Warning: Permanently added '10.128.1.76' (ED25519) to the list of known hosts. 2026/07/27 15:37:45 parsed 1 programs 2026/07/27 15:37:45 serving rpc on tcp://38379 [ 28.290876][ T36] audit: type=1400 audit(1785166665.759:64): 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 [ 29.238328][ T36] audit: type=1400 audit(1785166666.709:65): avc: denied { mounton } for pid=310 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 [ 29.239370][ T310] cgroup: Unknown subsys name 'net' [ 29.260984][ T36] audit: type=1400 audit(1785166666.709:66): avc: denied { mount } for pid=310 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 [ 29.288404][ T36] audit: type=1400 audit(1785166666.739:67): avc: denied { unmount } for pid=310 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 29.288576][ T310] cgroup: Unknown subsys name 'devices' [ 29.412557][ T310] cgroup: Unknown subsys name 'hugetlb' [ 29.418146][ T310] cgroup: Unknown subsys name 'rlimit' [ 29.535733][ T36] audit: type=1400 audit(1785166667.009:68): avc: denied { setattr } for pid=310 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 [ 29.558888][ T36] audit: type=1400 audit(1785166667.009:69): avc: denied { create } for pid=310 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 29.579441][ T36] audit: type=1400 audit(1785166667.009:70): avc: denied { write } for pid=310 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 29.587581][ T312] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 29.599918][ T36] audit: type=1400 audit(1785166667.009:71): avc: denied { read } for pid=310 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 [ 29.628471][ T36] audit: type=1400 audit(1785166667.009:72): avc: denied { sys_module } for pid=310 comm="syz-executor" capability=16 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability permissive=1 [ 29.649674][ T36] audit: type=1400 audit(1785166667.009:73): avc: denied { mounton } for pid=310 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 [ 29.693254][ T310] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 30.610221][ T318] 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. [ 31.232987][ T352] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.240018][ T352] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.247270][ T352] bridge_slave_0: entered allmulticast mode [ 31.254687][ T352] bridge_slave_0: entered promiscuous mode [ 31.262173][ T352] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.269226][ T352] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.276351][ T352] bridge_slave_1: entered allmulticast mode [ 31.282803][ T352] bridge_slave_1: entered promiscuous mode [ 31.370361][ T352] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.377440][ T352] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.384744][ T352] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.391783][ T352] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.443251][ T352] veth0_vlan: entered promiscuous mode [ 31.457258][ T352] veth1_macvtap: entered promiscuous mode 2026/07/27 15:37:49 executed programs: 0 [ 31.656798][ T378] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.664037][ T378] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.671156][ T378] bridge_slave_0: entered allmulticast mode [ 31.677377][ T378] bridge_slave_0: entered promiscuous mode [ 31.697114][ T378] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.704171][ T378] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.711357][ T378] bridge_slave_1: entered allmulticast mode [ 31.717493][ T378] bridge_slave_1: entered promiscuous mode [ 31.725908][ T383] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.732960][ T383] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.740005][ T383] bridge_slave_0: entered allmulticast mode [ 31.746272][ T383] bridge_slave_0: entered promiscuous mode [ 31.754154][ T383] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.761308][ T383] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.768343][ T383] bridge_slave_1: entered allmulticast mode [ 31.774599][ T383] bridge_slave_1: entered promiscuous mode [ 31.782718][ T382] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.789742][ T382] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.796807][ T382] bridge_slave_0: entered allmulticast mode [ 31.803098][ T382] bridge_slave_0: entered promiscuous mode [ 31.821381][ T382] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.828455][ T382] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.835546][ T382] bridge_slave_1: entered allmulticast mode [ 31.841837][ T382] bridge_slave_1: entered promiscuous mode [ 31.896263][ T380] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.903846][ T380] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.911023][ T380] bridge_slave_0: entered allmulticast mode [ 31.917138][ T380] bridge_slave_0: entered promiscuous mode [ 31.926063][ T380] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.933123][ T380] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.940157][ T380] bridge_slave_1: entered allmulticast mode [ 31.946594][ T380] bridge_slave_1: entered promiscuous mode [ 31.970245][ T13] bridge_slave_1: left allmulticast mode [ 31.976019][ T13] bridge_slave_1: left promiscuous mode [ 31.981668][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.989106][ T13] bridge_slave_0: left allmulticast mode [ 31.995144][ T13] bridge_slave_0: left promiscuous mode [ 32.000712][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.114561][ T13] veth1_macvtap: left promiscuous mode [ 32.120084][ T13] veth0_vlan: left promiscuous mode [ 32.178288][ T383] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.185353][ T383] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.192620][ T383] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.199633][ T383] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.208083][ T378] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.215134][ T378] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.222405][ T378] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.229416][ T378] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.253067][ T60] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.260300][ T60] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.267714][ T60] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.275187][ T60] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.314976][ T331] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.322045][ T331] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.336718][ T331] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.343765][ T331] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.365099][ T331] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.372151][ T331] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.384129][ T60] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.391190][ T60] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.399738][ T60] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.406780][ T60] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.414692][ T60] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.421717][ T60] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.429210][ T60] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.436260][ T60] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.444928][ T60] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.451968][ T60] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.492021][ T382] veth0_vlan: entered promiscuous mode [ 32.513455][ T382] veth1_macvtap: entered promiscuous mode [ 32.524060][ T383] veth0_vlan: entered promiscuous mode [ 32.532549][ T380] veth0_vlan: entered promiscuous mode [ 32.553701][ T378] veth0_vlan: entered promiscuous mode [ 32.559939][ T383] veth1_macvtap: entered promiscuous mode [ 32.569408][ T380] veth1_macvtap: entered promiscuous mode [ 32.592570][ T378] veth1_macvtap: entered promiscuous mode 2026/07/27 15:37:54 executed programs: 749 2026/07/27 15:37:59 executed programs: 1826 [ 44.011067][ T371] bridge_slave_1: left allmulticast mode [ 44.020859][ T371] bridge_slave_1: left promiscuous mode [ 44.027200][ T371] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.037053][ T371] bridge_slave_0: left allmulticast mode [ 44.044705][ T371] bridge_slave_0: left promiscuous mode [ 44.050318][ T371] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.154986][ T2748] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.162102][ T2748] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.169184][ T2748] bridge_slave_0: entered allmulticast mode [ 44.194034][ T2748] bridge_slave_0: entered promiscuous mode [ 44.206408][ T2748] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.213876][ T2748] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.237724][ T2748] bridge_slave_1: entered allmulticast mode [ 44.255161][ T2748] bridge_slave_1: entered promiscuous mode [ 44.269105][ T371] veth1_macvtap: left promiscuous mode [ 44.274874][ T371] veth0_vlan: left promiscuous mode [ 44.456911][ T2748] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.464005][ T2748] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.471307][ T2748] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.478343][ T2748] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.542780][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.554748][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.561822][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.629864][ T2748] veth0_vlan: entered promiscuous mode [ 44.665631][ T2748] veth1_macvtap: entered promiscuous mode [ 44.770695][ T13] bridge_slave_1: left allmulticast mode [ 44.778163][ T13] bridge_slave_1: left promiscuous mode [ 44.784083][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.791910][ T13] bridge_slave_0: left allmulticast mode [ 44.813228][ T13] bridge_slave_0: left promiscuous mode [ 44.823605][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.916683][ T2886] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.923805][ T2886] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.937159][ T2886] bridge_slave_0: entered allmulticast mode [ 44.949097][ T2886] bridge_slave_0: entered promiscuous mode [ 44.962102][ T2886] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.974639][ T2886] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.982011][ T2886] bridge_slave_1: entered allmulticast mode [ 44.988472][ T2886] bridge_slave_1: entered promiscuous mode [ 45.008501][ T13] veth1_macvtap: left promiscuous mode [ 45.016214][ T13] veth0_vlan: left promiscuous mode [ 45.177020][ T371] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.184090][ T371] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.210208][ T371] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.217274][ T371] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.260242][ T2886] veth0_vlan: entered promiscuous mode [ 45.278343][ T2886] veth1_macvtap: entered promiscuous mode [ 45.444210][ T2991] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.451342][ T2991] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.467753][ T2991] bridge_slave_0: entered allmulticast mode [ 45.486055][ T2991] bridge_slave_0: entered promiscuous mode [ 45.495483][ T2991] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.506794][ T2991] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.518457][ T2991] bridge_slave_1: entered allmulticast mode [ 45.529053][ T2991] bridge_slave_1: entered promiscuous mode [ 45.544912][ T13] bridge_slave_1: left allmulticast mode [ 45.550551][ T13] bridge_slave_1: left promiscuous mode [ 45.556300][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.572095][ T13] bridge_slave_0: left allmulticast mode [ 45.579886][ T13] bridge_slave_0: left promiscuous mode [ 45.590317][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.786268][ T2991] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.793348][ T2991] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.800580][ T2991] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.807639][ T2991] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.834632][ T13] veth1_macvtap: left promiscuous mode [ 45.840179][ T13] veth0_vlan: left promiscuous mode [ 45.969500][ T371] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.984769][ T371] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.998197][ T331] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.005266][ T331] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.032247][ T331] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.039348][ T331] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.094391][ T2991] veth0_vlan: entered promiscuous mode [ 46.121832][ T2991] veth1_macvtap: entered promiscuous mode [ 46.296994][ T3122] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.306875][ T3122] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.318884][ T3122] bridge_slave_0: entered allmulticast mode [ 46.325398][ T3122] bridge_slave_0: entered promiscuous mode [ 46.334609][ T3122] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.352534][ T3122] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.359826][ T3122] bridge_slave_1: entered allmulticast mode [ 46.368265][ T3122] bridge_slave_1: entered promiscuous mode [ 46.386684][ T13] bridge_slave_1: left allmulticast mode [ 46.394727][ T13] bridge_slave_1: left promiscuous mode [ 46.400456][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.412420][ T13] bridge_slave_0: left allmulticast mode [ 46.418274][ T13] bridge_slave_0: left promiscuous mode [ 46.424116][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.565705][ T13] veth1_macvtap: left promiscuous mode [ 46.571506][ T13] veth0_vlan: left promiscuous mode 2026/07/27 15:38:04 executed programs: 2782 [ 46.728817][ T3122] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.735876][ T3122] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.743148][ T3122] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.750188][ T3122] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.812181][ T60] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.822893][ T60] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.829944][ T60] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.884010][ T3122] veth0_vlan: entered promiscuous mode [ 46.904221][ T3122] veth1_macvtap: entered promiscuous mode 2026/07/27 15:38:09 executed programs: 3869 [ 52.087032][ T4386] ================================================================== [ 52.095143][ T4386] BUG: KASAN: slab-use-after-free in strcmp+0x70/0xc0 [ 52.101929][ T4386] Read of size 1 at addr ffff88812c1d5760 by task syz.4.3980/4386 [ 52.109762][ T4386] [ 52.112090][ T4386] CPU: 1 UID: 0 PID: 4386 Comm: syz.4.3980 Not tainted syzkaller #0 45964a5c932d45c81e53484b258bbb49855afb35 [ 52.112116][ T4386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 [ 52.112134][ T4386] Call Trace: [ 52.112140][ T4386] [ 52.112147][ T4386] __dump_stack+0x21/0x30 [ 52.112174][ T4386] dump_stack_lvl+0x140/0x1c0 [ 52.112196][ T4386] ? __cfi_dump_stack_lvl+0x10/0x10 [ 52.112220][ T4386] print_address_description+0x71/0x210 [ 52.112246][ T4386] print_report+0x4a/0x70 [ 52.112267][ T4386] kasan_report+0x162/0x1a0 [ 52.112289][ T4386] ? strcmp+0x70/0xc0 [ 52.112314][ T4386] ? strcmp+0x70/0xc0 [ 52.112338][ T4386] __asan_report_load1_noabort+0x18/0x20 [ 52.112356][ T4386] strcmp+0x70/0xc0 [ 52.112380][ T4386] algorithm_params_store+0x425/0x790 [ 52.112406][ T4386] ? __cfi_algorithm_params_store+0x10/0x10 [ 52.112430][ T4386] ? __virt_addr_valid+0x2a1/0x370 [ 52.112452][ T4386] ? __kasan_check_write+0x18/0x20 [ 52.112471][ T4386] ? __cfi_algorithm_params_store+0x10/0x10 [ 52.112493][ T4386] dev_attr_store+0x76/0xa0 [ 52.112510][ T4386] ? __cfi_dev_attr_store+0x10/0x10 [ 52.112527][ T4386] sysfs_kf_write+0x141/0x160 [ 52.112542][ T4386] ? __cfi_sysfs_kf_write+0x10/0x10 [ 52.112551][ T4386] kernfs_fop_write_iter+0x316/0x510 [ 52.112566][ T4386] vfs_write+0x762/0xfd0 [ 52.112576][ T4386] ? __cfi_vfs_write+0x10/0x10 [ 52.112593][ T4386] ? __cfi_do_futex+0x10/0x10 [ 52.112608][ T4386] ? __kasan_check_read+0x15/0x20 [ 52.112617][ T4386] ksys_write+0x145/0x260 [ 52.112627][ T4386] ? __cfi_ksys_write+0x10/0x10 [ 52.112637][ T4386] ? __kasan_check_read+0x15/0x20 [ 52.112647][ T4386] __x64_sys_write+0x7f/0x90 [ 52.112657][ T4386] x64_sys_call+0x271c/0x2ee0 [ 52.112667][ T4386] do_syscall_64+0x57/0xf0 [ 52.112678][ T4386] ? clear_bhb_loop+0x50/0xa0 [ 52.112691][ T4386] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 52.112703][ T4386] RIP: 0033:0x7ff936b9de99 [ 52.112713][ T4386] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 52.112722][ T4386] RSP: 002b:00007ffeb90dca18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 52.112738][ T4386] RAX: ffffffffffffffda RBX: 00007ff936e25fa0 RCX: 00007ff936b9de99 [ 52.112746][ T4386] RDX: 000000000000001d RSI: 0000200000000400 RDI: 0000000000000004 [ 52.112753][ T4386] RBP: 00007ff936c33eaf R08: 0000000000000000 R09: 0000000000000000 [ 52.112759][ T4386] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.112765][ T4386] R13: 00007ff936e25fac R14: 00007ff936e25fa0 R15: 00007ff936e25fa0 [ 52.112774][ T4386] [ 52.112777][ T4386] [ 52.372050][ T4386] Allocated by task 4386: [ 52.376355][ T4386] kasan_save_track+0x3e/0x80 [ 52.381013][ T4386] kasan_save_alloc_info+0x3a/0x50 [ 52.386109][ T4386] __kasan_kmalloc+0x96/0xb0 [ 52.390678][ T4386] __kmalloc_node_track_caller_noprof+0x24e/0x4f0 [ 52.397071][ T4386] kstrdup+0x4d/0x130 [ 52.401041][ T4386] __comp_algorithm_store+0x5c/0x250 [ 52.406304][ T4386] comp_algorithm_store+0x6e/0xb0 [ 52.411309][ T4386] dev_attr_store+0x76/0xa0 [ 52.415806][ T4386] sysfs_kf_write+0x141/0x160 [ 52.420457][ T4386] kernfs_fop_write_iter+0x316/0x510 [ 52.425719][ T4386] vfs_write+0x762/0xfd0 [ 52.429942][ T4386] ksys_write+0x145/0x260 [ 52.434248][ T4386] __x64_sys_write+0x7f/0x90 [ 52.438813][ T4386] x64_sys_call+0x271c/0x2ee0 [ 52.443463][ T4386] do_syscall_64+0x57/0xf0 [ 52.447855][ T4386] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 52.453728][ T4386] [ 52.456028][ T4386] Freed by task 4385: [ 52.459994][ T4386] kasan_save_track+0x3e/0x80 [ 52.464655][ T4386] kasan_save_free_info+0x44/0x50 [ 52.469658][ T4386] __kasan_slab_free+0x5f/0x80 [ 52.474398][ T4386] kfree+0x158/0x440 [ 52.478269][ T4386] __comp_algorithm_store+0x190/0x250 [ 52.483620][ T4386] comp_algorithm_store+0x6e/0xb0 [ 52.488619][ T4386] dev_attr_store+0x76/0xa0 [ 52.493178][ T4386] sysfs_kf_write+0x141/0x160 [ 52.497844][ T4386] kernfs_fop_write_iter+0x316/0x510 [ 52.503116][ T4386] vfs_write+0x762/0xfd0 [ 52.507340][ T4386] ksys_write+0x145/0x260 [ 52.511649][ T4386] __x64_sys_write+0x7f/0x90 [ 52.516219][ T4386] x64_sys_call+0x271c/0x2ee0 [ 52.520875][ T4386] do_syscall_64+0x57/0xf0 [ 52.525270][ T4386] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 52.531142][ T4386] [ 52.533444][ T4386] The buggy address belongs to the object at ffff88812c1d5760 [ 52.533444][ T4386] which belongs to the cache kmalloc-8 of size 8 [ 52.547124][ T4386] The buggy address is located 0 bytes inside of [ 52.547124][ T4386] freed 8-byte region [ffff88812c1d5760, ffff88812c1d5768) [ 52.560550][ T4386] [ 52.562862][ T4386] The buggy address belongs to the physical page: [ 52.569252][ T4386] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812c1d54e0 pfn:0x12c1d5 [ 52.579379][ T4386] flags: 0x4000000000000000(zone=1) [ 52.584551][ T4386] page_type: f5(slab) [ 52.588515][ T4386] raw: 4000000000000000 ffff888100041500 ffffea0004279740 dead000000000002 [ 52.597093][ T4386] raw: ffff88812c1d54e0 000000008080006f 00000001f5000000 0000000000000000 [ 52.605647][ T4386] page dumped because: kasan: bad access detected [ 52.612044][ T4386] page_owner tracks the page as allocated [ 52.617739][ T4386] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x152cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 378, tgid 378 (syz-executor), ts 39333964508, free_ts 39333933595 [ 52.636731][ T4386] post_alloc_hook+0x37d/0x3b0 [ 52.641488][ T4386] prep_new_page+0x2d/0x180 [ 52.645975][ T4386] get_page_from_freelist+0x4aea/0x4ba0 [ 52.651501][ T4386] __alloc_pages_noprof+0x35a/0x7e0 [ 52.656683][ T4386] alloc_slab_page+0x6b/0x1e0 [ 52.661341][ T4386] allocate_slab+0x69/0x430 [ 52.665823][ T4386] ___slab_alloc+0x591/0x8c0 [ 52.670390][ T4386] __kmalloc_node_noprof+0x2e7/0x500 [ 52.675652][ T4386] __vmalloc_node_range_noprof+0x529/0x1300 [ 52.681523][ T4386] vzalloc_noprof+0x103/0x1d0 [ 52.686180][ T4386] alloc_counters+0x75/0x520 [ 52.690747][ T4386] do_ipt_get_ctl+0xab5/0x1210 [ 52.695492][ T4386] nf_getsockopt+0x28b/0x2b0 [ 52.700061][ T4386] ip_getsockopt+0x15b/0x200 [ 52.704635][ T4386] tcp_getsockopt+0x103/0x130 [ 52.709288][ T4386] sock_common_getsockopt+0xb2/0xd0 [ 52.714464][ T4386] page last free pid 378 tgid 378 stack trace: [ 52.720592][ T4386] free_unref_page+0xbb8/0xf70 [ 52.725337][ T4386] __free_pages+0x6b/0x3b0 [ 52.729739][ T4386] vfree+0x3ea/0x5b0 [ 52.733623][ T4386] do_ipt_get_ctl+0xef6/0x1210 [ 52.738362][ T4386] nf_getsockopt+0x28b/0x2b0 [ 52.742925][ T4386] ip_getsockopt+0x15b/0x200 [ 52.747510][ T4386] tcp_getsockopt+0x103/0x130 [ 52.752178][ T4386] sock_common_getsockopt+0xb2/0xd0 [ 52.757355][ T4386] do_sock_getsockopt+0x3a4/0x6c0 [ 52.762354][ T4386] __x64_sys_getsockopt+0x1d4/0x280 [ 52.767529][ T4386] x64_sys_call+0x10db/0x2ee0 [ 52.772181][ T4386] do_syscall_64+0x57/0xf0 [ 52.776577][ T4386] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 52.782449][ T4386] [ 52.784752][ T4386] Memory state around the buggy address: [ 52.790355][ T4386] ffff88812c1d5600: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc [ 52.798401][ T4386] ffff88812c1d5680: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc [ 52.806435][ T4386] >ffff88812c1d5700: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc [ 52.814468][ T4386] ^ [ 52.821653][ T4386] ffff88812c1d5780: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc [ 52.829688][ T4386] ffff88812c1d5800: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc [ 52.837721][ T4386] ================================================================== [ 52.850809][ T4386] Disabling lock debugging due to kernel taint [ 52.866491][ T36] kauditd_printk_skb: 33 callbacks suppressed [ 52.866505][ T36] audit: type=1400 audit(1785166690.339:107): avc: denied { read } for pid=92 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 52.899493][ T36] audit: type=1400 audit(1785166690.339:108): avc: denied { search } for pid=92 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 52.931397][ T36] audit: type=1400 audit(1785166690.339:109): avc: denied { write } for pid=92 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 52.968987][ T36] audit: type=1400 audit(1785166690.339:110): avc: denied { add_name } for pid=92 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 53.005324][ T36] audit: type=1400 audit(1785166690.339:111): avc: denied { create } for pid=92 comm="syslogd" name="messages" scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 53.026791][ T36] audit: type=1400 audit(1785166690.339:112): avc: denied { append open } for pid=92 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 53.051384][ T36] audit: type=1400 audit(1785166690.339:113): avc: denied { getattr } for pid=92 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=5 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1