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 [ 35.031871][ T3214] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.043317][ T3214] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.163' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.985394][ T3543] loop0: detected capacity change from 0 to 2048 [ 60.992988][ T3543] ======================================================= [ 60.992988][ T3543] WARNING: The mand mount option has been deprecated and [ 60.992988][ T3543] and is ignored by this kernel. Remove the mand [ 60.992988][ T3543] option from the mount to silence this warning. [ 60.992988][ T3543] ======================================================= [ 61.031254][ T3543] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 61.043472][ T3543] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 61.063636][ T27] audit: type=1800 audit(1687087822.996:2): pid=3543 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor277" name="bus" dev="loop0" ino=1367 res=0 errno=0 [ 61.246569][ T3542] ================================================================== [ 61.254677][ T3542] BUG: KASAN: use-after-free in crc_itu_t+0x218/0x2a0 [ 61.261481][ T3542] Read of size 1 at addr ffff88806fdca000 by task syz-executor277/3542 [ 61.269711][ T3542] [ 61.272027][ T3542] CPU: 0 PID: 3542 Comm: syz-executor277 Not tainted 6.1.34-syzkaller #0 [ 61.280455][ T3542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 61.290773][ T3542] Call Trace: [ 61.294045][ T3542] [ 61.296968][ T3542] dump_stack_lvl+0x1e3/0x2cb [ 61.301662][ T3542] ? irq_work_queue+0xc6/0x150 [ 61.306431][ T3542] ? nf_tcp_handle_invalid+0x642/0x642 [ 61.311985][ T3542] ? panic+0x75d/0x75d [ 61.316065][ T3542] ? _printk+0xd1/0x111 [ 61.320227][ T3542] ? _raw_spin_lock_irqsave+0xac/0x120 [ 61.325688][ T3542] print_report+0x15f/0x4f0 [ 61.330206][ T3542] ? time64_to_tm+0x32d/0x4d0 [ 61.334889][ T3542] ? __virt_addr_valid+0x22b/0x2e0 [ 61.340017][ T3542] ? __phys_addr+0xb6/0x170 [ 61.344528][ T3542] ? crc_itu_t+0x218/0x2a0 [ 61.348951][ T3542] kasan_report+0x136/0x160 [ 61.353482][ T3542] ? crc_itu_t+0x218/0x2a0 [ 61.357916][ T3542] crc_itu_t+0x218/0x2a0 [ 61.362175][ T3542] udf_sync_fs+0x1ce/0x380 [ 61.366602][ T3542] ? udf_put_super+0x160/0x160 [ 61.371372][ T3542] ? get_nr_dirty_inodes+0x2ab/0x2e0 [ 61.376665][ T3542] sync_filesystem+0xe8/0x220 [ 61.381349][ T3542] generic_shutdown_super+0x6b/0x340 [ 61.386638][ T3542] kill_block_super+0x7a/0xe0 [ 61.391321][ T3542] deactivate_locked_super+0xa0/0x110 [ 61.396875][ T3542] cleanup_mnt+0x490/0x520 [ 61.401305][ T3542] ? lockdep_hardirqs_on+0x94/0x130 [ 61.406523][ T3542] task_work_run+0x246/0x300 [ 61.411123][ T3542] ? task_work_cancel+0x2b0/0x2b0 [ 61.416164][ T3542] ? exit_to_user_mode_loop+0x39/0x100 [ 61.421630][ T3542] exit_to_user_mode_loop+0xd9/0x100 [ 61.427004][ T3542] exit_to_user_mode_prepare+0xb1/0x140 [ 61.432554][ T3542] syscall_exit_to_user_mode+0x60/0x270 [ 61.438101][ T3542] do_syscall_64+0x49/0xb0 [ 61.442520][ T3542] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.448416][ T3542] RIP: 0033:0x7ff83ef6d177 [ 61.452833][ T3542] 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 [ 61.472451][ T3542] RSP: 002b:00007fffe9a06ad8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 61.480871][ T3542] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff83ef6d177 [ 61.488845][ T3542] RDX: 00007fffe9a06b99 RSI: 000000000000000a RDI: 00007fffe9a06b90 [ 61.496828][ T3542] RBP: 00007fffe9a06b90 R08: 00000000ffffffff R09: 00007fffe9a06970 [ 61.504802][ T3542] R10: 0000555557067683 R11: 0000000000000206 R12: 00007fffe9a07c00 [ 61.512778][ T3542] R13: 00005555570675f0 R14: 00007fffe9a06b00 R15: 0000000000000001 [ 61.520756][ T3542] [ 61.523792][ T3542] [ 61.526118][ T3542] The buggy address belongs to the physical page: [ 61.532604][ T3542] page:ffffea0001bf7280 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6fdca [ 61.542752][ T3542] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 61.549869][ T3542] raw: 00fff00000000000 ffffea0001bf72c8 ffffea0001c1dec8 0000000000000000 [ 61.558455][ T3542] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 61.567031][ T3542] page dumped because: kasan: bad access detected [ 61.573439][ T3542] page_owner tracks the page as freed [ 61.578798][ T3542] page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 3534, tgid 3534 (sshd), ts 53823096621, free_ts 53888333213 [ 61.596769][ T3542] post_alloc_hook+0x18d/0x1b0 [ 61.601543][ T3542] get_page_from_freelist+0x32ed/0x3480 [ 61.607111][ T3542] __alloc_pages+0x28d/0x770 [ 61.611699][ T3542] __folio_alloc+0xf/0x30 [ 61.616023][ T3542] vma_alloc_folio+0x486/0x990 [ 61.620799][ T3542] handle_mm_fault+0x2e85/0x5330 [ 61.625736][ T3542] exc_page_fault+0x58d/0x790 [ 61.630420][ T3542] asm_exc_page_fault+0x22/0x30 [ 61.635272][ T3542] page last free stack trace: [ 61.639933][ T3542] free_unref_page_prepare+0xf63/0x1120 [ 61.645486][ T3542] free_unref_page_list+0x107/0x810 [ 61.650708][ T3542] release_pages+0x2836/0x2b40 [ 61.655478][ T3542] tlb_flush_mmu+0xfc/0x210 [ 61.660086][ T3542] tlb_finish_mmu+0xce/0x1f0 [ 61.664692][ T3542] unmap_region+0x29f/0x2f0 [ 61.669222][ T3542] do_mas_align_munmap+0xe98/0x15e0 [ 61.674427][ T3542] do_mas_munmap+0x246/0x2b0 [ 61.679018][ T3542] __vm_munmap+0x268/0x370 [ 61.683440][ T3542] __x64_sys_munmap+0x5c/0x70 [ 61.688117][ T3542] do_syscall_64+0x3d/0xb0 [ 61.692538][ T3542] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.698435][ T3542] [ 61.700758][ T3542] Memory state around the buggy address: [ 61.706379][ T3542] ffff88806fdc9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.714436][ T3542] ffff88806fdc9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.722503][ T3542] >ffff88806fdca000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 61.730562][ T3542] ^ [ 61.734632][ T3542] ffff88806fdca080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 61.742696][ T3542] ffff88806fdca100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 61.750758][ T3542] ================================================================== [ 61.759319][ T3542] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 61.766543][ T3542] CPU: 1 PID: 3542 Comm: syz-executor277 Not tainted 6.1.34-syzkaller #0 [ 61.774971][ T3542] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 61.785027][ T3542] Call Trace: [ 61.788308][ T3542] [ 61.791321][ T3542] dump_stack_lvl+0x1e3/0x2cb [ 61.796006][ T3542] ? nf_tcp_handle_invalid+0x642/0x642 [ 61.801465][ T3542] ? panic+0x75d/0x75d [ 61.805535][ T3542] ? preempt_schedule_common+0xa6/0xd0 [ 61.810999][ T3542] ? vscnprintf+0x59/0x80 [ 61.815326][ T3542] panic+0x318/0x75d [ 61.819239][ T3542] ? check_panic_on_warn+0x1d/0xa0 [ 61.824363][ T3542] ? memcpy_page_flushcache+0xfc/0xfc [ 61.829745][ T3542] ? _raw_spin_unlock_irqrestore+0x128/0x130 [ 61.835725][ T3542] ? _raw_spin_unlock+0x40/0x40 [ 61.840582][ T3542] ? print_report+0x4a3/0x4f0 [ 61.845275][ T3542] check_panic_on_warn+0x7e/0xa0 [ 61.850227][ T3542] ? crc_itu_t+0x218/0x2a0 [ 61.854654][ T3542] end_report+0x66/0x110 [ 61.858896][ T3542] kasan_report+0x143/0x160 [ 61.863411][ T3542] ? crc_itu_t+0x218/0x2a0 [ 61.867863][ T3542] crc_itu_t+0x218/0x2a0 [ 61.872112][ T3542] udf_sync_fs+0x1ce/0x380 [ 61.876556][ T3542] ? udf_put_super+0x160/0x160 [ 61.881322][ T3542] ? get_nr_dirty_inodes+0x2ab/0x2e0 [ 61.886611][ T3542] sync_filesystem+0xe8/0x220 [ 61.891440][ T3542] generic_shutdown_super+0x6b/0x340 [ 61.896723][ T3542] kill_block_super+0x7a/0xe0 [ 61.901400][ T3542] deactivate_locked_super+0xa0/0x110 [ 61.906771][ T3542] cleanup_mnt+0x490/0x520 [ 61.911203][ T3542] ? lockdep_hardirqs_on+0x94/0x130 [ 61.916414][ T3542] task_work_run+0x246/0x300 [ 61.921009][ T3542] ? task_work_cancel+0x2b0/0x2b0 [ 61.926041][ T3542] ? exit_to_user_mode_loop+0x39/0x100 [ 61.931602][ T3542] exit_to_user_mode_loop+0xd9/0x100 [ 61.936892][ T3542] exit_to_user_mode_prepare+0xb1/0x140 [ 61.942439][ T3542] syscall_exit_to_user_mode+0x60/0x270 [ 61.947983][ T3542] do_syscall_64+0x49/0xb0 [ 61.952401][ T3542] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.958302][ T3542] RIP: 0033:0x7ff83ef6d177 [ 61.962720][ T3542] 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 [ 61.982344][ T3542] RSP: 002b:00007fffe9a06ad8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 61.990760][ T3542] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff83ef6d177 [ 61.998732][ T3542] RDX: 00007fffe9a06b99 RSI: 000000000000000a RDI: 00007fffe9a06b90 [ 62.006699][ T3542] RBP: 00007fffe9a06b90 R08: 00000000ffffffff R09: 00007fffe9a06970 [ 62.014681][ T3542] R10: 0000555557067683 R11: 0000000000000206 R12: 00007fffe9a07c00 [ 62.022647][ T3542] R13: 00005555570675f0 R14: 00007fffe9a06b00 R15: 0000000000000001 [ 62.030619][ T3542] [ 62.033888][ T3542] Kernel Offset: disabled [ 62.038250][ T3542] Rebooting in 86400 seconds..