Extracting prog: 10m47.678221401s Minimizing prog: 8m20.118483746s Simplifying prog options: 0s Extracting C: 21.145640188s Simplifying C: 12m28.886699893s extracting reproducer from 24 programs testing a last program of every proc single: executing 4 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_clone-ptrace-ptrace$setregs-ptrace$cont-ptrace$cont detailed listing: executing program 0: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) ptrace$setregs(0xd, r0, 0x20000000002, &(0x7f0000000040)) ptrace$cont(0x9, r0, 0x7ff, 0x3) ptrace$cont(0x7, r0, 0x80000001, 0x4) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): gettid-timer_create-timer_settime-memfd_create-ioctl$FS_IOC_RESVSP detailed listing: executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f00000000c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = memfd_create(&(0x7f0000000ec0)='\x103q}2[\xe0\x9a\xee\xaf\x03\x97\x9et\v\"|Ma\x86\xe7\xc0\x14\x9f\xb9h\xb1\x96\xe7=I\x860S6\xb5\xa8\xc2\x95Je%\xfeG\'e\xe5\x8f\xf8\xd2\x1c\xc0\xfb\x1c\xa6\xab\bi\xe4^\xd5\xfd\xa9\r\xac7A\x94k\xcd\t\x00\x90k\xd6\x05\xb6\x03\x00\x00\x00A\xc5\x9c_\xd4\x18,\f\xd4s\xb2\x99/\xc0\x9a\xf2Oc\xc0c\x03gB!\xb0\xb8n\x01\x9bT\x95\x10\x86\xe8$\x7f\r[\xf9\x0e1v\xb1\n\x88\v\x95uy\xb5:`\x8b\nC\x18A;\xaa%\xaf\xc7\xa3\xac\xa2D\xb5\xe2\xe1\xdc(\xfd\x05\x9fB\x84O\xfe@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1a\xa0\x17\xe3\xac\xe9\xc9\xa7\x8a\x1b\x03\"&\xac\xcap>\xccZ\x01\xbc\x18\xc1\xb9\xe9\v\x8b\x9c\xb4Q\xd4\x96EV<>\x99\xca\xb3\xe0\xc4tL\xed\xf5W\xbd#\xcf\x8a\x84\xed\x9f/\xd4\xbb\xea;-Dp\xf8\xd0F\x90\xf8\x92Ip6\xf4\x16\xe8\x14\xe0\x92!\x92-F\xe2\x14D\x91\xa8b\x04\xdd\x1d\a\xdc\xe0\x18\x85{\x80Q\xf6k\x96\xfaQ\x9fW\vO\xf0\xe4O\\\xceS\xf0\xde\x049d\x06#\x88\xc3\xdf\x85O\x1c\xc3\xad?r\xd7\x0e\x00\xd7\x83\xb0\x88\x9c\xf6Y-F\x98\xdd\x9c~\xfd\x95\xc3\xb6lC\xaa\"Y\xa2K\xecz\x84:*\xf5Y\xd1\x9b1\x91\x9b\x15\xd4\xec\x02o\x01&\xaa\x90w\xc4\xc7yn\xb5\x1ag\xab&?\xbe\xcb\xe8v\xa8\xe0\xa4\x81sW\xacf\x149\xd2}\xefCGa\x9a$4\x8c\xa5!p\x83\x05\x96%\x02%\xabj\n\x05\x00\x00\x00\x91}&y\xd3\xe1\xeep\'\xc5\xab\x19GsX5\x8c\n\x9fh\xee;4\xb1%V\xe0\xa9\x8e\xf30:\xd8\x18N~G\x139\xcas\xf4D\xd4\xd0s\r3\xcb\x9a&\xdf+(\xc9S\x9eL5\x84\xb1\x90pN\xe7/\r\b\x9a\xf13Q\xf9\xdf\x7fX\xa0\xafK\xefh\xbfOv\x9bh\xb3\xc0\xf5\x80\xba\"@\'\x02\xafi\xeaE\xa6a6F\xde\xd4\xfa\x84\xe4+A\xb7\xa2\x8f\xc9\xee|xxn\xefw\x93]%\xd0\x19\x132\x86\xabn\xfe\x91\xb6Cl\xcf\x04\x1cq\xc1\x1d~\x8d\x01\x83\x93_\x83\x8a`v\xb0K,|S\xe4\xba\xb1\f\xc8`\xa6s\xad\x11\xd4wG\x80u\x87u\xff\x87\xee', 0x2) ioctl$FS_IOC_RESVSP(r1, 0x40305828, &(0x7f0000000040)={0x0, 0x1, 0x8, 0x1000007}) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mount-setxattr$security_selinux detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0) setxattr$security_selinux(&(0x7f0000000180)='./mnt\x00', &(0x7f0000000040), &(0x7f0000000000)='system_u:object_r:auditd_unit_file_t:s0\x00', 0x28, 0x3) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$tun-ioctl$TUNSETIFF-socket$inet_udp-ioctl$sock_inet_SIOCSIFFLAGS-write$tun detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) program did not crash single: failed to extract reproducer bisect: bisecting 24 programs with base timeout 30s testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 3: r0 = socket$packet(0x11, 0x3, 0x300) r1 = socket$packet(0x11, 0x2, 0x300) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'ip_vti0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000100)='O', 0x5c8, 0x0, &(0x7f0000000080)={0x11, 0x0, r2, 0x1, 0x0, 0x6, @broadcast}, 0x14) ioctl$sock_TIOCINQ(r0, 0x541b, &(0x7f0000000040)) executing program 3: setsockopt$TIPC_GROUP_JOIN(0xffffffffffffffff, 0x10f, 0x87, 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./debug\x00', &(0x7f0000000080)='debugfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./debug/bluetooth/rfcomm\x00', 0x0, 0x0) read(r0, &(0x7f0000000200)=""/100, 0x64) executing program 3: r0 = socket$unix(0x1, 0x2, 0x0) bind$unix(r0, &(0x7f0000000100)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) r1 = socket$unix(0x1, 0x2, 0x0) connect$unix(r1, &(0x7f0000000180)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) connect$unix(r1, &(0x7f0000000200)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) executing program 3: r0 = socket$inet_icmp(0x2, 0x2, 0x1) sendmmsg$inet(r0, &(0x7f0000000340)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000440)="08000000001f", 0x6}, {0x0}], 0x2}}], 0x2, 0x4000) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracing\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='./tracing\x00', &(0x7f0000000200)='tracefs\x00', 0x0, 0x0) mknodat$loop(0xffffffffffffff9c, &(0x7f0000000380)='./tracing/events/ftrace/filter\x00', 0x20, 0x1) executing program 3: r0 = userfaultfd(0x1) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000100)={0xaa, 0x268}) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000040)={{&(0x7f00000e2000/0xc00000)=nil, 0xc00000}, 0x1}) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f076bbee9, 0x8031, r0, 0x28f43000) ioctl$UFFDIO_ZEROPAGE(r0, 0xc020aa04, 0x0) executing program 1: madvise(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xe) connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@file={0x0, './file0\x00'}, 0x6e) syz_clone(0x880280, 0x0, 0x0, 0x0, 0x0, 0x0) r0 = getpid() process_vm_readv(r0, &(0x7f0000008400)=[{&(0x7f0000000300)=""/54, 0x7ffff000}, {&(0x7f0000006180)=""/152, 0x98}], 0x2, &(0x7f0000008640)=[{&(0x7f0000008480)=""/95, 0x7ffff000}], 0x286, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x1c0) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) pipe2$9p(&(0x7f00000001c0)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000000), 0x404, &(0x7f0000000200)={'trans=fd,', {'rfdno', 0x3d, r1}, 0x2c, {'wfdno', 0x3d, r0}}) write$P9_RVERSION(r2, &(0x7f0000001080)=ANY=[@ANYBLOB="070000006bffff"], 0x15) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000100)='cpuacct.usage_percpu\x00', 0x275a, 0x0) munmap(&(0x7f0000002000/0x1000)=nil, 0x1000) r0 = open(&(0x7f00000000c0)='.\x00', 0x8000, 0x70) getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8) getdents(r0, &(0x7f0000001fc0)=""/184, 0xb8) executing program 2: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f00000000c0)=ANY=[@ANYBLOB="03031b003a00320006006300000000443aff00000000000000000000ffffac141419ff020000000000000000000000000001"], 0x76) executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', 0x0, 0x0, 0x8410, 0x0) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) openat$binderfs(0xffffffffffffff9c, &(0x7f00000000c0)='./binderfs/binder1\x00', 0x1002, 0x0) executing program 0: r0 = fsopen(&(0x7f00000004c0)='ramfs\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0) r1 = fsmount(r0, 0x0, 0xc) symlinkat(&(0x7f0000000000)='.\x00', r1, &(0x7f0000000140)='./file0\x00') readlinkat(r1, &(0x7f0000000080)='./file0/../file0/file0\x00', &(0x7f0000000c00)=""/171, 0xab) executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$BTRFS_IOC_QUOTA_CTL(r2, 0xc0109428, &(0x7f0000000000)={0x3, 0x401}) ioctl$KVM_SET_CPUID(r2, 0x4008ae8a, &(0x7f00000000c0)={0xaaaaaaaaaaaa839}) executing program 1: r0 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f00000000c0)={0x4000, 0x2}, 0x10) r1 = userfaultfd(0x80001) ioctl$UFFDIO_API(r1, 0xc018aa3f, &(0x7f00000002c0)={0xaa, 0x100}) sendmsg$netlink(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000002c0)=ANY=[@ANYBLOB="1c0000001a0001002abd70000000000002"], 0x78}], 0x1, 0x0, 0x0, 0x20400}, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./dev/mapper/control\x00', 0x2, 0x0) write(r0, &(0x7f0000000138)='\t\x00', 0x2) ioctl(r0, 0xc138fd05, &(0x7f0000000000)="0400000000000000000000006e0100003801") executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x1001}) r1 = socket$inet6(0xa, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000100)={'syzkaller0\x00', 0x1}) write$tun(r0, &(0x7f00000002c0)=ANY=[@ANYBLOB="6000000000003b40fe8000000000000000000000000000091c"], 0x28) executing program 1: add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffe) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./dev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r0, 0xc013fd04, &(0x7f00000001c0)="04000000000000005800000038010000380100000000c42db02f5427bc529a9612fdd573a433225c5b") executing program 1: mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x8) r0 = socket$inet6(0xa, 0x3, 0xff) r1 = dup(r0) r2 = dup(r1) ioctl$SIOCGETNODEID(r2, 0x89e1, 0x0) executing program 2: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000000), 0x40, 0x0) mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x1a88460, 0x0) openat(0xffffffffffffff9c, 0x0, 0x660200, 0xdd) write(0xffffffffffffffff, 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40247007, &(0x7f0000000040)={0x22, 0x16, 0x402, 0xa, 0x2000000, 0x101, 0x5, 0x13d, 0x1}) executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0) setxattr$security_selinux(&(0x7f0000000180)='./mnt\x00', &(0x7f0000000040), &(0x7f0000000000)='system_u:object_r:auditd_unit_file_t:s0\x00', 0x28, 0x3) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x0) mount$bind(&(0x7f0000000000)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0) mount$tmpfs(0x0, &(0x7f00000001c0)='./file0\x00', 0x0, 0x20000, 0x0) mount$bind(&(0x7f0000000240)='.\x00', &(0x7f0000000280)='./file0/file0\x00', 0x0, 0x11050ca, 0x0) open_tree(0xffffffffffffff9c, &(0x7f0000000640)='\x00', 0x89101) executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f00000000c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = memfd_create(&(0x7f0000000ec0)='\x103q}2[\xe0\x9a\xee\xaf\x03\x97\x9et\v\"|Ma\x86\xe7\xc0\x14\x9f\xb9h\xb1\x96\xe7=I\x860S6\xb5\xa8\xc2\x95Je%\xfeG\'e\xe5\x8f\xf8\xd2\x1c\xc0\xfb\x1c\xa6\xab\bi\xe4^\xd5\xfd\xa9\r\xac7A\x94k\xcd\t\x00\x90k\xd6\x05\xb6\x03\x00\x00\x00A\xc5\x9c_\xd4\x18,\f\xd4s\xb2\x99/\xc0\x9a\xf2Oc\xc0c\x03gB!\xb0\xb8n\x01\x9bT\x95\x10\x86\xe8$\x7f\r[\xf9\x0e1v\xb1\n\x88\v\x95uy\xb5:`\x8b\nC\x18A;\xaa%\xaf\xc7\xa3\xac\xa2D\xb5\xe2\xe1\xdc(\xfd\x05\x9fB\x84O\xfe@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1a\xa0\x17\xe3\xac\xe9\xc9\xa7\x8a\x1b\x03\"&\xac\xcap>\xccZ\x01\xbc\x18\xc1\xb9\xe9\v\x8b\x9c\xb4Q\xd4\x96EV<>\x99\xca\xb3\xe0\xc4tL\xed\xf5W\xbd#\xcf\x8a\x84\xed\x9f/\xd4\xbb\xea;-Dp\xf8\xd0F\x90\xf8\x92Ip6\xf4\x16\xe8\x14\xe0\x92!\x92-F\xe2\x14D\x91\xa8b\x04\xdd\x1d\a\xdc\xe0\x18\x85{\x80Q\xf6k\x96\xfaQ\x9fW\vO\xf0\xe4O\\\xceS\xf0\xde\x049d\x06#\x88\xc3\xdf\x85O\x1c\xc3\xad?r\xd7\x0e\x00\xd7\x83\xb0\x88\x9c\xf6Y-F\x98\xdd\x9c~\xfd\x95\xc3\xb6lC\xaa\"Y\xa2K\xecz\x84:*\xf5Y\xd1\x9b1\x91\x9b\x15\xd4\xec\x02o\x01&\xaa\x90w\xc4\xc7yn\xb5\x1ag\xab&?\xbe\xcb\xe8v\xa8\xe0\xa4\x81sW\xacf\x149\xd2}\xefCGa\x9a$4\x8c\xa5!p\x83\x05\x96%\x02%\xabj\n\x05\x00\x00\x00\x91}&y\xd3\xe1\xeep\'\xc5\xab\x19GsX5\x8c\n\x9fh\xee;4\xb1%V\xe0\xa9\x8e\xf30:\xd8\x18N~G\x139\xcas\xf4D\xd4\xd0s\r3\xcb\x9a&\xdf+(\xc9S\x9eL5\x84\xb1\x90pN\xe7/\r\b\x9a\xf13Q\xf9\xdf\x7fX\xa0\xafK\xefh\xbfOv\x9bh\xb3\xc0\xf5\x80\xba\"@\'\x02\xafi\xeaE\xa6a6F\xde\xd4\xfa\x84\xe4+A\xb7\xa2\x8f\xc9\xee|xxn\xefw\x93]%\xd0\x19\x132\x86\xabn\xfe\x91\xb6Cl\xcf\x04\x1cq\xc1\x1d~\x8d\x01\x83\x93_\x83\x8a`v\xb0K,|S\xe4\xba\xb1\f\xc8`\xa6s\xad\x11\xd4wG\x80u\x87u\xff\x87\xee', 0x2) ioctl$FS_IOC_RESVSP(r1, 0x40305828, &(0x7f0000000040)={0x0, 0x1, 0x8, 0x1000007}) executing program 3: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) ptrace$setregs(0xd, r0, 0x20000000002, &(0x7f0000000040)) ptrace$cont(0x9, r0, 0x7ff, 0x3) ptrace$cont(0x7, r0, 0x80000001, 0x4) program crashed: WARNING in shmem_rmdir bisect: bisecting 24 programs bisect: split chunks (needed=false): <24> bisect: split chunk #0 of len 24 into 3 parts bisect: testing without sub-chunk 1/3 testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 2: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f00000000c0)=ANY=[@ANYBLOB="03031b003a00320006006300000000443aff00000000000000000000ffffac141419ff020000000000000000000000000001"], 0x76) executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', 0x0, 0x0, 0x8410, 0x0) mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1) openat$binderfs(0xffffffffffffff9c, &(0x7f00000000c0)='./binderfs/binder1\x00', 0x1002, 0x0) executing program 0: r0 = fsopen(&(0x7f00000004c0)='ramfs\x00', 0x0) fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0) r1 = fsmount(r0, 0x0, 0xc) symlinkat(&(0x7f0000000000)='.\x00', r1, &(0x7f0000000140)='./file0\x00') readlinkat(r1, &(0x7f0000000080)='./file0/../file0/file0\x00', &(0x7f0000000c00)=""/171, 0xab) executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$BTRFS_IOC_QUOTA_CTL(r2, 0xc0109428, &(0x7f0000000000)={0x3, 0x401}) ioctl$KVM_SET_CPUID(r2, 0x4008ae8a, &(0x7f00000000c0)={0xaaaaaaaaaaaa839}) executing program 1: r0 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f00000000c0)={0x4000, 0x2}, 0x10) r1 = userfaultfd(0x80001) ioctl$UFFDIO_API(r1, 0xc018aa3f, &(0x7f00000002c0)={0xaa, 0x100}) sendmsg$netlink(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f00000002c0)=ANY=[@ANYBLOB="1c0000001a0001002abd70000000000002"], 0x78}], 0x1, 0x0, 0x0, 0x20400}, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./dev/mapper/control\x00', 0x2, 0x0) write(r0, &(0x7f0000000138)='\t\x00', 0x2) ioctl(r0, 0xc138fd05, &(0x7f0000000000)="0400000000000000000000006e0100003801") executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x1001}) r1 = socket$inet6(0xa, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000100)={'syzkaller0\x00', 0x1}) write$tun(r0, &(0x7f00000002c0)=ANY=[@ANYBLOB="6000000000003b40fe8000000000000000000000000000091c"], 0x28) executing program 1: add_key$keyring(0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffe) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./dev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r0, 0xc013fd04, &(0x7f00000001c0)="04000000000000005800000038010000380100000000c42db02f5427bc529a9612fdd573a433225c5b") executing program 1: mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x8) r0 = socket$inet6(0xa, 0x3, 0xff) r1 = dup(r0) r2 = dup(r1) ioctl$SIOCGETNODEID(r2, 0x89e1, 0x0) executing program 2: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000000), 0x40, 0x0) mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x1a88460, 0x0) openat(0xffffffffffffff9c, 0x0, 0x660200, 0xdd) write(0xffffffffffffffff, 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40247007, &(0x7f0000000040)={0x22, 0x16, 0x402, 0xa, 0x2000000, 0x101, 0x5, 0x13d, 0x1}) executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0) setxattr$security_selinux(&(0x7f0000000180)='./mnt\x00', &(0x7f0000000040), &(0x7f0000000000)='system_u:object_r:auditd_unit_file_t:s0\x00', 0x28, 0x3) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x0) mount$bind(&(0x7f0000000000)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0) mount$tmpfs(0x0, &(0x7f00000001c0)='./file0\x00', 0x0, 0x20000, 0x0) mount$bind(&(0x7f0000000240)='.\x00', &(0x7f0000000280)='./file0/file0\x00', 0x0, 0x11050ca, 0x0) open_tree(0xffffffffffffff9c, &(0x7f0000000640)='\x00', 0x89101) executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f00000000c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = memfd_create(&(0x7f0000000ec0)='\x103q}2[\xe0\x9a\xee\xaf\x03\x97\x9et\v\"|Ma\x86\xe7\xc0\x14\x9f\xb9h\xb1\x96\xe7=I\x860S6\xb5\xa8\xc2\x95Je%\xfeG\'e\xe5\x8f\xf8\xd2\x1c\xc0\xfb\x1c\xa6\xab\bi\xe4^\xd5\xfd\xa9\r\xac7A\x94k\xcd\t\x00\x90k\xd6\x05\xb6\x03\x00\x00\x00A\xc5\x9c_\xd4\x18,\f\xd4s\xb2\x99/\xc0\x9a\xf2Oc\xc0c\x03gB!\xb0\xb8n\x01\x9bT\x95\x10\x86\xe8$\x7f\r[\xf9\x0e1v\xb1\n\x88\v\x95uy\xb5:`\x8b\nC\x18A;\xaa%\xaf\xc7\xa3\xac\xa2D\xb5\xe2\xe1\xdc(\xfd\x05\x9fB\x84O\xfe@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1a\xa0\x17\xe3\xac\xe9\xc9\xa7\x8a\x1b\x03\"&\xac\xcap>\xccZ\x01\xbc\x18\xc1\xb9\xe9\v\x8b\x9c\xb4Q\xd4\x96EV<>\x99\xca\xb3\xe0\xc4tL\xed\xf5W\xbd#\xcf\x8a\x84\xed\x9f/\xd4\xbb\xea;-Dp\xf8\xd0F\x90\xf8\x92Ip6\xf4\x16\xe8\x14\xe0\x92!\x92-F\xe2\x14D\x91\xa8b\x04\xdd\x1d\a\xdc\xe0\x18\x85{\x80Q\xf6k\x96\xfaQ\x9fW\vO\xf0\xe4O\\\xceS\xf0\xde\x049d\x06#\x88\xc3\xdf\x85O\x1c\xc3\xad?r\xd7\x0e\x00\xd7\x83\xb0\x88\x9c\xf6Y-F\x98\xdd\x9c~\xfd\x95\xc3\xb6lC\xaa\"Y\xa2K\xecz\x84:*\xf5Y\xd1\x9b1\x91\x9b\x15\xd4\xec\x02o\x01&\xaa\x90w\xc4\xc7yn\xb5\x1ag\xab&?\xbe\xcb\xe8v\xa8\xe0\xa4\x81sW\xacf\x149\xd2}\xefCGa\x9a$4\x8c\xa5!p\x83\x05\x96%\x02%\xabj\n\x05\x00\x00\x00\x91}&y\xd3\xe1\xeep\'\xc5\xab\x19GsX5\x8c\n\x9fh\xee;4\xb1%V\xe0\xa9\x8e\xf30:\xd8\x18N~G\x139\xcas\xf4D\xd4\xd0s\r3\xcb\x9a&\xdf+(\xc9S\x9eL5\x84\xb1\x90pN\xe7/\r\b\x9a\xf13Q\xf9\xdf\x7fX\xa0\xafK\xefh\xbfOv\x9bh\xb3\xc0\xf5\x80\xba\"@\'\x02\xafi\xeaE\xa6a6F\xde\xd4\xfa\x84\xe4+A\xb7\xa2\x8f\xc9\xee|xxn\xefw\x93]%\xd0\x19\x132\x86\xabn\xfe\x91\xb6Cl\xcf\x04\x1cq\xc1\x1d~\x8d\x01\x83\x93_\x83\x8a`v\xb0K,|S\xe4\xba\xb1\f\xc8`\xa6s\xad\x11\xd4wG\x80u\x87u\xff\x87\xee', 0x2) ioctl$FS_IOC_RESVSP(r1, 0x40305828, &(0x7f0000000040)={0x0, 0x1, 0x8, 0x1000007}) executing program 3: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) ptrace$setregs(0xd, r0, 0x20000000002, &(0x7f0000000040)) ptrace$cont(0x9, r0, 0x7ff, 0x3) ptrace$cont(0x7, r0, 0x80000001, 0x4) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 2/3 testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 1: mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x8) r0 = socket$inet6(0xa, 0x3, 0xff) r1 = dup(r0) r2 = dup(r1) ioctl$SIOCGETNODEID(r2, 0x89e1, 0x0) executing program 2: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000000), 0x40, 0x0) mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x1a88460, 0x0) openat(0xffffffffffffff9c, 0x0, 0x660200, 0xdd) write(0xffffffffffffffff, 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40247007, &(0x7f0000000040)={0x22, 0x16, 0x402, 0xa, 0x2000000, 0x101, 0x5, 0x13d, 0x1}) executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0) setxattr$security_selinux(&(0x7f0000000180)='./mnt\x00', &(0x7f0000000040), &(0x7f0000000000)='system_u:object_r:auditd_unit_file_t:s0\x00', 0x28, 0x3) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x0) mount$bind(&(0x7f0000000000)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0) mount$tmpfs(0x0, &(0x7f00000001c0)='./file0\x00', 0x0, 0x20000, 0x0) mount$bind(&(0x7f0000000240)='.\x00', &(0x7f0000000280)='./file0/file0\x00', 0x0, 0x11050ca, 0x0) open_tree(0xffffffffffffff9c, &(0x7f0000000640)='\x00', 0x89101) executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f00000000c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = memfd_create(&(0x7f0000000ec0)='\x103q}2[\xe0\x9a\xee\xaf\x03\x97\x9et\v\"|Ma\x86\xe7\xc0\x14\x9f\xb9h\xb1\x96\xe7=I\x860S6\xb5\xa8\xc2\x95Je%\xfeG\'e\xe5\x8f\xf8\xd2\x1c\xc0\xfb\x1c\xa6\xab\bi\xe4^\xd5\xfd\xa9\r\xac7A\x94k\xcd\t\x00\x90k\xd6\x05\xb6\x03\x00\x00\x00A\xc5\x9c_\xd4\x18,\f\xd4s\xb2\x99/\xc0\x9a\xf2Oc\xc0c\x03gB!\xb0\xb8n\x01\x9bT\x95\x10\x86\xe8$\x7f\r[\xf9\x0e1v\xb1\n\x88\v\x95uy\xb5:`\x8b\nC\x18A;\xaa%\xaf\xc7\xa3\xac\xa2D\xb5\xe2\xe1\xdc(\xfd\x05\x9fB\x84O\xfe@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1a\xa0\x17\xe3\xac\xe9\xc9\xa7\x8a\x1b\x03\"&\xac\xcap>\xccZ\x01\xbc\x18\xc1\xb9\xe9\v\x8b\x9c\xb4Q\xd4\x96EV<>\x99\xca\xb3\xe0\xc4tL\xed\xf5W\xbd#\xcf\x8a\x84\xed\x9f/\xd4\xbb\xea;-Dp\xf8\xd0F\x90\xf8\x92Ip6\xf4\x16\xe8\x14\xe0\x92!\x92-F\xe2\x14D\x91\xa8b\x04\xdd\x1d\a\xdc\xe0\x18\x85{\x80Q\xf6k\x96\xfaQ\x9fW\vO\xf0\xe4O\\\xceS\xf0\xde\x049d\x06#\x88\xc3\xdf\x85O\x1c\xc3\xad?r\xd7\x0e\x00\xd7\x83\xb0\x88\x9c\xf6Y-F\x98\xdd\x9c~\xfd\x95\xc3\xb6lC\xaa\"Y\xa2K\xecz\x84:*\xf5Y\xd1\x9b1\x91\x9b\x15\xd4\xec\x02o\x01&\xaa\x90w\xc4\xc7yn\xb5\x1ag\xab&?\xbe\xcb\xe8v\xa8\xe0\xa4\x81sW\xacf\x149\xd2}\xefCGa\x9a$4\x8c\xa5!p\x83\x05\x96%\x02%\xabj\n\x05\x00\x00\x00\x91}&y\xd3\xe1\xeep\'\xc5\xab\x19GsX5\x8c\n\x9fh\xee;4\xb1%V\xe0\xa9\x8e\xf30:\xd8\x18N~G\x139\xcas\xf4D\xd4\xd0s\r3\xcb\x9a&\xdf+(\xc9S\x9eL5\x84\xb1\x90pN\xe7/\r\b\x9a\xf13Q\xf9\xdf\x7fX\xa0\xafK\xefh\xbfOv\x9bh\xb3\xc0\xf5\x80\xba\"@\'\x02\xafi\xeaE\xa6a6F\xde\xd4\xfa\x84\xe4+A\xb7\xa2\x8f\xc9\xee|xxn\xefw\x93]%\xd0\x19\x132\x86\xabn\xfe\x91\xb6Cl\xcf\x04\x1cq\xc1\x1d~\x8d\x01\x83\x93_\x83\x8a`v\xb0K,|S\xe4\xba\xb1\f\xc8`\xa6s\xad\x11\xd4wG\x80u\x87u\xff\x87\xee', 0x2) ioctl$FS_IOC_RESVSP(r1, 0x40305828, &(0x7f0000000040)={0x0, 0x1, 0x8, 0x1000007}) executing program 3: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) ptrace$setregs(0xd, r0, 0x20000000002, &(0x7f0000000040)) ptrace$cont(0x9, r0, 0x7ff, 0x3) ptrace$cont(0x7, r0, 0x80000001, 0x4) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 3/3 bisect: split chunks (needed=true): <8> bisect: split chunk #0 of len 8 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5] detailed listing: executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff) mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0) setxattr$security_selinux(&(0x7f0000000180)='./mnt\x00', &(0x7f0000000040), &(0x7f0000000000)='system_u:object_r:auditd_unit_file_t:s0\x00', 0x28, 0x3) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x0) mount$bind(&(0x7f0000000000)='.\x00', &(0x7f0000000200)='./file0/../file0\x00', 0x0, 0x101091, 0x0) mount$tmpfs(0x0, &(0x7f00000001c0)='./file0\x00', 0x0, 0x20000, 0x0) mount$bind(&(0x7f0000000240)='.\x00', &(0x7f0000000280)='./file0/file0\x00', 0x0, 0x11050ca, 0x0) open_tree(0xffffffffffffff9c, &(0x7f0000000640)='\x00', 0x89101) executing program 0: r0 = gettid() timer_create(0x0, &(0x7f0000533fa0)={0x0, 0x21, 0x800000000004, @tid=r0}, &(0x7f0000000040)) timer_settime(0x0, 0x0, &(0x7f00000000c0)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) r1 = memfd_create(&(0x7f0000000ec0)='\x103q}2[\xe0\x9a\xee\xaf\x03\x97\x9et\v\"|Ma\x86\xe7\xc0\x14\x9f\xb9h\xb1\x96\xe7=I\x860S6\xb5\xa8\xc2\x95Je%\xfeG\'e\xe5\x8f\xf8\xd2\x1c\xc0\xfb\x1c\xa6\xab\bi\xe4^\xd5\xfd\xa9\r\xac7A\x94k\xcd\t\x00\x90k\xd6\x05\xb6\x03\x00\x00\x00A\xc5\x9c_\xd4\x18,\f\xd4s\xb2\x99/\xc0\x9a\xf2Oc\xc0c\x03gB!\xb0\xb8n\x01\x9bT\x95\x10\x86\xe8$\x7f\r[\xf9\x0e1v\xb1\n\x88\v\x95uy\xb5:`\x8b\nC\x18A;\xaa%\xaf\xc7\xa3\xac\xa2D\xb5\xe2\xe1\xdc(\xfd\x05\x9fB\x84O\xfe@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1a\xa0\x17\xe3\xac\xe9\xc9\xa7\x8a\x1b\x03\"&\xac\xcap>\xccZ\x01\xbc\x18\xc1\xb9\xe9\v\x8b\x9c\xb4Q\xd4\x96EV<>\x99\xca\xb3\xe0\xc4tL\xed\xf5W\xbd#\xcf\x8a\x84\xed\x9f/\xd4\xbb\xea;-Dp\xf8\xd0F\x90\xf8\x92Ip6\xf4\x16\xe8\x14\xe0\x92!\x92-F\xe2\x14D\x91\xa8b\x04\xdd\x1d\a\xdc\xe0\x18\x85{\x80Q\xf6k\x96\xfaQ\x9fW\vO\xf0\xe4O\\\xceS\xf0\xde\x049d\x06#\x88\xc3\xdf\x85O\x1c\xc3\xad?r\xd7\x0e\x00\xd7\x83\xb0\x88\x9c\xf6Y-F\x98\xdd\x9c~\xfd\x95\xc3\xb6lC\xaa\"Y\xa2K\xecz\x84:*\xf5Y\xd1\x9b1\x91\x9b\x15\xd4\xec\x02o\x01&\xaa\x90w\xc4\xc7yn\xb5\x1ag\xab&?\xbe\xcb\xe8v\xa8\xe0\xa4\x81sW\xacf\x149\xd2}\xefCGa\x9a$4\x8c\xa5!p\x83\x05\x96%\x02%\xabj\n\x05\x00\x00\x00\x91}&y\xd3\xe1\xeep\'\xc5\xab\x19GsX5\x8c\n\x9fh\xee;4\xb1%V\xe0\xa9\x8e\xf30:\xd8\x18N~G\x139\xcas\xf4D\xd4\xd0s\r3\xcb\x9a&\xdf+(\xc9S\x9eL5\x84\xb1\x90pN\xe7/\r\b\x9a\xf13Q\xf9\xdf\x7fX\xa0\xafK\xefh\xbfOv\x9bh\xb3\xc0\xf5\x80\xba\"@\'\x02\xafi\xeaE\xa6a6F\xde\xd4\xfa\x84\xe4+A\xb7\xa2\x8f\xc9\xee|xxn\xefw\x93]%\xd0\x19\x132\x86\xabn\xfe\x91\xb6Cl\xcf\x04\x1cq\xc1\x1d~\x8d\x01\x83\x93_\x83\x8a`v\xb0K,|S\xe4\xba\xb1\f\xc8`\xa6s\xad\x11\xd4wG\x80u\x87u\xff\x87\xee', 0x2) ioctl$FS_IOC_RESVSP(r1, 0x40305828, &(0x7f0000000040)={0x0, 0x1, 0x8, 0x1000007}) executing program 3: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) ptrace$setregs(0xd, r0, 0x20000000002, &(0x7f0000000040)) ptrace$cont(0x9, r0, 0x7ff, 0x3) ptrace$cont(0x7, r0, 0x80000001, 0x4) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5] detailed listing: executing program 1: mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x8) r0 = socket$inet6(0xa, 0x3, 0xff) r1 = dup(r0) r2 = dup(r1) ioctl$SIOCGETNODEID(r2, 0x89e1, 0x0) executing program 2: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000000), 0x40, 0x0) mount(0x0, &(0x7f0000000000)='./trace\x00', 0x0, 0x1a88460, 0x0) openat(0xffffffffffffff9c, 0x0, 0x660200, 0xdd) write(0xffffffffffffffff, 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40247007, &(0x7f0000000040)={0x22, 0x16, 0x402, 0xa, 0x2000000, 0x101, 0x5, 0x13d, 0x1}) executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: split chunks (needed=true): <4> bisect: split chunk #0 of len 4 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5] detailed listing: executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <2> bisect: split chunk #0 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$tun-ioctl$TUNSETIFF-socket$inet_udp-ioctl$sock_inet_SIOCSIFFLAGS-write$tun detailed listing: executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001}) r1 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1}) write$tun(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="02031b003000140006006332c5ab00482fff00000000000000000000ffffac141419ff02000000000000000000000000000104206558000000030100080000080c0086dd7f88be000000041807e8070100000000000009080022eb000000042c153707020000000000000000089f1d08"], 0x7a) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mkdir-mount$incfs-chdir-stat detailed listing: executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: split chunks (needed=true): <1> bisect: split chunk #0 of len 1 into 2 parts bisect: no way to further split the chunk bisect: 1 programs left: executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) bisect: trying to concatenate bisect: concatenate 1 entries testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mkdir-mount$incfs-chdir-stat detailed listing: executing program 0: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') stat(&(0x7f0000000700)='./file0\x00', &(0x7f0000000740)) program crashed: WARNING in shmem_rmdir bisect: concatenation succeeded found reproducer with 5 syscalls minimizing guilty program testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mkdir-mount$incfs-chdir detailed listing: executing program 0: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) chdir(&(0x7f00000003c0)='./bus\x00') program crashed: WARNING in shmem_rmdir testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mkdir-mount$incfs detailed listing: executing program 0: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program crashed: WARNING in shmem_rmdir testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mkdir detailed listing: executing program 0: creat(&(0x7f0000000000)='./file0\x00', 0x40) mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) program did not crash testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): creat-mount$incfs detailed listing: executing program 0: creat(&(0x7f0000000000)='./file0\x00', 0x40) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program did not crash testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program crashed: WARNING in shmem_rmdir testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(0x0, 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program did not crash testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(0x0, &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program did not crash testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', 0x0, &(0x7f0000000000), 0xc002, 0x0) program did not crash testing program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', 0x0, 0xc002, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=44.611476578s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir simplifying C reproducer testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true testing program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true testing program (duration=44.611476578s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000001c0)='./bus\x00', 0x57) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000000), 0xc002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true reproducing took 34m32.650844406s repro crashed as (corrupted=false): veth0_vlan: entered promiscuous mode veth1_macvtap: entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 377 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340 Modules linked in: CPU: 0 UID: 0 PID: 377 Comm: syz-executor Not tainted syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340 Code: 04 00 00 be 08 00 00 00 e8 ff 0b ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 92 93 94 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c RSP: 0018:ffffc90001b3fc88 EFLAGS: 00010293 RAX: ffffffff81f4b92e RBX: ffff88811477e5a0 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcb0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000367f80 R12: dffffc0000000000 R13: 1ffff110228efcbd R14: ffff88811477e5e8 R15: 0000000000000000 FS: 000055558378e500(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555837b1958 CR3: 000000010c30e000 CR4: 00000000003526b0 Call Trace: shmem_rmdir+0x5f/0x90 mm/shmem.c:3820 vfs_rmdir+0x3db/0x560 fs/namei.c:4348 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452 Write of size 4 at addr 0000000000000168 by task syz-executor/377 CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G W syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120 print_report+0x3d/0x70 mm/kasan/report.c:484 kasan_report+0x162/0x1a0 mm/kasan/report.c:594 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] ihold+0x24/0x70 fs/inode.c:452 d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x25c/0x560 fs/namei.c:4361 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000168 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 8000000114d37067 P4D 8000000114d37067 PUD 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G B W syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Tainted: [B]=BAD_PAGE, [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 7d 8a 94 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 bc 02 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 8d RSP: 0018:ffffc90001b3fcc8 EFLAGS: 00010246 RAX: ffff8881140b3b00 RBX: 0000000000000000 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcd8 R08: ffffffff893c8947 R09: 1ffffffff1279128 R10: dffffc0000000000 R11: fffffbfff1279129 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 000055558378e500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000010c30e000 CR4: 00000000003526b0 Call Trace: d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x25c/0x560 fs/namei.c:4361 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 Modules linked in: CR2: 0000000000000168 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 7d 8a 94 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 bc 02 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 8d RSP: 0018:ffffc90001b3fcc8 EFLAGS: 00010246 RAX: ffff8881140b3b00 RBX: 0000000000000000 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcd8 R08: ffffffff893c8947 R09: 1ffffffff1279128 R10: dffffc0000000000 R11: fffffbfff1279129 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 000055558378e500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000010c30e000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: f3 0f 1e fa endbr64 4: 55 push %rbp 5: 48 89 e5 mov %rsp,%rbp 8: 41 56 push %r14 a: 53 push %rbx b: 48 89 fb mov %rdi,%rbx e: e8 7d 8a 94 ff call 0xff948a90 13: 48 8d bb 68 01 00 00 lea 0x168(%rbx),%rdi 1a: be 04 00 00 00 mov $0x4,%esi 1f: e8 bc 02 ee ff call 0xffee02e0 24: 41 be 01 00 00 00 mov $0x1,%r14d * 2a: f0 44 0f c1 b3 68 01 lock xadd %r14d,0x168(%rbx) <-- trapping instruction 31: 00 00 33: 41 ff c6 inc %r14d 36: bf 02 00 00 00 mov $0x2,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: 8d .byte 0x8d final repro crashed as (corrupted=false): veth0_vlan: entered promiscuous mode veth1_macvtap: entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 377 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340 Modules linked in: CPU: 0 UID: 0 PID: 377 Comm: syz-executor Not tainted syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340 Code: 04 00 00 be 08 00 00 00 e8 ff 0b ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 92 93 94 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c RSP: 0018:ffffc90001b3fc88 EFLAGS: 00010293 RAX: ffffffff81f4b92e RBX: ffff88811477e5a0 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcb0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000367f80 R12: dffffc0000000000 R13: 1ffff110228efcbd R14: ffff88811477e5e8 R15: 0000000000000000 FS: 000055558378e500(0000) GS:ffff8881f6c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555837b1958 CR3: 000000010c30e000 CR4: 00000000003526b0 Call Trace: shmem_rmdir+0x5f/0x90 mm/shmem.c:3820 vfs_rmdir+0x3db/0x560 fs/namei.c:4348 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452 Write of size 4 at addr 0000000000000168 by task syz-executor/377 CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G W syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120 print_report+0x3d/0x70 mm/kasan/report.c:484 kasan_report+0x162/0x1a0 mm/kasan/report.c:594 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] ihold+0x24/0x70 fs/inode.c:452 d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x25c/0x560 fs/namei.c:4361 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000168 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 8000000114d37067 P4D 8000000114d37067 PUD 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G B W syzkaller #0 9109b4058d136ef0ac9398910d6f8e272823abe4 Tainted: [B]=BAD_PAGE, [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 7d 8a 94 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 bc 02 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 8d RSP: 0018:ffffc90001b3fcc8 EFLAGS: 00010246 RAX: ffff8881140b3b00 RBX: 0000000000000000 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcd8 R08: ffffffff893c8947 R09: 1ffffffff1279128 R10: dffffc0000000000 R11: fffffbfff1279129 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 000055558378e500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000010c30e000 CR4: 00000000003526b0 Call Trace: d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x25c/0x560 fs/namei.c:4361 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1970 deactivate_locked_super+0xd2/0x270 fs/super.c:478 deactivate_super+0xb8/0xe0 fs/super.c:511 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e8/0x260 kernel/task_work.c:246 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ff8ad99f417 Code: a2 c7 05 dc 62 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc926e5e48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8ad99f417 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc926e5f00 RBP: 00007ffc926e5f00 R08: 00007ffc926e6f00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc926e6f90 R13: 00007ff8ada34ccb R14: 0000000000008812 R15: 00007ffc926e6fd0 Modules linked in: CR2: 0000000000000168 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 7d 8a 94 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 bc 02 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 8d RSP: 0018:ffffc90001b3fcc8 EFLAGS: 00010246 RAX: ffff8881140b3b00 RBX: 0000000000000000 RCX: ffff8881140b3b40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90001b3fcd8 R08: ffffffff893c8947 R09: 1ffffffff1279128 R10: dffffc0000000000 R11: fffffbfff1279129 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 000055558378e500(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000010c30e000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: f3 0f 1e fa endbr64 4: 55 push %rbp 5: 48 89 e5 mov %rsp,%rbp 8: 41 56 push %r14 a: 53 push %rbx b: 48 89 fb mov %rdi,%rbx e: e8 7d 8a 94 ff call 0xff948a90 13: 48 8d bb 68 01 00 00 lea 0x168(%rbx),%rdi 1a: be 04 00 00 00 mov $0x4,%esi 1f: e8 bc 02 ee ff call 0xffee02e0 24: 41 be 01 00 00 00 mov $0x1,%r14d * 2a: f0 44 0f c1 b3 68 01 lock xadd %r14d,0x168(%rbx) <-- trapping instruction 31: 00 00 33: 41 ff c6 inc %r14d 36: bf 02 00 00 00 mov $0x2,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: 8d .byte 0x8d