syzkaller syzkaller login: [ 21.083302][ T36] kauditd_printk_skb: 31 callbacks suppressed [ 21.083321][ T36] audit: type=1400 audit(1785523450.610:59): avc: denied { transition } for pid=274 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.088453][ T36] audit: type=1400 audit(1785523450.610:60): avc: denied { noatsecure } for pid=274 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.093170][ T36] audit: type=1400 audit(1785523450.620:61): avc: denied { write } for pid=274 comm="sh" path="pipe:[2592]" dev="pipefs" ino=2592 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 21.096838][ T36] audit: type=1400 audit(1785523450.620:62): avc: denied { rlimitinh } for pid=274 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.101493][ T36] audit: type=1400 audit(1785523450.620:63): avc: denied { siginh } for pid=274 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.243' (ED25519) to the list of known hosts. 2026/07/31 18:44:20 parsed 1 programs 2026/07/31 18:44:20 serving rpc on tcp://43729 [ 31.298640][ T36] audit: type=1400 audit(1785523460.820:64): avc: denied { node_bind } for pid=302 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 32.857797][ T36] audit: type=1400 audit(1785523462.380:65): avc: denied { mounton } for pid=309 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 32.861775][ T309] cgroup: Unknown subsys name 'net' [ 32.881718][ T36] audit: type=1400 audit(1785523462.380:66): avc: denied { mount } for pid=309 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 32.910015][ T36] audit: type=1400 audit(1785523462.410:67): avc: denied { unmount } for pid=309 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 32.910702][ T309] cgroup: Unknown subsys name 'devices' [ 33.035312][ T309] cgroup: Unknown subsys name 'hugetlb' [ 33.041020][ T309] cgroup: Unknown subsys name 'rlimit' [ 33.148296][ T36] audit: type=1400 audit(1785523462.670:68): avc: denied { setattr } for pid=309 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=190 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 33.172153][ T36] audit: type=1400 audit(1785523462.670:69): avc: denied { create } for pid=309 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 33.192813][ T36] audit: type=1400 audit(1785523462.670:70): avc: denied { write } for pid=309 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 33.213480][ T36] audit: type=1400 audit(1785523462.670:71): avc: denied { read } for pid=309 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 33.234333][ T36] audit: type=1400 audit(1785523462.670:72): avc: denied { sys_module } for pid=309 comm="syz-executor" capability=16 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability permissive=1 [ 33.241708][ T312] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 33.256884][ T36] audit: type=1400 audit(1785523462.680:73): avc: denied { mounton } for pid=309 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 33.303086][ T309] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 34.239131][ T315] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 34.601904][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.609436][ T336] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.616943][ T336] bridge_slave_0: entered allmulticast mode [ 34.623602][ T336] bridge_slave_0: entered promiscuous mode [ 34.631006][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.638291][ T336] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.645610][ T336] bridge_slave_1: entered allmulticast mode [ 34.652309][ T336] bridge_slave_1: entered promiscuous mode [ 34.706282][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.713500][ T336] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.720848][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.728106][ T336] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.758733][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.766377][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.776847][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.784032][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.795347][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.802469][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.828864][ T336] veth0_vlan: entered promiscuous mode [ 34.841370][ T336] veth1_macvtap: entered promiscuous mode [ 34.894157][ T340] bridge_slave_1: left allmulticast mode [ 34.899880][ T340] bridge_slave_1: left promiscuous mode [ 34.906171][ T340] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.914566][ T340] bridge_slave_0: left allmulticast mode [ 34.920340][ T340] bridge_slave_0: left promiscuous mode [ 34.926553][ T340] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.063669][ T340] veth1_macvtap: left promiscuous mode [ 35.069302][ T340] veth0_vlan: left promiscuous mode 2026/07/31 18:44:25 executed programs: 0 [ 35.786981][ T377] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.794229][ T377] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.801351][ T377] bridge_slave_0: entered allmulticast mode [ 35.807942][ T377] bridge_slave_0: entered promiscuous mode [ 35.815274][ T377] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.822449][ T377] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.829748][ T377] bridge_slave_1: entered allmulticast mode [ 35.836342][ T377] bridge_slave_1: entered promiscuous mode [ 35.887677][ T377] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.895209][ T377] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.902623][ T377] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.909694][ T377] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.932501][ T340] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.940003][ T340] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.950351][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.957495][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.966821][ T340] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.973930][ T340] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.000670][ T377] veth0_vlan: entered promiscuous mode [ 36.012317][ T377] veth1_macvtap: entered promiscuous mode [ 36.052023][ T335] device offline error, dev sda, sector 1114422 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 2 [ 36.062733][ T335] EXT4-fs warning (device sda1): ext4_end_bio:357: I/O error 16 writing to inode 2029 starting block 139302) [ 36.074416][ T340] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2029, error -5) [ 36.078542][ T335] device offline error, dev sda, sector 1114926 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 2 [ 36.087519][ T340] Buffer I/O error on device sda1, logical block 139264 [ 36.098015][ T335] EXT4-fs warning (device sda1): ext4_end_bio:357: I/O error 16 writing to inode 2029 starting block 139365) [ 36.116654][ T340] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2029, error -5) [ 36.116653][ T335] device offline error, dev sda, sector 1126646 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 2 [ 36.116689][ T335] EXT4-fs warning (device sda1): ext4_end_bio:357: I/O error 16 writing to inode 2029 starting block 140830) [ 36.130382][ T340] Buffer I/O error on device sda1, logical block 139327 [ 36.140133][ T335] device offline error, dev sda, sector 1143030 op 0x1:(WRITE) flags 0x0 phys_seg 5 prio class 2 [ 36.154064][ T340] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2029, error -5) [ 36.159658][ T335] EXT4-fs warning (device sda1): ext4_end_bio:357: I/O error 16 writing to inode 2029 starting block 142878) [ 36.170841][ T340] Buffer I/O error on device sda1, logical block 140792 [ 36.183304][ T335] device offline error, dev sda, sector 1040694 op 0x1:(WRITE) flags 0x0 phys_seg 1 prio class 2 [ 36.195421][ T340] Buffer I/O error on device sda1, logical block 140793 [ 36.202519][ T335] EXT4-fs warning (device sda1): ext4_end_bio:357: I/O error 16 writing to inode 2028 starting block 130086) [ 36.213635][ T340] Buffer I/O error on device sda1, logical block 140794 [ 36.238446][ T340] Buffer I/O error on device sda1, logical block 140795 [ 36.245550][ T340] Buffer I/O error on device sda1, logical block 140796 [ 36.252997][ T340] Buffer I/O error on device sda1, logical block 140797 [ 36.260064][ T340] Buffer I/O error on device sda1, logical block 140798 [ 36.267273][ T340] Buffer I/O error on device sda1, logical block 140799 [ 36.274687][ T340] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2029, error -5) [ 36.287575][ T340] EXT4-fs (sda1): failed to convert unwritten extents to written extents -- potential data loss! (inode 2028, error -5) [ 36.301390][ T381] device offline error, dev sda, sector 310 op 0x1:(WRITE) flags 0x3000 phys_seg 1 prio class 2 [ 36.303763][ T73] device offline error, dev sda, sector 1049790 op 0x1:(WRITE) flags 0x9800 phys_seg 42 prio class 2 [ 36.312169][ T381] Buffer I/O error on dev sda1, logical block 0, lost async page write [ 36.324127][ T73] Buffer I/O error on dev sda1, logical block 131185, lost sync page write [ 36.332002][ T381] device offline error, dev sda, sector 1350 op 0x1:(WRITE) flags 0x3000 phys_seg 1 prio class 2 [ 36.343566][ T73] Aborting journal on device sda1-8. [ 36.351741][ T381] Buffer I/O error on dev sda1, logical block 130, lost async page write [ 36.356994][ T73] device offline error, dev sda, sector 1048886 op 0x1:(WRITE) flags 0x9800 phys_seg 1 prio class 2 [ 36.366005][ T381] device offline error, dev sda, sector 1414 op 0x1:(WRITE) flags 0x3000 phys_seg 1 prio class 2 [ 36.376633][ T73] Buffer I/O error on dev sda1, logical block 131072, lost sync page write [ 36.387249][ T381] Buffer I/O error on dev sda1, logical block 138, lost async page write [ 36.395780][ T73] JBD2: I/O error when updating journal superblock for sda1-8. [ 36.405250][ T381] Buffer I/O error on dev sda1, logical block 145, lost async page write [ 36.420621][ T381] Buffer I/O error on dev sda1, logical block 226, lost async page write [ 36.429181][ T381] Buffer I/O error on dev sda1, logical block 657, lost async page write [ 36.437979][ T381] Buffer I/O error on dev sda1, logical block 4241, lost async page write [ 36.446725][ T381] Buffer I/O error on dev sda1, logical block 4260, lost async page write [ 36.465587][ T381] EXT4-fs (sda1): shut down requested (2) [ 36.472856][ T92] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 36.481993][ T92] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 Jul 31 18:44:26 syzkaller kern.alert kernel: [ 36.465587][ T381] EXT4-fs (sda1): shut down requested (2) [ 36.526142][ T381] sd 0:0:1:0: [sda] Synchronizing SCSI cache [ 36.641384][ T36] kauditd_printk_skb: 39 callbacks suppressed [ 36.641403][ T36] audit: type=1400 audit(1785523466.160:113): avc: denied { unmount } for pid=377 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysfs_t tclass=filesystem permissive=1 2026/07/31 18:44:30 executed programs: 242 [ 40.753571][ T36] audit: type=1400 audit(1785523470.280:114): avc: denied { write } for pid=302 comm="syz-execprog" path="pipe:[1884]" dev="pipefs" ino=1884 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 2026/07/31 18:44:35 executed programs: 542 SYZFAIL: posix_spawnp failed (errno 5: Input/output error) connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF [ 46.840940][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.851422][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.860570][ T340] bridge_slave_1: left allmulticast mode [ 46.861462][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.866291][ T340] bridge_slave_1: left promiscuous mode [ 46.866581][ T340] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.876370][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.897139][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.906338][ T340] bridge_slave_0: left allmulticast mode [ 46.906637][ T1] SELinux: inode_doinit_use_xattr: getxattr returned 5 for dev=sda1 ino=2001 [ 46.912053][ T340] bridge_slave_0: left promiscuous mode [ 46.932621][ T340] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.034871][ T340] veth1_macvtap: left promiscuous mode [ 47.040453][ T340] veth0_vlan: left promiscuous mode