[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.180558] erofs: read_super, device -> /dev/loop0 [ 36.185683] erofs: options -> [ 36.191168] erofs: root inode @ nid 36 [ 36.195476] erofs: mounted on /dev/loop0 with opts: . [ 36.209229] ------------[ cut here ]------------ [ 36.214008] kernel BUG at drivers/staging/erofs/xattr.c:224! [ 36.219920] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 36.225295] CPU: 1 PID: 8104 Comm: syz-executor359 Not tainted 4.19.211-syzkaller #0 [ 36.233162] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.242506] RIP: 0010:xattr_foreach+0x1377/0x1900 [ 36.247329] Code: 3c 03 6b 1c 03 6c 24 38 44 29 e5 89 6b 1c e9 fb f7 ff ff e8 bb ec 27 fb 4c 89 ef e8 b3 11 47 fb e9 47 fd ff ff e8 a9 ec 27 fb <0f> 0b e8 a2 ec 27 fb 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 [ 36.266209] RSP: 0018:ffff8880b06779a0 EFLAGS: 00010293 [ 36.271549] RAX: ffff8880b3c76000 RBX: ffff8880b0677b20 RCX: ffffffff863a8701 [ 36.278796] RDX: 0000000000000000 RSI: ffffffff863a98c7 RDI: 0000000000000004 [ 36.286042] RBP: ffff8880b0677b10 R08: 0000000000000000 R09: 00000000000045bc [ 36.293304] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000009a98 [ 36.300553] R13: 00000000000045bc R14: ffff8880b0677b28 R15: ffff8880b0677b3c [ 36.307803] FS: 0000555556e0d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.316005] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.321865] CR2: 000055f059d79208 CR3: 00000000aacfb000 CR4: 00000000003406e0 [ 36.329133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.336394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.343645] Call Trace: [ 36.346215] ? erofs_get_meta_page+0x6f2/0xcd0 [ 36.350777] ? inline_xattr_iter_begin+0x4a0/0x4a0 [ 36.355698] ? preempt_count_add+0xaf/0x190 [ 36.360016] ? inline_xattr_iter_begin+0x393/0x4a0 [ 36.364922] ? __kasan_slab_free+0x186/0x1f0 [ 36.369309] erofs_getxattr+0x19e/0xf10 [ 36.373285] ? unlazy_walk+0x1a4/0x540 [ 36.377155] ? init_inode_xattrs.part.0+0x1070/0x1070 [ 36.382325] ? debug_check_no_obj_freed+0xb5/0x490 [ 36.387235] erofs_xattr_generic_get+0xf6/0x1e0 [ 36.391880] ? erofs_getxattr+0xf10/0xf10 [ 36.396005] vfs_getxattr+0x1ce/0x320 [ 36.399790] ? xattr_list_one+0x120/0x120 [ 36.403916] ? strncpy_from_user+0x2a2/0x350 [ 36.408305] getxattr+0xf4/0x2b0 [ 36.411652] ? vfs_getxattr+0x320/0x320 [ 36.415607] ? __phys_addr_symbol+0x2c/0x70 [ 36.419907] ? __check_object_size+0x17b/0x3e0 [ 36.424471] ? getname_flags+0x25b/0x590 [ 36.428513] path_getxattr+0xb6/0x150 [ 36.432293] ? __se_sys_fgetxattr+0x160/0x160 [ 36.436787] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.441786] ? do_syscall_64+0x21/0x620 [ 36.445740] do_syscall_64+0xf9/0x620 [ 36.449535] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.454717] RIP: 0033:0x7f0b1ba0ae39 [ 36.458409] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.477305] RSP: 002b:00007ffc7f2e87f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bf [ 36.484993] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f0b1ba0ae39 [ 36.492242] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000140 [ 36.499489] RBP: 00007f0b1b9ca6d0 R08: 0000000000000000 R09: 0000000000000000 [ 36.506738] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0b1b9ca760 [ 36.514000] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 36.521249] Modules linked in: [ 36.524538] ---[ end trace 1e11ca27f91ce9f9 ]--- [ 36.529351] RIP: 0010:xattr_foreach+0x1377/0x1900 [ 36.534228] Code: 3c 03 6b 1c 03 6c 24 38 44 29 e5 89 6b 1c e9 fb f7 ff ff e8 bb ec 27 fb 4c 89 ef e8 b3 11 47 fb e9 47 fd ff ff e8 a9 ec 27 fb <0f> 0b e8 a2 ec 27 fb 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 [ 36.553259] RSP: 0018:ffff8880b06779a0 EFLAGS: 00010293 [ 36.558672] RAX: ffff8880b3c76000 RBX: ffff8880b0677b20 RCX: ffffffff863a8701 [ 36.565946] RDX: 0000000000000000 RSI: ffffffff863a98c7 RDI: 0000000000000004 [ 36.573238] RBP: ffff8880b0677b10 R08: 0000000000000000 R09: 00000000000045bc [ 36.580554] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000009a98 [ 36.587820] R13: 00000000000045bc R14: ffff8880b0677b28 R15: ffff8880b0677b3c [ 36.595125] FS: 0000555556e0d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.603398] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.609307] CR2: 000055f059d79208 CR3: 00000000aacfb000 CR4: 00000000003406e0 [ 36.616678] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.623964] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.631312] Kernel panic - not syncing: Fatal exception [ 36.636835] Kernel Offset: disabled [ 36.640446] Rebooting in 86400 seconds..