audit: type=1804 audit(1601934469.296:359): pid=8219 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/251/bus/bus" dev="sda1" ino=15986 res=1 ================================================================================ UBSAN: Undefined behaviour in arch/x86/kernel/uprobes.c:276:56 index 4 is out of range for type 'insn_byte_t [4]' CPU: 1 PID: 8220 Comm: syz-executor.4 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: 0033:0x45de29 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:00007ff039675c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000021400 RCX: 000000000045de29 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000 RBP: 000000000118bf78 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000412 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007fffdabd662f R14: 00007ff0396769c0 R15: 000000000118bf2c ================================================================================ IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 ptrace attach of "/root/syz-executor.0"[8375] was attempted by "/root/syz-executor.0"[8376] audit: type=1800 audit(1601934472.806:360): pid=8374 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=16418 res=0 audit: type=1804 audit(1601934472.866:361): pid=8373 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/259/bus" dev="sda1" ino=16452 res=1 audit: type=1804 audit(1601934473.076:362): pid=8388 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/260/bus" dev="sda1" ino=16076 res=1 ptrace attach of "/root/syz-executor.5"[8395] was attempted by "/root/syz-executor.5"[8397] ptrace attach of "/root/syz-executor.4"[8398] was attempted by "/root/syz-executor.4"[8399] audit: type=1804 audit(1601934473.316:363): pid=8404 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/261/bus" dev="sda1" ino=16403 res=1 audit: type=1800 audit(1601934473.656:364): pid=8421 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16581 res=0 audit: type=1800 audit(1601934473.696:365): pid=8421 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16581 res=0 audit: type=1800 audit(1601934473.696:366): pid=8421 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16581 res=0 audit: type=1800 audit(1601934473.706:367): pid=8426 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="file0" dev="sda1" ino=16581 res=0 audit: type=1804 audit(1601934473.986:368): pid=8443 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/265/bus" dev="sda1" ino=16026 res=1 audit: type=1804 audit(1601934474.466:369): pid=8468 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/266/bus" dev="sda1" ino=16613 res=1 ptrace attach of "/root/syz-executor.0"[8505] was attempted by "/root/syz-executor.0"[8514] ptrace attach of "/root/syz-executor.0"[8528] was attempted by "/root/syz-executor.0"[8530] ptrace attach of "/root/syz-executor.4"[8531] was attempted by "/root/syz-executor.4"[8534] ptrace attach of "/root/syz-executor.0"[8547] was attempted by "/root/syz-executor.0"[8553] overlayfs: unrecognized mount option "dont_measure" or missing value overlayfs: unrecognized mount option "dont_measure" or missing value ptrace attach of "/root/syz-executor.5"[8592] was attempted by "/root/syz-executor.5"[8595] ptrace attach of "/root/syz-executor.5"[8592] was attempted by "/root/syz-executor.5"[8598] overlayfs: unrecognized mount option "dont_measure" or missing value overlayfs: unrecognized mount option "dont_measure" or missing value kauditd_printk_skb: 12 callbacks suppressed audit: type=1804 audit(1601934478.086:382): pid=8614 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/276/bus" dev="sda1" ino=16499 res=1 audit: type=1804 audit(1601934478.316:383): pid=8619 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/277/bus" dev="sda1" ino=15915 res=1 audit: type=1804 audit(1601934478.546:384): pid=8627 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/278/bus" dev="sda1" ino=15915 res=1 overlayfs: failed to resolve './file0': -2 audit: type=1804 audit(1601934478.676:385): pid=8636 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir040159721/syzkaller.FbCpH6/279/bus" dev="sda1" ino=15870 res=1 overlayfs: unrecognized mount option "dont_measure" or missing value audit: type=1804 audit(1601934478.876:386): pid=8649 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="bus" dev="sda1" ino=15910 res=1 audit: type=1804 audit(1601934478.946:387): pid=8651 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="bus" dev="sda1" ino=15910 res=1 audit: type=1804 audit(1601934478.996:388): pid=8643 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="bus" dev="sda1" ino=15910 res=1 audit: type=1804 audit(1601934478.996:389): pid=8643 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="bus" dev="sda1" ino=15910 res=1 audit: type=1800 audit(1601934479.146:390): pid=8662 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.4" name="file0" dev="sda1" ino=16216 res=0 audit: type=1804 audit(1601934479.186:391): pid=8662 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="file0" dev="sda1" ino=16216 res=1