no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 13.178982][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 13.178988][ T22] audit: type=1400 audit(1634469407.729:71): avc: denied { transition } for pid=264 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.185702][ T22] audit: type=1400 audit(1634469407.729:72): avc: denied { write } for pid=264 comm="sh" path="pipe:[10689]" dev="pipefs" ino=10689 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 14.004315][ T265] sshd (265) used greatest stack depth: 22736 bytes left Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. executing program [ 52.982258][ T22] audit: type=1400 audit(1634469447.529:73): avc: denied { execmem } for pid=298 comm="syz-executor963" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 53.002562][ T22] audit: type=1400 audit(1634469447.559:74): avc: denied { create } for pid=299 comm="syz-executor963" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 53.023359][ T22] audit: type=1400 audit(1634469447.559:75): avc: denied { write } for pid=299 comm="syz-executor963" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 53.044024][ T22] audit: type=1400 audit(1634469447.559:76): avc: denied { read } for pid=299 comm="syz-executor963" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 executing program [ 58.002043][ T12] cfg80211: failed to load regulatory.db [ 58.033943][ T301] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 58.043480][ T301] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db [ 58.052460][ T301] ================================================================== [ 58.060511][ T301] BUG: KASAN: use-after-free in __list_add_valid+0x36/0xc0 [ 58.071312][ T301] Read of size 8 at addr ffff8881efbc2488 by task syz-executor963/301 [ 58.087964][ T301] [ 58.093468][ T301] CPU: 1 PID: 301 Comm: syz-executor963 Not tainted 5.4.125-syzkaller-00028-g73e6d86c30ee #0 [ 58.103586][ T301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.113709][ T301] Call Trace: [ 58.116991][ T301] dump_stack+0x1d8/0x24e [ 58.121292][ T301] ? show_regs_print_info+0x12/0x12 [ 58.126464][ T301] ? printk+0xcf/0x114 [ 58.130532][ T301] print_address_description+0x9b/0x650 [ 58.136068][ T301] ? devkmsg_release+0x11c/0x11c [ 58.140985][ T301] ? device_add+0x5d8/0x18a0 [ 58.145543][ T301] __kasan_report+0x182/0x260 [ 58.150187][ T301] ? __list_add_valid+0x36/0xc0 [ 58.155003][ T301] kasan_report+0x30/0x60 [ 58.159311][ T301] __list_add_valid+0x36/0xc0 [ 58.163957][ T301] firmware_fallback_sysfs+0x480/0xb20 [ 58.169382][ T301] _request_firmware+0x1287/0x1770 [ 58.174543][ T301] ? request_firmware+0x50/0x50 [ 58.179360][ T301] ? __nla_validate+0x50/0x50 [ 58.184000][ T301] request_firmware+0x33/0x50 [ 58.188645][ T301] reg_reload_regdb+0xa0/0x220 [ 58.193387][ T301] ? reg_query_regdb_wmm+0x510/0x510 [ 58.198645][ T301] ? nl80211_pre_doit+0x156/0x590 [ 58.203648][ T301] genl_rcv_msg+0xed8/0x13b0 [ 58.208213][ T301] ? genl_rcv+0x40/0x40 [ 58.212430][ T301] ? rhashtable_jhash2+0x1bf/0x2e0 [ 58.217694][ T301] ? jhash+0x740/0x740 [ 58.221738][ T301] ? rht_key_hashfn+0x112/0x1e0 [ 58.226577][ T301] ? rht_lock+0x100/0x100 [ 58.230874][ T301] ? __sys_sendmsg+0x2c4/0x3b0 [ 58.235612][ T301] ? rht_key_hashfn+0x1e0/0x1e0 [ 58.240488][ T301] ? netlink_hash+0xd0/0xd0 [ 58.244959][ T301] netlink_rcv_skb+0x200/0x480 [ 58.249690][ T301] ? genl_rcv+0x40/0x40 [ 58.253813][ T301] ? netlink_ack+0xab0/0xab0 [ 58.258380][ T301] ? __down_read+0xf1/0x210 [ 58.262859][ T301] ? __init_rwsem+0x200/0x200 [ 58.267504][ T301] ? __rcu_read_lock+0x50/0x50 [ 58.272240][ T301] ? selinux_vm_enough_memory+0x170/0x170 [ 58.277928][ T301] genl_rcv+0x24/0x40 [ 58.281881][ T301] netlink_unicast+0x865/0x9f0 [ 58.286618][ T301] ? netlink_detachskb+0x40/0x40 [ 58.291524][ T301] ? _copy_from_iter_full+0x29e/0x830 [ 58.296867][ T301] ? __virt_addr_valid+0x1fd/0x290 [ 58.301945][ T301] netlink_sendmsg+0x9ab/0xd40 [ 58.306677][ T301] ? netlink_getsockopt+0x8e0/0x8e0 [ 58.311927][ T301] ? import_iovec+0x1bc/0x380 [ 58.316574][ T301] ? security_socket_sendmsg+0x9d/0xb0 [ 58.322000][ T301] ? netlink_getsockopt+0x8e0/0x8e0 [ 58.327161][ T301] ____sys_sendmsg+0x583/0x8c0 [ 58.331917][ T301] ? __sys_sendmsg_sock+0x2b0/0x2b0 [ 58.337086][ T301] ? netlink_getsockopt+0x8e0/0x8e0 [ 58.342255][ T301] __sys_sendmsg+0x2c4/0x3b0 [ 58.346826][ T301] ? ____sys_sendmsg+0x8c0/0x8c0 [ 58.351738][ T301] ? check_preemption_disabled+0x154/0x330 [ 58.357511][ T301] ? do_user_addr_fault+0x6b0/0xb40 [ 58.362677][ T301] do_syscall_64+0xcb/0x1e0 [ 58.367148][ T301] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.373008][ T301] RIP: 0033:0x7f7224c7bf59 [ 58.377390][ T301] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 58.396957][ T301] RSP: 002b:00007ffc63ab6228 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.405332][ T301] RAX: ffffffffffffffda RBX: 0000000000000064 RCX: 00007f7224c7bf59 [ 58.413270][ T301] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 [ 58.421209][ T301] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc63ab6250 [ 58.429147][ T301] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc63ab624c [ 58.437085][ T301] R13: 00007ffc63ab6280 R14: 00007ffc63ab6260 R15: 0000000000000001 [ 58.445035][ T301] [ 58.447331][ T301] Allocated by task 12: [ 58.451483][ T301] __kasan_kmalloc+0x137/0x1e0 [ 58.456213][ T301] kmem_cache_alloc_trace+0x139/0x2b0 [ 58.461548][ T301] _request_firmware+0x524/0x1770 [ 58.466536][ T301] request_firmware_work_func+0x121/0x260 [ 58.472219][ T301] process_one_work+0x679/0x1030 [ 58.477121][ T301] worker_thread+0xa6f/0x1400 [ 58.481776][ T301] kthread+0x30f/0x330 [ 58.485809][ T301] ret_from_fork+0x1f/0x30 [ 58.490185][ T301] [ 58.492481][ T301] Freed by task 12: [ 58.496255][ T301] __kasan_slab_free+0x18a/0x240 [ 58.501156][ T301] slab_free_freelist_hook+0x7b/0x150 [ 58.506518][ T301] kfree+0xe0/0x660 [ 58.510303][ T301] release_firmware+0x47f/0x4d0 [ 58.515143][ T301] _request_firmware+0x145a/0x1770 [ 58.520232][ T301] request_firmware_work_func+0x121/0x260 [ 58.525922][ T301] process_one_work+0x679/0x1030 [ 58.530827][ T301] worker_thread+0xa6f/0x1400 [ 58.535470][ T301] kthread+0x30f/0x330 [ 58.539504][ T301] ret_from_fork+0x1f/0x30 [ 58.543884][ T301] [ 58.546185][ T301] The buggy address belongs to the object at ffff8881efbc2400 [ 58.546185][ T301] which belongs to the cache kmalloc-192 of size 192 [ 58.560202][ T301] The buggy address is located 136 bytes inside of [ 58.560202][ T301] 192-byte region [ffff8881efbc2400, ffff8881efbc24c0) [ 58.573443][ T301] The buggy address belongs to the page: [ 58.579042][ T301] page:ffffea0007bef080 refcount:1 mapcount:0 mapping:ffff8881f5c02a00 index:0x0 [ 58.588108][ T301] flags: 0x8000000000000200(slab) [ 58.593098][ T301] raw: 8000000000000200 dead000000000100 dead000000000122 ffff8881f5c02a00 [ 58.601646][ T301] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 58.610194][ T301] page dumped because: kasan: bad access detected [ 58.616621][ T301] page_owner tracks the page as allocated [ 58.622317][ T301] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY) [ 58.634086][ T301] prep_new_page+0x19a/0x380 [ 58.638644][ T301] get_page_from_freelist+0x550/0x8b0 [ 58.643986][ T301] __alloc_pages_nodemask+0x3a2/0x880 [ 58.649322][ T301] alloc_slab_page+0x39/0x3e0 [ 58.653966][ T301] new_slab+0x97/0x460 [ 58.658016][ T301] ___slab_alloc+0x330/0x4c0 [ 58.662586][ T301] __kmalloc+0x1ee/0x2f0 [ 58.666810][ T301] bio_alloc_bioset+0x15d/0x640 [ 58.671632][ T301] bio_map_kern+0xd5/0x3b0 [ 58.676026][ T301] blk_rq_map_kern+0x25a/0x4a0 [ 58.680766][ T301] __scsi_execute+0xe1/0x5c0 [ 58.685328][ T301] scsi_mode_sense+0x396/0xf30 [ 58.690066][ T301] sd_revalidate_disk+0x2dea/0x7db0 [ 58.695236][ T301] sd_probe+0xa8d/0xf90 [ 58.699364][ T301] really_probe+0x74c/0x1100 [ 58.703923][ T301] driver_probe_device+0xe3/0x240 [ 58.708977][ T301] page last free stack trace: [ 58.713624][ T301] free_pcp_prepare+0x1a9/0x270 [ 58.718478][ T301] __free_pages+0x9c/0x250 [ 58.722860][ T301] __vunmap+0x7b6/0x8f0 [ 58.727073][ T301] free_partitions+0x32/0x40 [ 58.731715][ T301] rescan_partitions+0xcfd/0xd70 [ 58.736619][ T301] __blkdev_get+0x1008/0x1bb0 [ 58.741260][ T301] blkdev_get+0xa1/0x390 [ 58.745471][ T301] __device_add_disk+0xbc4/0x1200 [ 58.750461][ T301] sd_probe+0xa85/0xf90 [ 58.754594][ T301] really_probe+0x74c/0x1100 [ 58.759160][ T301] driver_probe_device+0xe3/0x240 [ 58.764182][ T301] __driver_attach_async_helper+0x196/0x290 [ 58.770046][ T301] async_run_entry_fn+0xea/0x3c0 [ 58.774966][ T301] process_one_work+0x679/0x1030 [ 58.779870][ T301] worker_thread+0xa6f/0x1400 [ 58.784514][ T301] kthread+0x30f/0x330 [ 58.788570][ T301] [ 58.790869][ T301] Memory state around the buggy address: [ 58.796473][ T301] ffff8881efbc2380: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc [ 58.804506][ T301] ffff8881efbc2400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.812537][ T301] >ffff8881efbc2480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 58.820564][ T301] ^ [ 58.824862][ T301] ffff8881efbc2500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.832893][ T301] ffff8881efbc2580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 58.840917][ T301] ================================================================== [ 58.848940][ T301] Disabling lock debugging due to kernel taint executing program [ 63.012871][ T301] syz-executor963 (301) used greatest stack depth: 20240 bytes left [ 63.024338][ T303] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 63.033835][ T303] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db executing program [ 68.029332][ T305] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 [ 68.038810][ T305] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db