DUID 00:04:4b:a6:d8:97:08:21:27:2e:fd:cf:3e:39:f6:c0:7f:1f forked to background, child pid 3213 [ 27.712581][ T3214] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.724995][ T3214] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.486627][ T3539] loop0: detected capacity change from 0 to 2048 [ 57.496880][ T3539] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.508185][ T3539] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.519294][ T3539] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.530038][ T3539] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 57.537867][ T3539] UDF-fs: Scanning with blocksize 512 failed [ 57.546377][ T3539] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) executing program [ 57.711027][ T3541] loop0: detected capacity change from 0 to 2048 [ 57.719630][ T3541] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.731379][ T3541] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.744507][ T3541] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.755431][ T3541] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 57.763190][ T3541] UDF-fs: Scanning with blocksize 512 failed [ 57.771936][ T3541] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) executing program [ 57.914061][ T3542] loop0: detected capacity change from 0 to 2048 [ 57.928208][ T3542] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.939985][ T3542] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.951750][ T3542] UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 [ 57.962782][ T3542] UDF-fs: warning (device loop0): udf_load_vrs: No anchor found [ 57.970768][ T3542] UDF-fs: Scanning with blocksize 512 failed [ 57.980219][ T3542] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 58.083147][ T3538] ================================================================== [ 58.091250][ T3538] BUG: KASAN: use-after-free in crc_itu_t+0x218/0x2a0 [ 58.098027][ T3538] Read of size 1 at addr ffff888074717000 by task syz-executor546/3538 [ 58.106610][ T3538] [ 58.108934][ T3538] CPU: 0 PID: 3538 Comm: syz-executor546 Not tainted 6.1.34-syzkaller #0 [ 58.117419][ T3538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 58.127469][ T3538] Call Trace: [ 58.130732][ T3538] [ 58.133643][ T3538] dump_stack_lvl+0x1e3/0x2cb [ 58.138335][ T3538] ? irq_work_queue+0xc6/0x150 [ 58.143104][ T3538] ? nf_tcp_handle_invalid+0x642/0x642 [ 58.148559][ T3538] ? panic+0x75d/0x75d [ 58.152631][ T3538] ? _printk+0xd1/0x111 [ 58.156950][ T3538] ? _raw_spin_lock_irqsave+0xac/0x120 [ 58.162485][ T3538] print_report+0x15f/0x4f0 [ 58.166983][ T3538] ? time64_to_tm+0x32d/0x4d0 [ 58.171658][ T3538] ? __virt_addr_valid+0x22b/0x2e0 [ 58.176758][ T3538] ? __phys_addr+0xb6/0x170 [ 58.181423][ T3538] ? crc_itu_t+0x218/0x2a0 [ 58.185836][ T3538] kasan_report+0x136/0x160 [ 58.190333][ T3538] ? crc_itu_t+0x218/0x2a0 [ 58.194738][ T3538] crc_itu_t+0x218/0x2a0 [ 58.198973][ T3538] udf_sync_fs+0x1ce/0x380 [ 58.203379][ T3538] ? udf_put_super+0x160/0x160 [ 58.208135][ T3538] ? get_nr_dirty_inodes+0x2ab/0x2e0 [ 58.213412][ T3538] sync_filesystem+0xe8/0x220 [ 58.218074][ T3538] generic_shutdown_super+0x6b/0x340 [ 58.223435][ T3538] kill_block_super+0x7a/0xe0 [ 58.228097][ T3538] deactivate_locked_super+0xa0/0x110 [ 58.233471][ T3538] cleanup_mnt+0x490/0x520 [ 58.237961][ T3538] ? lockdep_hardirqs_on+0x94/0x130 [ 58.243157][ T3538] task_work_run+0x246/0x300 [ 58.247736][ T3538] ? task_work_cancel+0x2b0/0x2b0 [ 58.252750][ T3538] ? exit_to_user_mode_loop+0x39/0x100 [ 58.258206][ T3538] exit_to_user_mode_loop+0xd9/0x100 [ 58.263476][ T3538] exit_to_user_mode_prepare+0xb1/0x140 [ 58.269007][ T3538] syscall_exit_to_user_mode+0x60/0x270 [ 58.274537][ T3538] do_syscall_64+0x49/0xb0 [ 58.278982][ T3538] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.284864][ T3538] RIP: 0033:0x7f9626fd7027 [ 58.289264][ T3538] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 58.308854][ T3538] RSP: 002b:00007ffd153f3a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 58.317443][ T3538] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9626fd7027 [ 58.325399][ T3538] RDX: 00007ffd153f3b49 RSI: 000000000000000a RDI: 00007ffd153f3b40 [ 58.333353][ T3538] RBP: 00007ffd153f3b40 R08: 00000000ffffffff R09: 00007ffd153f3920 [ 58.341310][ T3538] R10: 00005555567a7653 R11: 0000000000000206 R12: 00007ffd153f4bb0 [ 58.349265][ T3538] R13: 00005555567a75f0 R14: 00007ffd153f3ab0 R15: 0000000000000003 [ 58.357224][ T3538] [ 58.360229][ T3538] [ 58.362540][ T3538] The buggy address belongs to the physical page: [ 58.368930][ T3538] page:ffffea0001d1c5c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x74717 [ 58.379148][ T3538] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 58.386270][ T3538] raw: 00fff00000000000 ffffea0001c4cbc8 ffffea0001d1d188 0000000000000000 [ 58.394837][ T3538] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 58.403397][ T3538] page dumped because: kasan: bad access detected [ 58.409787][ T3538] page_owner tracks the page as freed [ 58.415141][ T3538] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 3542, tgid 3542 (syz-executor546), ts 58005548939, free_ts 58020410337 [ 58.434050][ T3538] post_alloc_hook+0x18d/0x1b0 [ 58.438806][ T3538] get_page_from_freelist+0x32ed/0x3480 [ 58.444345][ T3538] __alloc_pages+0x28d/0x770 [ 58.448914][ T3538] __folio_alloc+0xf/0x30 [ 58.453228][ T3538] vma_alloc_folio+0x486/0x990 [ 58.457991][ T3538] handle_mm_fault+0x2e85/0x5330 [ 58.463096][ T3538] exc_page_fault+0x58d/0x790 [ 58.467762][ T3538] asm_exc_page_fault+0x22/0x30 [ 58.472598][ T3538] page last free stack trace: [ 58.477440][ T3538] free_unref_page_prepare+0xf63/0x1120 [ 58.482975][ T3538] free_unref_page_list+0x107/0x810 [ 58.488335][ T3538] release_pages+0x2836/0x2b40 [ 58.493086][ T3538] tlb_flush_mmu+0xfc/0x210 [ 58.497582][ T3538] tlb_finish_mmu+0xce/0x1f0 [ 58.502162][ T3538] unmap_region+0x29f/0x2f0 [ 58.506652][ T3538] do_mas_align_munmap+0xe98/0x15e0 [ 58.511844][ T3538] do_mas_munmap+0x246/0x2b0 [ 58.516682][ T3538] __vm_munmap+0x268/0x370 [ 58.521084][ T3538] __x64_sys_munmap+0x5c/0x70 [ 58.525753][ T3538] do_syscall_64+0x3d/0xb0 [ 58.530242][ T3538] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.536119][ T3538] [ 58.538424][ T3538] Memory state around the buggy address: [ 58.544050][ T3538] ffff888074716f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 58.552098][ T3538] ffff888074716f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 58.560316][ T3538] >ffff888074717000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 58.568356][ T3538] ^ [ 58.572409][ T3538] ffff888074717080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 58.580449][ T3538] ffff888074717100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 58.588663][ T3538] ================================================================== [ 58.597062][ T3538] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 58.604345][ T3538] CPU: 1 PID: 3538 Comm: syz-executor546 Not tainted 6.1.34-syzkaller #0 [ 58.612753][ T3538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 58.622793][ T3538] Call Trace: [ 58.626068][ T3538] [ 58.629163][ T3538] dump_stack_lvl+0x1e3/0x2cb [ 58.633847][ T3538] ? nf_tcp_handle_invalid+0x642/0x642 [ 58.639302][ T3538] ? panic+0x75d/0x75d [ 58.643357][ T3538] ? preempt_schedule_common+0xa6/0xd0 [ 58.648813][ T3538] ? vscnprintf+0x59/0x80 [ 58.653140][ T3538] panic+0x318/0x75d [ 58.657027][ T3538] ? check_panic_on_warn+0x1d/0xa0 [ 58.662130][ T3538] ? memcpy_page_flushcache+0xfc/0xfc [ 58.667493][ T3538] ? _raw_spin_unlock_irqrestore+0x128/0x130 [ 58.673450][ T3538] ? _raw_spin_unlock+0x40/0x40 [ 58.678275][ T3538] ? print_report+0x4a3/0x4f0 [ 58.682942][ T3538] check_panic_on_warn+0x7e/0xa0 [ 58.687878][ T3538] ? crc_itu_t+0x218/0x2a0 [ 58.692273][ T3538] end_report+0x66/0x110 [ 58.696501][ T3538] kasan_report+0x143/0x160 [ 58.700989][ T3538] ? crc_itu_t+0x218/0x2a0 [ 58.705475][ T3538] crc_itu_t+0x218/0x2a0 [ 58.709704][ T3538] udf_sync_fs+0x1ce/0x380 [ 58.714102][ T3538] ? udf_put_super+0x160/0x160 [ 58.718850][ T3538] ? get_nr_dirty_inodes+0x2ab/0x2e0 [ 58.724206][ T3538] sync_filesystem+0xe8/0x220 [ 58.728867][ T3538] generic_shutdown_super+0x6b/0x340 [ 58.734135][ T3538] kill_block_super+0x7a/0xe0 [ 58.738791][ T3538] deactivate_locked_super+0xa0/0x110 [ 58.744142][ T3538] cleanup_mnt+0x490/0x520 [ 58.748544][ T3538] ? lockdep_hardirqs_on+0x94/0x130 [ 58.753731][ T3538] task_work_run+0x246/0x300 [ 58.758304][ T3538] ? task_work_cancel+0x2b0/0x2b0 [ 58.763307][ T3538] ? exit_to_user_mode_loop+0x39/0x100 [ 58.769093][ T3538] exit_to_user_mode_loop+0xd9/0x100 [ 58.774442][ T3538] exit_to_user_mode_prepare+0xb1/0x140 [ 58.779970][ T3538] syscall_exit_to_user_mode+0x60/0x270 [ 58.785492][ T3538] do_syscall_64+0x49/0xb0 [ 58.790061][ T3538] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.795936][ T3538] RIP: 0033:0x7f9626fd7027 [ 58.800345][ T3538] Code: 09 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 58.820028][ T3538] RSP: 002b:00007ffd153f3a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 58.828421][ T3538] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9626fd7027 [ 58.836369][ T3538] RDX: 00007ffd153f3b49 RSI: 000000000000000a RDI: 00007ffd153f3b40 [ 58.844322][ T3538] RBP: 00007ffd153f3b40 R08: 00000000ffffffff R09: 00007ffd153f3920 [ 58.852281][ T3538] R10: 00005555567a7653 R11: 0000000000000206 R12: 00007ffd153f4bb0 [ 58.860233][ T3538] R13: 00005555567a75f0 R14: 00007ffd153f3ab0 R15: 0000000000000003 [ 58.868188][ T3538] [ 58.871248][ T3538] Kernel Offset: disabled [ 58.875558][ T3538] Rebooting in 86400 seconds..