no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 25.961932][ T1057] cgroup: Unknown subsys name 'net' [ 26.085721][ T1057] cgroup: Unknown subsys name 'rlimit' [ 30.080502][ T1403] modprobe (1403) used greatest stack depth: 22720 bytes left [ 30.892219][ T1062] syz-executor.0 (1062) used greatest stack depth: 20680 bytes left Warning: Permanently added '10.128.0.81' (ED25519) to the list of known hosts. 2024/06/27 11:23:16 ignoring optional flag "sandboxArg"="0" 2024/06/27 11:23:17 parsed 1 programs 2024/06/27 11:23:17 executed programs: 0 [ 53.930710][ T1909] loop0: detected capacity change from 0 to 2048 [ 53.938601][ T1909] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 53.950114][ T1909] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 53.961191][ T1909] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 53.972104][ T1909] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 53.980030][ T1909] UDF-fs: Scanning with blocksize 512 failed [ 53.988305][ T1909] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 54.050937][ T1498] ================================================================== [ 54.059090][ T1498] BUG: KASAN: use-after-free in crc_itu_t+0x178/0x240 [ 54.065841][ T1498] Read of size 1 at addr ffff88806e59d000 by task syz-executor.0/1498 [ 54.073970][ T1498] [ 54.076332][ T1498] CPU: 1 PID: 1498 Comm: syz-executor.0 Not tainted 6.1.95-syzkaller #0 [ 54.084714][ T1498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 54.094855][ T1498] Call Trace: [ 54.098123][ T1498] [ 54.101032][ T1498] dump_stack_lvl+0xf4/0x251 [ 54.105604][ T1498] ? nf_tcp_handle_invalid+0x2f3/0x2f3 [ 54.111211][ T1498] ? panic+0x3fe/0x3fe [ 54.115336][ T1498] ? lock_acquire+0xbe/0x390 [ 54.119896][ T1498] ? read_lock_is_recursive+0x10/0x10 [ 54.125326][ T1498] ? __virt_addr_valid+0x139/0x260 [ 54.130511][ T1498] ? __virt_addr_valid+0x211/0x260 [ 54.135784][ T1498] print_report+0x15f/0x4f0 [ 54.140282][ T1498] ? __virt_addr_valid+0x139/0x260 [ 54.145551][ T1498] ? __virt_addr_valid+0x211/0x260 [ 54.150905][ T1498] ? crc_itu_t+0x178/0x240 [ 54.155430][ T1498] kasan_report+0x136/0x160 [ 54.159920][ T1498] ? crc_itu_t+0x178/0x240 [ 54.164313][ T1498] crc_itu_t+0x178/0x240 [ 54.168533][ T1498] udf_sync_fs+0x1bd/0x370 [ 54.172917][ T1498] ? udf_put_super+0x130/0x130 [ 54.177659][ T1498] ? dentry_kill+0xbb/0x1e0 [ 54.182306][ T1498] sync_filesystem+0xbf/0x180 [ 54.186954][ T1498] generic_shutdown_super+0x65/0x2c0 [ 54.192294][ T1498] kill_block_super+0x75/0xb0 [ 54.197028][ T1498] deactivate_locked_super+0x71/0xd0 [ 54.202427][ T1498] cleanup_mnt+0x2bd/0x330 [ 54.206948][ T1498] task_work_run+0x206/0x280 [ 54.211559][ T1498] ? task_work_cancel+0x2a0/0x2a0 [ 54.216672][ T1498] ? __x64_sys_umount+0xe4/0x120 [ 54.221593][ T1498] ? path_umount+0xc70/0xc70 [ 54.226160][ T1498] exit_to_user_mode_loop+0xa9/0xc0 [ 54.231336][ T1498] exit_to_user_mode_prepare+0x64/0xb0 [ 54.236767][ T1498] syscall_exit_to_user_mode+0x27/0x1b0 [ 54.242287][ T1498] do_syscall_64+0x47/0x80 [ 54.246739][ T1498] ? clear_bhb_loop+0x45/0xa0 [ 54.251393][ T1498] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 54.257739][ T1498] RIP: 0033:0x7f553e07dc87 [ 54.262133][ T1498] Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 b0 ff ff ff f7 d8 64 89 02 b8 [ 54.281884][ T1498] RSP: 002b:00007ffdcdb2a0d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 54.290270][ T1498] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f553e07dc87 [ 54.298397][ T1498] RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffdcdb2a190 [ 54.306343][ T1498] RBP: 00007ffdcdb2a190 R08: 0000000000000000 R09: 0000000000000000 [ 54.314286][ T1498] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdcdb2b250 [ 54.322237][ T1498] R13: 00007f553e0d7c5a R14: 000000000000d286 R15: 0000000000000006 [ 54.330185][ T1498] [ 54.333194][ T1498] [ 54.335666][ T1498] The buggy address belongs to the physical page: [ 54.342057][ T1498] page:ffffea0001b96740 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6e59d [ 54.352262][ T1498] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 54.359341][ T1498] raw: 00fff00000000000 ffffea0001b96788 ffffea0001b92448 0000000000000000 [ 54.367895][ T1498] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 54.376448][ T1498] page dumped because: kasan: bad access detected [ 54.382844][ T1498] page_owner tracks the page as freed [ 54.388198][ T1498] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 1908, tgid 1908 (syz-executor.0), ts 53999292820, free_ts 54030085170 [ 54.406998][ T1498] post_alloc_hook+0x286/0x2b0 [ 54.411736][ T1498] get_page_from_freelist+0x2fdd/0x3170 [ 54.417249][ T1498] __alloc_pages+0x251/0x640 [ 54.421805][ T1498] __folio_alloc+0xf/0x30 [ 54.426103][ T1498] vma_alloc_folio+0x484/0x9e0 [ 54.430834][ T1498] handle_mm_fault+0x232f/0x4260 [ 54.435739][ T1498] exc_page_fault+0x22a/0x5a0 [ 54.440383][ T1498] asm_exc_page_fault+0x22/0x30 [ 54.445201][ T1498] page last free stack trace: [ 54.449876][ T1498] free_unref_page_prepare+0xd4b/0xee0 [ 54.455335][ T1498] free_unref_page_list+0x54b/0x7e0 [ 54.460505][ T1498] release_pages+0x175c/0x1900 [ 54.465283][ T1498] tlb_flush_mmu+0xe5/0x1d0 [ 54.469756][ T1498] unmap_page_range+0x1408/0x1770 [ 54.474839][ T1498] unmap_vmas+0x42a/0x5a0 [ 54.479137][ T1498] exit_mmap+0x22d/0x730 [ 54.483350][ T1498] __mmput+0x9b/0x2d0 [ 54.487310][ T1498] exit_mm+0x122/0x1b0 [ 54.491447][ T1498] do_exit+0x81e/0x23a0 [ 54.495579][ T1498] do_group_exit+0x1b5/0x280 [ 54.500150][ T1498] get_signal+0x1117/0x1260 [ 54.504632][ T1498] arch_do_signal_or_restart+0xb3/0x1240 [ 54.510258][ T1498] exit_to_user_mode_loop+0x61/0xc0 [ 54.515447][ T1498] exit_to_user_mode_prepare+0x64/0xb0 [ 54.520880][ T1498] syscall_exit_to_user_mode+0x27/0x1b0 [ 54.526487][ T1498] [ 54.528784][ T1498] Memory state around the buggy address: [ 54.534560][ T1498] ffff88806e59cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 54.542591][ T1498] ffff88806e59cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 54.550622][ T1498] >ffff88806e59d000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 54.558679][ T1498] ^ [ 54.562807][ T1498] ffff88806e59d080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 54.570923][ T1498] ffff88806e59d100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 54.579212][ T1498] ================================================================== [ 54.587589][ T1498] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 54.595041][ T1498] Kernel Offset: disabled [ 54.599342][ T1498] Rebooting in 86400 seconds..