[ 28.385750] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 28.393329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.401609] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 28.410687] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 28.418346] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.518523] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 28.967198] can: request_module (can-proto-0) failed. [ 28.975915] can: request_module (can-proto-0) failed. [ 28.985317] can: request_module (can-proto-0) failed. [ 38.860401] unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Warning: Permanently added '10.128.1.111' (ECDSA) to the list of known hosts. [ 46.494813] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) [ 46.527817] ================================================================== [ 46.535469] BUG: KASAN: slab-out-of-bounds in udf_get_fileident+0x1d1/0x1f0 [ 46.542648] Read of size 2 at addr ffff8880aa421f3c by task syz-executor859/8307 [ 46.550368] [ 46.552065] CPU: 0 PID: 8307 Comm: syz-executor859 Not tainted 4.14.275-syzkaller #0 [ 46.560031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.572080] Call Trace: [ 46.574805] dump_stack+0x14b/0x1e7 [ 46.578424] ? udf_get_fileident+0x1d1/0x1f0 [ 46.583088] print_address_description.cold.6+0x9/0x1ca [ 46.588478] ? udf_get_fileident+0x1d1/0x1f0 [ 46.593038] kasan_report.cold.7+0x11a/0x2d3 [ 46.597520] __asan_report_load_n_noabort+0xf/0x20 [ 46.602458] udf_get_fileident+0x1d1/0x1f0 [ 46.606772] udf_fileident_read+0x4b8/0x1ae0 [ 46.611161] ? __lock_acquire+0x24d5/0x42d0 [ 46.615458] ? lock_downgrade+0x7f0/0x7f0 [ 46.619612] ? unwind_next_frame.part.6+0x1a3/0xa40 [ 46.624838] ? udf_get_fileident+0x1f0/0x1f0 [ 46.629397] ? udf_readdir+0x438/0x12b0 [ 46.633381] ? rcu_read_lock_sched_held+0x108/0x120 [ 46.638444] ? kmem_cache_alloc_trace+0x37c/0x3f0 [ 46.643796] udf_readdir+0x5ca/0x12b0 [ 46.647671] ? udf_new_block+0x450/0x450 [ 46.651823] ? _raw_spin_unlock_irq+0x60/0x90 [ 46.656470] ? finish_task_switch+0x172/0x650 [ 46.661228] ? finish_task_switch+0x149/0x650 [ 46.665826] ? __schedule+0x82c/0x1ee0 [ 46.670058] ? mark_held_locks+0xc7/0x130 [ 46.674190] ? trace_hardirqs_on_caller+0x3bb/0x570 [ 46.679299] ? retint_kernel+0x2d/0x2d [ 46.684458] ? lock_acquire+0x1f3/0x3e0 [ 46.688419] iterate_dir+0x188/0x660 [ 46.692113] ? iterate_dir+0x188/0x660 [ 46.695986] SyS_getdents64+0x10d/0x1c0 [ 46.700242] ? do_sys_open+0x16d/0x350 [ 46.704118] ? set_fs_root+0x1b0/0x1b0 [ 46.707990] ? SyS_getdents+0x1d0/0x1d0 [ 46.711952] ? filldir+0x440/0x440 [ 46.715479] ? do_syscall_64+0x4c/0x5b0 [ 46.719429] ? SyS_getdents+0x1d0/0x1d0 [ 46.723582] do_syscall_64+0x1c7/0x5b0 [ 46.727606] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.732452] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 46.737628] RIP: 0033:0x7f7193a43599 [ 46.741457] RSP: 002b:00007fff91f6fa58 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 [ 46.749140] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f7193a43599 [ 46.756629] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 46.763908] RBP: 00007f7193a02d90 R08: 0000000000000000 R09: 0000000000000000 [ 46.771169] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7193a02e20 [ 46.778515] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 46.786112] [ 46.788073] Allocated by task 4761: [ 46.792030] save_stack_trace+0x16/0x20 [ 46.796090] kasan_kmalloc.part.1+0x62/0xf0 [ 46.800474] kasan_kmalloc+0xaf/0xc0 [ 46.804173] kasan_slab_alloc+0x12/0x20 [ 46.808213] kmem_cache_alloc+0x12e/0x3e0 [ 46.812625] shmem_alloc_inode+0x15/0x30 [ 46.816673] alloc_inode+0x56/0x150 [ 46.820285] new_inode_pseudo+0xc/0xd0 [ 46.824236] new_inode+0x14/0x30 [ 46.827580] shmem_get_inode+0x6c/0x770 [ 46.831535] shmem_mknod+0x49/0x1a0 [ 46.835152] shmem_create+0x13/0x20 [ 46.838843] lookup_open+0x744/0x1c10 [ 46.842636] path_openat+0xe81/0x2760 [ 46.846521] do_filp_open+0x16b/0x220 [ 46.850322] do_sys_open+0x1d0/0x350 [ 46.854048] SyS_open+0x19/0x20 [ 46.857306] do_syscall_64+0x1c7/0x5b0 [ 46.861178] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 46.866859] [ 46.868558] Freed by task 0: [ 46.871739] (stack is not available) [ 46.875455] [ 46.877097] The buggy address belongs to the object at ffff8880aa421a70 [ 46.877097] which belongs to the cache shmem_inode_cache of size 1208 [ 46.890786] The buggy address is located 20 bytes to the right of [ 46.890786] 1208-byte region [ffff8880aa421a70, ffff8880aa421f28) [ 46.903257] The buggy address belongs to the page: [ 46.908268] page:ffffea0002a90840 count:1 mapcount:0 mapping:ffff8880aa421000 index:0xffff8880aa421ffd [ 46.917956] flags: 0xfff00000000100(slab) [ 46.922212] raw: 00fff00000000100 ffff8880aa421000 ffff8880aa421ffd 0000000100000003 [ 46.930579] raw: ffffea0002872fa0 ffffea000296b5a0 ffff8880b61616c0 0000000000000000 [ 46.938829] page dumped because: kasan: bad access detected [ 46.944900] [ 46.946507] Memory state around the buggy address: [ 46.951722] ffff8880aa421e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 46.959070] ffff8880aa421e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 46.966932] >ffff8880aa421f00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 46.974623] ^ [ 46.979974] ffff8880aa421f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 46.987323] ffff8880aa422000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 46.994694] ================================================================== [ 47.002123] Disabling lock debugging due to kernel taint [ 47.008164] Kernel panic - not syncing: panic_on_warn set ... [ 47.008164] [ 47.015611] CPU: 0 PID: 8307 Comm: syz-executor859 Tainted: G B 4.14.275-syzkaller #0 [ 47.024894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.035093] Call Trace: [ 47.037701] dump_stack+0x14b/0x1e7 [ 47.041558] ? udf_get_fileident+0x1d1/0x1f0 [ 47.045958] panic+0x1b0/0x358 [ 47.049408] ? add_taint.cold.4+0x11/0x11 [ 47.053642] ? ___preempt_schedule+0x16/0x18 [ 47.058133] ? udf_get_fileident+0x1d1/0x1f0 [ 47.062522] kasan_end_report+0x47/0x4f [ 47.066490] kasan_report.cold.7+0x76/0x2d3 [ 47.070795] __asan_report_load_n_noabort+0xf/0x20 [ 47.075703] udf_get_fileident+0x1d1/0x1f0 [ 47.079935] udf_fileident_read+0x4b8/0x1ae0 [ 47.084439] ? __lock_acquire+0x24d5/0x42d0 [ 47.088829] ? lock_downgrade+0x7f0/0x7f0 [ 47.093658] ? unwind_next_frame.part.6+0x1a3/0xa40 [ 47.099008] ? udf_get_fileident+0x1f0/0x1f0 [ 47.104117] ? udf_readdir+0x438/0x12b0 [ 47.108282] ? rcu_read_lock_sched_held+0x108/0x120 [ 47.113306] ? kmem_cache_alloc_trace+0x37c/0x3f0 [ 47.118147] udf_readdir+0x5ca/0x12b0 [ 47.121938] ? udf_new_block+0x450/0x450 [ 47.125992] ? _raw_spin_unlock_irq+0x60/0x90 [ 47.130478] ? finish_task_switch+0x172/0x650 [ 47.135152] ? finish_task_switch+0x149/0x650 [ 47.139642] ? __schedule+0x82c/0x1ee0 [ 47.143722] ? mark_held_locks+0xc7/0x130 [ 47.147851] ? trace_hardirqs_on_caller+0x3bb/0x570 [ 47.152865] ? retint_kernel+0x2d/0x2d [ 47.156737] ? lock_acquire+0x1f3/0x3e0 [ 47.160867] iterate_dir+0x188/0x660 [ 47.164725] ? iterate_dir+0x188/0x660 [ 47.168761] SyS_getdents64+0x10d/0x1c0 [ 47.172809] ? do_sys_open+0x16d/0x350 [ 47.176667] ? set_fs_root+0x1b0/0x1b0 [ 47.180654] ? SyS_getdents+0x1d0/0x1d0 [ 47.184603] ? filldir+0x440/0x440 [ 47.188136] ? do_syscall_64+0x4c/0x5b0 [ 47.192167] ? SyS_getdents+0x1d0/0x1d0 [ 47.196137] do_syscall_64+0x1c7/0x5b0 [ 47.200017] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.204954] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 47.210116] RIP: 0033:0x7f7193a43599 [ 47.213830] RSP: 002b:00007fff91f6fa58 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 [ 47.221629] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f7193a43599 [ 47.228979] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 47.236223] RBP: 00007f7193a02d90 R08: 0000000000000000 R09: 0000000000000000 [ 47.243556] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7193a02e20 [ 47.250911] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 47.258313] Kernel Offset: disabled [ 47.262028] Rebooting in 86400 seconds..