want=8200, limit=12 attempt to access beyond end of device loop1: rw=12288, want=12296, limit=12 attempt to access beyond end of device ================================================================================ UBSAN: Undefined behaviour in net/sched/sch_api.c:375:22 shift exponent 255 is too large for 32-bit type 'int' CPU: 1 PID: 19427 Comm: syz-executor.4 Not tainted 4.19.150-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 __detect_linklayer net/sched/sch_api.c:375 [inline] qdisc_get_rtab.cold+0x1d/0x8e net/sched/sch_api.c:421 tbf_change+0x99d/0x1230 net/sched/sch_tbf.c:325 tbf_init+0x91/0xc4 net/sched/sch_tbf.c:433 qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155 tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571 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+0x7bb/0x8f0 net/socket.c:2115 loop1: rw=12288, want=8200, limit=12 attempt to access beyond end of device loop1: rw=12288, want=12296, limit=12 __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:00007f8e02157c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045de59 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000004 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc8159b25f R14: 00007f8e021589c0 R15: 000000000118bf2c ================================================================================ ================================================================================ UBSAN: Undefined behaviour in net/sched/sch_api.c:376:24 shift exponent 255 is too large for 32-bit type 'int' CPU: 1 PID: 19427 Comm: syz-executor.4 Not tainted 4.19.150-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 __detect_linklayer net/sched/sch_api.c:376 [inline] qdisc_get_rtab.cold+0x7f/0x8e net/sched/sch_api.c:421 tbf_change+0x99d/0x1230 net/sched/sch_tbf.c:325 tbf_init+0x91/0xc4 net/sched/sch_tbf.c:433 qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155 tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571 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+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:00007f8e02157c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002e600 RCX: 000000000045de59 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 0000000000000004 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc8159b25f R14: 00007f8e021589c0 R15: 000000000118bf2c ================================================================================ sch_tbf: burst 0 is lower than device lo mtu (65550) ! sch_tbf: burst 0 is lower than device lo mtu (65550) ! sch_tbf: burst 0 is lower than device lo mtu (65550) ! attempt to access beyond end of device loop1: rw=12288, want=8200, limit=12 attempt to access beyond end of device loop1: rw=12288, want=12296, limit=12 attempt to access beyond end of device loop1: rw=12288, want=8200, limit=12 attempt to access beyond end of device loop1: rw=12288, want=12296, limit=12 sch_tbf: burst 0 is lower than device lo mtu (65550) ! sch_tbf: burst 0 is lower than device lo mtu (65550) ! XFS (loop2): Invalid superblock magic number XFS (loop2): Invalid superblock magic number XFS (loop5): Invalid superblock magic number XFS (loop3): Invalid superblock magic number XFS (loop0): Invalid superblock magic number UDF-fs: error (device loop2): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop2): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop2): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop2): udf_read_tagged: read failed, block=512, location=512 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop2): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop2): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop2): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop5): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop2): udf_load_vrs: No anchor found UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop5): udf_load_vrs: No anchor found UDF-fs: warning (device loop2): udf_load_vrs: No VRS found UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop1): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop5): udf_fill_super: No partition found (1) UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 REISERFS warning (device loop2): sh-2011 read_super_block: can't find a reiserfs filesystem on (dev loop2, block 16, size 4096) UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found REISERFS warning (device loop2): sh-2021 reiserfs_fill_super: can not find reiserfs on loop2 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop5): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_fill_super: No partition found (1) UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop0): udf_read_tagged: read failed, block=512, location=512 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop0): udf_load_vrs: No anchor found UDF-fs: error (device loop5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop5): udf_read_tagged: read failed, block=512, location=512 REISERFS warning (device loop2): sh-2011 read_super_block: can't find a reiserfs filesystem on (dev loop2, block 16, size 4096) UDF-fs: warning (device loop5): udf_load_vrs: No anchor found UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 REISERFS warning (device loop2): sh-2021 reiserfs_fill_super: can not find reiserfs on loop2 UDF-fs: Scanning with blocksize 4096 failed UDF-fs: warning (device loop0): udf_fill_super: No partition found (1) UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop5): udf_fill_super: No partition found (1) UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed REISERFS warning (device loop1): sh-2011 read_super_block: can't find a reiserfs filesystem on (dev loop1, block 16, size 4096) REISERFS warning (device loop1): sh-2021 reiserfs_fill_super: can not find reiserfs on loop1 (syz-executor.5,19697,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.2,19696,0):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.2,19696,0):ocfs2_fill_super:1225 ERROR: status = -22 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 (syz-executor.5,19697,0):ocfs2_fill_super:1225 ERROR: status = -22 (syz-executor.0,19704,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found (syz-executor.0,19704,1):ocfs2_fill_super:1225 ERROR: status = -22 UDF-fs: Scanning with blocksize 512 failed UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 (syz-executor.0,19704,0):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 (syz-executor.5,19697,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.0,19704,0):ocfs2_fill_super:1225 ERROR: status = -22 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found (syz-executor.5,19697,1):ocfs2_fill_super:1225 ERROR: status = -22 UDF-fs: Scanning with blocksize 4096 failed (syz-executor.1,19726,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.1,19726,1):ocfs2_fill_super:1225 ERROR: status = -22 (syz-executor.0,19740,0):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.5,19744,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options (syz-executor.0,19740,0):ocfs2_fill_super:1225 ERROR: status = -22 (syz-executor.5,19744,0):ocfs2_fill_super:1225 ERROR: status = -22 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=256, location=256 (syz-executor.0,19740,1):ocfs2_parse_options:1513 ERROR: Invalid heartbeat mount options