Warning: Permanently added '10.128.1.160' (ED25519) to the list of known hosts. 2024/07/30 06:49:10 ignoring optional flag "sandboxArg"="0" 2024/07/30 06:49:10 parsed 1 programs [ 49.556241][ T1478] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2024/07/30 06:49:13 executed programs: 0 [ 54.212670][ T2454] loop0: detected capacity change from 0 to 1024 [ 54.283184][ T2454] EXT4-fs (loop0): Ignoring removed orlov option [ 54.289623][ T2454] EXT4-fs (loop0): Ignoring removed nomblk_io_submit option [ 54.304111][ T2454] EXT4-fs (loop0): mounted filesystem without journal. Opts: noblock_validity,bsddf,sysvgroups,norecovery,debug_want_extra_isize=0x0000000000000080,orlov,errors=continue,noauto_da_alloc,nomblk_io_submit,,errors=continue. Quota mode: none. [ 54.336083][ T2000] ================================================================== [ 54.344129][ T2000] BUG: KASAN: use-after-free in ext4_xattr_delete_inode+0xc73/0xc90 [ 54.352429][ T2000] Read of size 4 at addr ffff8881209ca000 by task syz-executor/2000 [ 54.360363][ T2000] [ 54.362670][ T2000] CPU: 0 PID: 2000 Comm: syz-executor Not tainted 5.15.164-syzkaller #0 [ 54.370952][ T2000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 54.380998][ T2000] Call Trace: [ 54.384332][ T2000] [ 54.387347][ T2000] dump_stack_lvl+0x41/0x5e [ 54.391819][ T2000] print_address_description.constprop.0.cold+0x6c/0x309 [ 54.398801][ T2000] ? ext4_xattr_delete_inode+0xc73/0xc90 [ 54.404416][ T2000] ? ext4_xattr_delete_inode+0xc73/0xc90 [ 54.410018][ T2000] kasan_report.cold+0x83/0xdf [ 54.414748][ T2000] ? ext4_xattr_delete_inode+0xc73/0xc90 [ 54.420339][ T2000] ext4_xattr_delete_inode+0xc73/0xc90 [ 54.425757][ T2000] ? __lock_acquire.constprop.0+0x478/0xb30 [ 54.431614][ T2000] ? ext4_expand_extra_isize_ea+0x1720/0x1720 [ 54.437644][ T2000] ? ext4_journal_check_start+0x46/0x1d0 [ 54.443238][ T2000] ? __ext4_journal_start_sb+0x226/0x2e0 [ 54.448831][ T2000] ext4_evict_inode+0x823/0x14e0 [ 54.453732][ T2000] ? lock_downgrade+0x4f0/0x4f0 [ 54.458544][ T2000] ? var_wake_function+0x130/0x130 [ 54.463615][ T2000] ? ext4_da_write_begin+0x6d0/0x6d0 [ 54.468861][ T2000] evict+0x296/0x5d0 [ 54.472717][ T2000] vfs_rmdir.part.0+0x36a/0x460 [ 54.477528][ T2000] do_rmdir+0x30b/0x3c0 [ 54.481644][ T2000] ? __ia32_sys_mkdir+0x110/0x110 [ 54.486643][ T2000] ? getname_flags.part.0+0x89/0x440 [ 54.491893][ T2000] __x64_sys_unlinkat+0xa4/0xd0 [ 54.496708][ T2000] do_syscall_64+0x33/0x80 [ 54.501086][ T2000] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 54.506959][ T2000] RIP: 0033:0x7f73dd4406c7 [ 54.511353][ T2000] Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 54.531019][ T2000] RSP: 002b:00007ffd21efedf8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107 [ 54.539560][ T2000] RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007f73dd4406c7 [ 54.547587][ T2000] RDX: 0000000000000200 RSI: 00007ffd21efffa0 RDI: 00000000ffffff9c [ 54.555532][ T2000] RBP: 00007f73dd48c336 R08: 0000000000000000 R09: 0000000000000000 [ 54.563473][ T2000] R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffd21efffa0 [ 54.571495][ T2000] R13: 00007f73dd48c336 R14: 000000000000d3a7 R15: 0000000000000007 [ 54.579437][ T2000] [ 54.582435][ T2000] [ 54.584730][ T2000] Allocated by task 1523: [ 54.589027][ T2000] kasan_save_stack+0x1b/0x40 [ 54.593673][ T2000] __kasan_kmalloc+0x7c/0x90 [ 54.598224][ T2000] __register_sysctl_table+0xfd/0x1190 [ 54.603644][ T2000] unix_sysctl_register+0xb7/0x130 [ 54.608804][ T2000] unix_net_init+0x3c/0xc0 [ 54.613180][ T2000] ops_init+0x9a/0x4a0 [ 54.617217][ T2000] setup_net+0x36f/0x8a0 [ 54.621417][ T2000] copy_net_ns+0x296/0x5b0 [ 54.625810][ T2000] create_new_namespaces+0x35a/0x920 [ 54.631053][ T2000] unshare_nsproxy_namespaces+0x86/0x1a0 [ 54.636644][ T2000] ksys_unshare+0x309/0x6b0 [ 54.641105][ T2000] __x64_sys_unshare+0x28/0x40 [ 54.645827][ T2000] do_syscall_64+0x33/0x80 [ 54.650208][ T2000] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 54.656072][ T2000] [ 54.658363][ T2000] Last potentially related work creation: [ 54.664036][ T2000] kasan_save_stack+0x1b/0x40 [ 54.668671][ T2000] kasan_record_aux_stack+0xc5/0xf0 [ 54.673833][ T2000] kvfree_call_rcu+0x65/0x720 [ 54.678471][ T2000] drop_sysctl_table+0x317/0x440 [ 54.683470][ T2000] unregister_sysctl_table.part.0+0x78/0x140 [ 54.689412][ T2000] unix_sysctl_unregister+0x53/0x70 [ 54.694574][ T2000] unix_net_exit+0x9/0x50 [ 54.698867][ T2000] ops_exit_list+0x8c/0x140 [ 54.703337][ T2000] cleanup_net+0x423/0x980 [ 54.707730][ T2000] process_one_work+0x800/0x11a0 [ 54.712656][ T2000] worker_thread+0x4a0/0xdd0 [ 54.717209][ T2000] kthread+0x2f8/0x3b0 [ 54.721255][ T2000] ret_from_fork+0x1f/0x30 [ 54.725631][ T2000] [ 54.727923][ T2000] The buggy address belongs to the object at ffff8881209ca000 [ 54.727923][ T2000] which belongs to the cache kmalloc-128 of size 128 [ 54.742079][ T2000] The buggy address is located 0 bytes inside of [ 54.742079][ T2000] 128-byte region [ffff8881209ca000, ffff8881209ca080) [ 54.755618][ T2000] The buggy address belongs to the page: [ 54.761313][ T2000] page:ffffea0004827280 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8881209ca900 pfn:0x1209ca [ 54.772824][ T2000] flags: 0x200000000000200(slab|node=0|zone=2) [ 54.778945][ T2000] raw: 0200000000000200 0000000000000000 0000000a00000001 ffff8881000418c0 [ 54.787682][ T2000] raw: ffff8881209ca900 0000000080100006 00000001ffffffff 0000000000000000 [ 54.796236][ T2000] page dumped because: kasan: bad access detected [ 54.802614][ T2000] page_owner tracks the page as allocated [ 54.808298][ T2000] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 1523, ts 49704702549, free_ts 49669683496 [ 54.824230][ T2000] get_page_from_freelist+0x166f/0x2910 [ 54.829753][ T2000] __alloc_pages+0x2b3/0x590 [ 54.834350][ T2000] allocate_slab+0x2eb/0x430 [ 54.838907][ T2000] ___slab_alloc+0xb1c/0xf80 [ 54.843455][ T2000] __kmalloc+0x2da/0x2f0 [ 54.847655][ T2000] __register_sysctl_table+0xfd/0x1190 [ 54.853072][ T2000] unix_sysctl_register+0xb7/0x130 [ 54.858175][ T2000] unix_net_init+0x3c/0xc0 [ 54.862560][ T2000] ops_init+0x9a/0x4a0 [ 54.866615][ T2000] setup_net+0x36f/0x8a0 [ 54.870822][ T2000] copy_net_ns+0x296/0x5b0 [ 54.875208][ T2000] create_new_namespaces+0x35a/0x920 [ 54.880562][ T2000] unshare_nsproxy_namespaces+0x86/0x1a0 [ 54.886212][ T2000] ksys_unshare+0x309/0x6b0 [ 54.890677][ T2000] __x64_sys_unshare+0x28/0x40 [ 54.895405][ T2000] do_syscall_64+0x33/0x80 [ 54.899793][ T2000] page last free stack trace: [ 54.904427][ T2000] free_pcp_prepare+0x34e/0x730 [ 54.909264][ T2000] free_unref_page_list+0x168/0x9a0 [ 54.914428][ T2000] release_pages+0x9f2/0x1100 [ 54.919067][ T2000] tlb_finish_mmu+0x125/0x6c0 [ 54.923706][ T2000] exit_mmap+0x185/0x4e0 [ 54.927921][ T2000] mmput+0x90/0x390 [ 54.931688][ T2000] do_exit+0x87f/0x21d0 [ 54.935815][ T2000] do_group_exit+0xe7/0x290 [ 54.940313][ T2000] get_signal+0x274/0x1ec0 [ 54.944700][ T2000] arch_do_signal_or_restart+0x2b8/0x1780 [ 54.950387][ T2000] exit_to_user_mode_prepare+0xf2/0x160 [ 54.955894][ T2000] syscall_exit_to_user_mode+0x12/0x30 [ 54.961315][ T2000] do_syscall_64+0x40/0x80 [ 54.965782][ T2000] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 54.971638][ T2000] [ 54.974015][ T2000] Memory state around the buggy address: [ 54.979612][ T2000] ffff8881209c9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 54.987722][ T2000] ffff8881209c9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 54.995740][ T2000] >ffff8881209ca000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.003757][ T2000] ^ [ 55.007783][ T2000] ffff8881209ca080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 55.015799][ T2000] ffff8881209ca100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 55.023822][ T2000] ================================================================== [ 55.031842][ T2000] Disabling lock debugging due to kernel taint [ 55.038025][ T2000] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 55.045375][ T2000] Kernel Offset: disabled [ 55.049677][ T2000] Rebooting in 86400 seconds..