netlink: 67 bytes leftover after parsing attributes in process `syz-executor.4'.
================================================================================
UBSAN: Undefined behaviour in arch/x86/kernel/uprobes.c:276:56
index 4 is out of range for type 'insn_byte_t [4]'
CPU: 0 PID: 10244 Comm: syz-executor.2 Not tainted 4.19.149-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_out_of_bounds.cold+0x63/0x6f lib/ubsan.c:383
 is_prefix_bad arch/x86/kernel/uprobes.c:276 [inline]
 uprobe_init_insn arch/x86/kernel/uprobes.c:299 [inline]
 arch_uprobe_analyze_insn+0x9d8/0xaa0 arch/x86/kernel/uprobes.c:868
 prepare_uprobe kernel/events/uprobes.c:611 [inline]
 install_breakpoint kernel/events/uprobes.c:654 [inline]
 uprobe_mmap+0x8c2/0xa70 kernel/events/uprobes.c:1096
 mmap_region+0x552/0x1510 mm/mmap.c:1803
 do_mmap+0x8e8/0x1080 mm/mmap.c:1530
 do_mmap_pgoff include/linux/mm.h:2326 [inline]
 vm_mmap_pgoff+0x197/0x200 mm/util.c:357
 ksys_mmap_pgoff+0x2d1/0x660 mm/mmap.c:1580
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45dd99
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:00007f20b051ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000021400 RCX: 000000000045dd99
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000
RBP: 000000000118bf78 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000412 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffd091174bf R14: 00007f20b051b9c0 R15: 000000000118bf2c
================================================================================
audit: type=1804 audit(1601635251.570:123): pid=10259 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/77/file0" dev="sda1" ino=16013 res=1
audit: type=1800 audit(1601635252.200:124): pid=10284 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.3" name="file0" dev="sda1" ino=15832 res=0
overlayfs: filesystem on './file1' not supported as upperdir
audit: type=1804 audit(1601635252.470:125): pid=10298 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/78/file0" dev="sda1" ino=16013 res=1
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
kauditd_printk_skb: 4 callbacks suppressed
audit: type=1804 audit(1601635254.370:130): pid=10396 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir617435925/syzkaller.cpMetm/101/bus" dev="sda1" ino=16021 res=1
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
audit: type=1804 audit(1601635254.700:131): pid=10405 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/81/file1/file0" dev="sda1" ino=16037 res=1
audit: type=1804 audit(1601635255.240:132): pid=10440 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/82/file1/file0" dev="sda1" ino=15994 res=1
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
ptrace attach of "/root/syz-executor.4"[10463] was attempted by "/root/syz-executor.4"[10465]
audit: type=1804 audit(1601635256.180:133): pid=10484 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/83/file1/file0" dev="sda1" ino=16015 res=1
audit: type=1804 audit(1601635259.010:134): pid=10534 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/84/file1/file0" dev="sda1" ino=16061 res=1
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
audit: type=1804 audit(1601635260.120:135): pid=10593 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/85/file1/file0" dev="sda1" ino=16063 res=1
IPVS: ftp: loaded support on port[0] = 21
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
audit: type=1804 audit(1601635260.430:136): pid=10614 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/86/file1/file0" dev="sda1" ino=16063 res=1
audit: type=1800 audit(1601635260.650:137): pid=10648 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=16064 res=0
IPVS: ftp: loaded support on port[0] = 21
audit: type=1800 audit(1601635260.710:138): pid=10652 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=16064 res=0
audit: type=1800 audit(1601635261.050:139): pid=10686 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=16005 res=0
ptrace attach of "/root/syz-executor.2"[10690] was attempted by "/root/syz-executor.2"[10692]
FAT-fs (loop5): bogus number of reserved sectors
FAT-fs (loop5): Can't find a valid FAT filesystem
audit: type=1804 audit(1601635261.280:140): pid=10701 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir518083599/syzkaller.YsdgGy/87/file1/file0" dev="sda1" ino=16063 res=1