[ OK ] Started OpenBSD Secure Shell server. [ 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 '10.128.10.39' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 33.293918] BTRFS: device fsid fcb2096b-ad15-4c2d-a9a0-86564f36bcc3 devid 1 transid 7 /dev/loop0 [ 33.321493] BTRFS info (device loop0): disk space caching is enabled [ 33.329133] BTRFS info (device loop0): has skinny extents executing program [ 33.343092] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop3 [ 33.358399] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop5 [ 33.373638] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop4 executing program executing program [ 33.424839] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop3 [ 33.474609] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop1 executing program executing program executing program [ 33.513088] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop2 [ 33.533018] BTRFS error (device loop0): bad tree block start, want 5267456 have 0 [ 33.535711] BTRFS warning (device loop0): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop4 [ 33.545874] BTRFS warning (device loop0): failed to read root (objectid=7): -5 executing program executing program executing program [ 33.563165] BTRFS warning (device loop0): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop3 executing program executing program executing program executing program executing program executing program [ 33.651303] BTRFS warning (device loop0): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop1 [ 33.679643] BTRFS warning (device loop0): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop3 executing program executing program [ 33.713649] BTRFS warning (device loop0): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop2 [ 33.766067] BTRFS error (device loop0): open_ctree failed [ 33.806134] BTRFS info (device loop5): disk space caching is enabled [ 33.813392] BTRFS info (device loop5): has skinny extents [ 33.831988] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop4 [ 33.857360] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop4 [ 33.876957] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop1 [ 33.894392] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop3 executing program executing program executing program executing program [ 33.909929] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop1 executing program executing program executing program executing program [ 34.032625] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop3 executing program [ 34.071912] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop4 [ 34.093270] BTRFS error (device loop5): bad tree block start, want 5267456 have 0 [ 34.094568] BTRFS warning (device loop5): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop4 [ 34.114076] BTRFS warning (device loop5): failed to read root (objectid=7): -5 executing program executing program executing program executing program [ 34.161902] BTRFS warning (device loop5): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop1 [ 34.177426] BTRFS warning (device loop5): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop0 executing program executing program executing program executing program executing program executing program executing program executing program [ 34.203164] BTRFS warning (device loop5): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop1 [ 34.224024] BTRFS warning (device loop5): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop0 [ 34.244673] BTRFS error (device loop5): open_ctree failed [ 34.297018] BTRFS info (device loop3): disk space caching is enabled [ 34.306119] BTRFS info (device loop3): has skinny extents [ 34.332133] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop1 executing program executing program executing program [ 34.374439] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop2 [ 34.394789] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop5 [ 34.410631] BTRFS error (device loop3): bad tree block start, want 5267456 have 0 executing program executing program executing program executing program executing program [ 34.419072] BTRFS warning (device loop3): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop0 [ 34.433906] BTRFS warning (device loop3): failed to read root (objectid=7): -5 [ 34.454725] BTRFS warning (device loop3): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop4 executing program executing program executing program executing program executing program [ 34.502432] BTRFS warning (device loop3): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop2 [ 34.518998] BTRFS warning (device loop3): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop4 executing program executing program executing program executing program [ 34.583010] BTRFS warning (device loop3): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop0 [ 34.604770] BTRFS error (device loop3): open_ctree failed executing program executing program [ 34.632672] BTRFS: device fsid fcb2096b-ad15-4c2d-a9a0-86564f36bcc3 devid 0 transid 7 /dev/loop1 [ 34.654227] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop5 [ 34.672391] BTRFS error (device loop1): superblock checksum mismatch executing program executing program executing program executing program executing program [ 34.679263] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop5 [ 34.699955] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop2 [ 34.720208] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop4 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.735329] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop2 [ 34.751473] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop0 [ 34.832161] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop4 executing program executing program [ 34.889207] BTRFS error (device loop1): open_ctree failed executing program [ 34.934988] BTRFS error (device loop1): superblock checksum mismatch [ 34.948023] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop2 [ 34.964538] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop0 executing program executing program executing program executing program [ 34.979394] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop2 [ 35.009528] BTRFS error (device loop1): open_ctree failed [ 35.017793] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop0 executing program executing program executing program executing program executing program [ 35.037513] BTRFS error (device loop1): superblock checksum mismatch executing program executing program executing program executing program executing program executing program executing program [ 35.102443] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop3 [ 35.121143] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop3 executing program executing program executing program [ 35.152430] BTRFS error (device loop1): open_ctree failed [ 35.159994] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop0 [ 35.176784] BTRFS error (device loop1): superblock checksum mismatch executing program executing program executing program [ 35.271956] BTRFS error (device loop1): open_ctree failed executing program [ 35.406308] BTRFS error (device loop1): superblock checksum mismatch [ 35.414455] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop0 [ 35.428492] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop3 [ 35.534602] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop4 [ 35.574528] BTRFS error (device loop1): open_ctree failed executing program executing program [ 35.575152] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop3 [ 35.599731] BTRFS error (device loop1): superblock checksum mismatch [ 35.609069] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.623419] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop0 [ 35.638858] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop3 [ 35.655963] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop4 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.673604] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop0 [ 35.704442] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop2 executing program executing program executing program executing program [ 35.766660] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop1 new:/dev/loop3 executing program executing program executing program executing program executing program executing program [ 35.852410] BTRFS error (device loop1): open_ctree failed [ 35.880535] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop2 [ 35.894106] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.915791] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop1 [ 35.939656] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop3 executing program executing program executing program [ 36.000521] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop5 [ 36.036000] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop2 executing program executing program executing program [ 36.072380] BTRFS error (device loop4): open_ctree failed [ 36.111102] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.117767] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop3 [ 36.148938] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop0 executing program executing program [ 36.176165] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop5 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.218176] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop2 [ 36.253812] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop3 executing program executing program executing program [ 36.319220] BTRFS error (device loop4): open_ctree failed [ 36.345415] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop0 new:/dev/loop2 [ 36.359137] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program [ 36.403968] BTRFS error (device loop4): open_ctree failed executing program executing program executing program [ 36.474708] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop3 [ 36.488573] BTRFS error (device loop4): superblock checksum mismatch [ 36.507470] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop5 new:/dev/loop1 executing program executing program executing program executing program executing program executing program [ 36.527862] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop0 executing program executing program executing program [ 36.588422] BTRFS error (device loop4): open_ctree failed [ 36.597223] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop2 [ 36.620961] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.622655] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop3 [ 36.656327] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop5 executing program executing program executing program executing program executing program [ 36.713266] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:0 old:/dev/loop4 new:/dev/loop0 executing program [ 36.759016] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop2 executing program executing program executing program executing program executing program [ 36.820299] BTRFS error (device loop4): open_ctree failed [ 36.828613] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop3 new:/dev/loop5 [ 36.846365] BTRFS error (device loop4): superblock checksum mismatch executing program executing program [ 36.965533] BTRFS error (device loop4): open_ctree failed [ 36.972425] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop0 [ 36.991795] BTRFS info (device loop1): disk space caching is enabled [ 36.998676] BTRFS info (device loop1): has skinny extents executing program executing program executing program executing program executing program executing program [ 37.011349] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop5 [ 37.033891] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop3 [ 37.053142] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop4 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.095250] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop0 [ 37.119156] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop4 executing program executing program executing program executing program executing program [ 37.209994] BTRFS warning (device ): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop5 [ 37.224685] BTRFS error (device loop1): bad tree block start, want 5267456 have 0 [ 37.241529] BTRFS warning (device loop1): failed to read root (objectid=7): -5 [ 37.280777] BTRFS warning (device loop1): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop3 [ 37.307049] BTRFS warning (device loop1): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop5 executing program executing program [ 37.328200] BTRFS warning (device loop1): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop3 [ 37.341859] BTRFS error (device loop1): open_ctree failed [ 37.347692] BTRFS warning (device loop1): duplicate device fsid:devid for fcb2096b-ad15-4c2d-a9a0-86564f36bcc3:1 old:/dev/loop1 new:/dev/loop4 [ 37.366518] BTRFS info (device loop1): disk space caching is enabled [ 37.372581] ================================================================== executing program executing program executing program executing program [ 37.375160] BTRFS info (device loop1): has skinny extents [ 37.380507] BUG: KASAN: use-after-free in btrfs_printk+0x34f/0x3d0 [ 37.380518] Read of size 8 at addr ffff8880a56322a0 by task syz-executor733/8656 [ 37.380521] [ 37.380533] CPU: 0 PID: 8656 Comm: syz-executor733 Not tainted 4.19.154-syzkaller #0 [ 37.380540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.380544] Call Trace: [ 37.380559] dump_stack+0x1fc/0x2fe [ 37.380577] print_address_description.cold+0x54/0x219 executing program executing program executing program executing program executing program executing program executing program [ 37.380591] kasan_report_error.cold+0x8a/0x1c7 [ 37.380603] ? btrfs_printk+0x34f/0x3d0 [ 37.380614] __asan_report_load8_noabort+0x88/0x90 [ 37.380625] ? btrfs_printk+0x34f/0x3d0 [ 37.380636] btrfs_printk+0x34f/0x3d0 [ 37.380650] ? btrfs_show_devname.cold+0x18/0x18 [ 37.380661] ? mntput_no_expire+0x119/0xa30 [ 37.380679] ? __mutex_unlock_slowpath+0xea/0x610 [ 37.380695] ? check_preemption_disabled+0x41/0x280 [ 37.380715] device_list_add.cold+0x22e/0x320 [ 37.475137] ? btrfs_rm_dev_replace_free_srcdev+0x450/0x450 executing program executing program executing program executing program executing program executing program executing program executing program [ 37.480876] btrfs_scan_one_device+0x33f/0xd00 [ 37.485473] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 37.490589] ? debug_check_no_obj_freed+0x201/0x482 [ 37.495613] ? device_list_add+0xe50/0xe50 [ 37.499845] ? kfree+0x110/0x210 [ 37.503207] ? btrfs_mount_root+0x107a/0x1830 [ 37.507708] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.512288] btrfs_mount_root+0x9df/0x1830 [ 37.516531] ? btrfs_decode_error+0x70/0x70 [ 37.520864] ? __mutex_unlock_slowpath+0xea/0x610 [ 37.525716] ? check_preemption_disabled+0x41/0x280 executing program executing program executing program executing program executing program executing program executing program [ 37.530741] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 37.535777] ? pcpu_alloc+0xc9/0x1190 [ 37.539586] ? __lockdep_init_map+0x100/0x5a0 [ 37.544093] mount_fs+0xa3/0x30c [ 37.547461] vfs_kern_mount.part.0+0x68/0x470 [ 37.551957] ? kfree+0x110/0x210 [ 37.555339] vfs_kern_mount+0x3c/0x60 [ 37.559148] btrfs_mount+0x23a/0xa93 [ 37.562874] ? btrfs_show_options+0xfd0/0xfd0 [ 37.567378] ? __mutex_unlock_slowpath+0xea/0x610 [ 37.572237] ? check_preemption_disabled+0x41/0x280 [ 37.577258] ? rcu_read_lock_sched_held+0x16c/0x1d0 executing program executing program executing program executing program executing program executing program executing program [ 37.582273] ? pcpu_alloc+0xc9/0x1190 [ 37.586073] ? __lockdep_init_map+0x100/0x5a0 [ 37.590574] mount_fs+0xa3/0x30c [ 37.594067] vfs_kern_mount.part.0+0x68/0x470 [ 37.598564] do_mount+0x113c/0x2f10 [ 37.602188] ? cmp_ex_sort+0xc0/0xc0 [ 37.605891] ? __do_page_fault+0x180/0xd60 [ 37.610125] ? copy_mount_string+0x40/0x40 [ 37.614361] ? copy_mount_options+0x1cd/0x380 [ 37.618851] ? memset+0x20/0x40 [ 37.622128] ? copy_mount_options+0x26f/0x380 [ 37.626624] ksys_mount+0xcf/0x130 executing program executing program executing program executing program executing program executing program executing program [ 37.630181] __x64_sys_mount+0xba/0x150 [ 37.634411] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.638988] do_syscall_64+0xf9/0x620 [ 37.642788] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.647971] RIP: 0033:0x448c2a [ 37.651169] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd a2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 aa a2 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 37.670207] RSP: 002b:00007fff69132908 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 executing program executing program executing program executing program executing program executing program executing program [ 37.677909] RAX: ffffffffffffffda RBX: 00007fff69132960 RCX: 0000000000448c2a [ 37.685174] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff69132920 [ 37.692445] RBP: 00007fff69132920 R08: 00007fff69132960 R09: 0000000000000000 [ 37.699725] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000031 [ 37.707008] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 37.714395] [ 37.716025] Allocated by task 8594: [ 37.719659] __kmalloc_node+0x4c/0x70 [ 37.723463] kvmalloc_node+0xb4/0xf0 [ 37.727185] btrfs_mount_root+0x13f/0x1830 executing program executing program executing program executing program executing program executing program [ 37.731420] mount_fs+0xa3/0x30c [ 37.734774] vfs_kern_mount.part.0+0x68/0x470 [ 37.739267] vfs_kern_mount+0x3c/0x60 [ 37.743070] btrfs_mount+0x23a/0xa93 [ 37.746787] mount_fs+0xa3/0x30c [ 37.750152] vfs_kern_mount.part.0+0x68/0x470 [ 37.754646] do_mount+0x113c/0x2f10 [ 37.758282] ksys_mount+0xcf/0x130 [ 37.761834] __x64_sys_mount+0xba/0x150 [ 37.765813] do_syscall_64+0xf9/0x620 [ 37.769613] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.774906] [ 37.776533] Freed by task 8594: [ 37.779812] kfree+0xcc/0x210 executing program executing program executing program executing program executing program executing program executing program executing program [ 37.782911] kvfree+0x59/0x60 [ 37.786013] deactivate_locked_super+0x94/0x160 [ 37.790686] btrfs_mount_root+0x10a0/0x1830 [ 37.795003] mount_fs+0xa3/0x30c [ 37.798367] vfs_kern_mount.part.0+0x68/0x470 [ 37.802860] vfs_kern_mount+0x3c/0x60 [ 37.806662] btrfs_mount+0x23a/0xa93 [ 37.810386] mount_fs+0xa3/0x30c [ 37.813758] vfs_kern_mount.part.0+0x68/0x470 [ 37.818258] do_mount+0x113c/0x2f10 [ 37.821880] ksys_mount+0xcf/0x130 [ 37.825415] __x64_sys_mount+0xba/0x150 [ 37.829387] do_syscall_64+0xf9/0x620 executing program executing program executing program executing program executing program executing program executing program [ 37.833181] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.838367] [ 37.839999] The buggy address belongs to the object at ffff8880a5631c80 [ 37.839999] which belongs to the cache kmalloc-8192 of size 8192 [ 37.852839] The buggy address is located 1568 bytes inside of [ 37.852839] 8192-byte region [ffff8880a5631c80, ffff8880a5633c80) [ 37.864886] The buggy address belongs to the page: [ 37.869816] page:ffffea0002958c00 count:1 mapcount:0 mapping:ffff88813bff2080 index:0x0 compound_mapcount: 0 executing program executing program executing program executing program executing program executing program executing program [ 37.879778] flags: 0xfff00000008100(slab|head) [ 37.884372] raw: 00fff00000008100 ffffea0002952808 ffffea0002951708 ffff88813bff2080 [ 37.892244] raw: 0000000000000000 ffff8880a5631c80 0000000100000001 0000000000000000 [ 37.900112] page dumped because: kasan: bad access detected [ 37.905815] [ 37.907441] Memory state around the buggy address: [ 37.912370] ffff8880a5632180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.919737] ffff8880a5632200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb executing program executing program executing program executing program executing program executing program executing program [ 37.927100] >ffff8880a5632280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.934459] ^ [ 37.938869] ffff8880a5632300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.946232] ffff8880a5632380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.953590] ================================================================== [ 37.960954] Disabling lock debugging due to kernel taint [ 37.970602] Kernel panic - not syncing: panic_on_warn set ... [ 37.970602] executing program executing program executing program executing program executing program [ 37.977985] CPU: 0 PID: 8656 Comm: syz-executor733 Tainted: G B 4.19.154-syzkaller #0 [ 37.987248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.996598] Call Trace: [ 37.999188] dump_stack+0x1fc/0x2fe [ 38.002820] panic+0x26a/0x50e [ 38.006017] ? __warn_printk+0xf3/0xf3 [ 38.009907] ? preempt_schedule_common+0x45/0xc0 [ 38.014673] ? ___preempt_schedule+0x16/0x18 [ 38.019081] ? trace_hardirqs_on+0x55/0x210 [ 38.023399] kasan_end_report+0x43/0x49 [ 38.027378] kasan_report_error.cold+0xa7/0x1c7 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.032152] ? btrfs_printk+0x34f/0x3d0 [ 38.036129] __asan_report_load8_noabort+0x88/0x90 [ 38.041065] ? btrfs_printk+0x34f/0x3d0 [ 38.045041] btrfs_printk+0x34f/0x3d0 [ 38.048845] ? btrfs_show_devname.cold+0x18/0x18 [ 38.053598] ? mntput_no_expire+0x119/0xa30 [ 38.057919] ? __mutex_unlock_slowpath+0xea/0x610 [ 38.062763] ? check_preemption_disabled+0x41/0x280 [ 38.067804] device_list_add.cold+0x22e/0x320 [ 38.072304] ? btrfs_rm_dev_replace_free_srcdev+0x450/0x450 [ 38.078024] btrfs_scan_one_device+0x33f/0xd00 executing program executing program executing program executing program executing program executing program executing program [ 38.082614] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 38.087721] ? debug_check_no_obj_freed+0x201/0x482 [ 38.092752] ? device_list_add+0xe50/0xe50 [ 38.096978] ? kfree+0x110/0x210 [ 38.100339] ? btrfs_mount_root+0x107a/0x1830 [ 38.104837] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 38.109416] btrfs_mount_root+0x9df/0x1830 [ 38.113659] ? btrfs_decode_error+0x70/0x70 [ 38.117984] ? __mutex_unlock_slowpath+0xea/0x610 [ 38.122823] ? check_preemption_disabled+0x41/0x280 [ 38.127826] ? rcu_read_lock_sched_held+0x16c/0x1d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.132845] ? pcpu_alloc+0xc9/0x1190 [ 38.136652] ? __lockdep_init_map+0x100/0x5a0 [ 38.141138] mount_fs+0xa3/0x30c [ 38.144506] vfs_kern_mount.part.0+0x68/0x470 [ 38.149005] ? kfree+0x110/0x210 [ 38.152367] vfs_kern_mount+0x3c/0x60 [ 38.156165] btrfs_mount+0x23a/0xa93 [ 38.159883] ? btrfs_show_options+0xfd0/0xfd0 [ 38.164372] ? __mutex_unlock_slowpath+0xea/0x610 [ 38.169203] ? check_preemption_disabled+0x41/0x280 [ 38.174230] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 38.179253] ? pcpu_alloc+0xc9/0x1190 executing program executing program executing program executing program executing program executing program executing program executing program [ 38.183056] ? __lockdep_init_map+0x100/0x5a0 [ 38.187585] mount_fs+0xa3/0x30c [ 38.190957] vfs_kern_mount.part.0+0x68/0x470 [ 38.195448] do_mount+0x113c/0x2f10 [ 38.199071] ? cmp_ex_sort+0xc0/0xc0 [ 38.202780] ? __do_page_fault+0x180/0xd60 [ 38.207002] ? copy_mount_string+0x40/0x40 [ 38.211225] ? copy_mount_options+0x1cd/0x380 [ 38.215717] ? memset+0x20/0x40 [ 38.218990] ? copy_mount_options+0x26f/0x380 [ 38.223473] ksys_mount+0xcf/0x130 [ 38.227011] __x64_sys_mount+0xba/0x150 executing program executing program executing program executing program executing program executing program executing program executing program [ 38.231009] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 38.235674] do_syscall_64+0xf9/0x620 [ 38.239475] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.244659] RIP: 0033:0x448c2a [ 38.247856] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd a2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 aa a2 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 38.266751] RSP: 002b:00007fff69132908 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 38.274442] RAX: ffffffffffffffda RBX: 00007fff69132960 RCX: 0000000000448c2a executing program executing program executing program executing program [ 38.281702] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff69132920 [ 38.288965] RBP: 00007fff69132920 R08: 00007fff69132960 R09: 0000000000000000 [ 38.296244] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000031 [ 38.303618] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 38.311730] Kernel Offset: disabled [ 38.315350] Rebooting in 86400 seconds..