[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [  528.980210][ T6874] BTRFS: device fsid 8ae5b401-4ad8-4168-8672-01e7db0b90b5 devid 0 transid 5 /dev/loop5 scanned by syz-executor001 (6874)
[  528.996428][ T6876] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop0
[  529.011372][ T6875] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop1
[  529.027306][ T6873] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop2
executing program
executing program
executing program
executing program
executing program
[  529.100217][ T6879] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop3
[  529.131872][ T6882] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop4
executing program
executing program
executing program
[  529.283171][ T6875] BTRFS: device fsid 8ae5b401-4ad8-4168-8672-01e7db0b90b5 devid 1 transid 5 /dev/loop1 scanned by syz-executor001 (6875)
executing program
executing program
[  529.375314][ T6888] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop0 new:/dev/loop2
[  529.394045][ T6875] BTRFS error (device loop0): superblock checksum mismatch
[  529.402724][ T6879] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop3
executing program
[  529.447698][ T6882] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop4
[  529.471657][ T6874] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop5
executing program
executing program
executing program
executing program
[  529.542262][ T6906] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop5
[  529.583837][ T6875] BTRFS error (device loop0): open_ctree failed
[  529.591616][ T6915] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop0 new:/dev/loop2
[  529.617900][ T6910] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop3
executing program
executing program
executing program
executing program
[  529.632168][ T6905] BTRFS error (device loop0): superblock checksum mismatch
executing program
executing program
executing program
[  529.703596][ T6926] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop0 new:/dev/loop4
executing program
executing program
executing program
executing program
executing program
[  529.763769][ T6888] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop0 new:/dev/loop2
executing program
executing program
executing program
executing program
executing program
executing program
[  529.814169][ T6920] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop0 new:/dev/loop4
executing program
executing program
executing program
[  529.855105][ T6905] BTRFS error (device loop0): open_ctree failed
[  529.873634][ T6910] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop3
executing program
executing program
[  529.902496][ T6928] BTRFS error (device loop5): superblock checksum mismatch
executing program
executing program
executing program
executing program
[  530.123920][ T6928] BTRFS error (device loop5): open_ctree failed
[  530.150143][ T6905] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop0
[  530.167292][ T6959] BTRFS error (device loop5): superblock checksum mismatch
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  530.195969][ T6964] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop3
executing program
executing program
executing program
[  530.274833][ T6972] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop4
executing program
executing program
executing program
executing program
[  530.457940][ T6959] BTRFS error (device loop5): open_ctree failed
[  530.468285][ T6998] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop3
[  530.488962][ T6990] BTRFS error (device loop1): superblock checksum mismatch
executing program
executing program
executing program
[  530.532773][ T6972] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop4
executing program
executing program
executing program
executing program
[  530.645753][ T6990] BTRFS error (device loop1): open_ctree failed
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  530.799166][ T7002] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop4 new:/dev/loop5
[  530.818016][ T7014] BTRFS error (device loop0): superblock checksum mismatch
executing program
executing program
executing program
[  530.856367][ T7008] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop4 new:/dev/loop2
executing program
[  530.934562][ T7014] BTRFS error (device loop0): open_ctree failed
[  530.946229][ T7046] BTRFS error (device loop5): superblock checksum mismatch
executing program
executing program
executing program
[  531.066810][ T7046] BTRFS error (device loop5): open_ctree failed
[  531.077722][ T7044] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop5 new:/dev/loop3
[  531.092290][ T7014] BTRFS error (device loop5): superblock checksum mismatch
executing program
executing program
[  531.140866][ T7040] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop1
executing program
[  531.197861][ T6920] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop4
[  531.216718][ T7014] BTRFS error (device loop5): open_ctree failed
[  531.230205][ T7055] BTRFS error (device loop2): superblock checksum mismatch
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  531.303685][ T6937] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop2 new:/dev/loop5
executing program
executing program
executing program
[  531.344036][ T7044] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop3
executing program
executing program
[  531.485810][ T7055] BTRFS error (device loop2): open_ctree failed
[  531.518139][ T6906] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop2
executing program
executing program
executing program
executing program
[  531.535694][ T7076] BTRFS error (device loop1): superblock checksum mismatch
executing program
executing program
executing program
executing program
[  531.613560][ T7088] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop4
[  531.646793][ T7085] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop5
executing program
executing program
executing program
[  531.706108][ T7076] BTRFS error (device loop1): open_ctree failed
[  531.721521][ T6920] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop3 new:/dev/loop4
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  531.757040][ T7095] BTRFS error (device loop3): superblock checksum mismatch
[  531.776187][ T6888] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop0 new:/dev/loop5
[  531.821809][ T6896] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop3 new:/dev/loop1
executing program
[  531.891954][ T7112] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop3 new:/dev/loop2
executing program
executing program
executing program
[  532.017153][ T7095] BTRFS error (device loop3): open_ctree failed
executing program
[  532.204004][ T7132] BTRFS error (device loop4): superblock checksum mismatch
executing program
executing program
[  532.245305][ T7133] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop0
[  532.264433][ T7132] BTRFS error (device loop4): open_ctree failed
executing program
[  532.302773][ T7095] BTRFS error (device loop4): superblock checksum mismatch
[  532.317033][ T7136] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop3 new:/dev/loop2
[  532.336032][ T7133] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop3 new:/dev/loop0
executing program
executing program
executing program
[  532.394662][ T7150] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop5
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  532.477667][ T7165] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop2
[  532.495258][ T7095] BTRFS error (device loop4): open_ctree failed
executing program
executing program
executing program
[  532.537625][ T7151] BTRFS error (device loop4): superblock checksum mismatch
[  532.550368][ T6886] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop3
executing program
executing program
executing program
executing program
executing program
executing program
[  532.603416][ T6935] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop1 new:/dev/loop0
executing program
executing program
[  532.652657][ T6920] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop5
executing program
executing program
[  532.795856][ T7151] BTRFS error (device loop4): open_ctree failed
executing program
executing program
[  532.895521][ T7192] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop3
[  532.918639][ T7165] BTRFS error (device loop4): superblock checksum mismatch
executing program
executing program
executing program
executing program
[  532.940285][ T7196] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop0
executing program
executing program
[  533.014547][ T7165] BTRFS error (device loop4): open_ctree failed
[  533.024407][ T7205] BTRFS error (device loop1): superblock checksum mismatch
[  533.038709][ T6886] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop3
executing program
executing program
executing program
executing program
[  533.080175][ T6935] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop0
executing program
executing program
executing program
[  533.153208][ T7203] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop5
[  533.173271][ T6896] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop1 new:/dev/loop5
executing program
executing program
executing program
executing program
[  533.268483][ T7205] BTRFS error (device loop1): open_ctree failed
[  533.279963][ T7219] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop3
[  533.309469][ T7213] BTRFS error (device loop4): superblock checksum mismatch
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  533.359410][ T7226] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop0
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  533.422545][ T6886] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop3
[  533.453706][ T6888] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:0 old:/dev/loop4 new:/dev/loop1
executing program
executing program
executing program
executing program
executing program
[  533.515360][ T7213] BTRFS error (device loop4): open_ctree failed
[  533.541496][ T7242] BTRFS error (device loop5): superblock checksum mismatch
executing program
executing program
executing program
executing program
executing program
[  533.573630][ T7242] BTRFS error (device loop5): open_ctree failed
executing program
executing program
executing program
[  533.902561][ T7242] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop5
[  533.918794][ T7264] BTRFS info (device loop2): force clearing of disk cache
[  533.932966][ T7264] BTRFS info (device loop2): disabling tree log
[  533.939313][ T7264] BTRFS info (device loop2): disk space caching is enabled
executing program
[  533.958444][ T7266] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop3
[  533.969819][ T7264] BTRFS info (device loop2): has skinny extents
[  533.980473][ T7267] BTRFS warning (device <unknown>): duplicate device fsid:devid for 8ae5b401-4ad8-4168-8672-01e7db0b90b5:1 old:/dev/loop2 new:/dev/loop4
executing program
executing program
[  534.088966][   T21] BTRFS error (device loop2): bad tree block start, want 30425088 have 0
[  534.102443][ T7010] BTRFS error (device loop2): bad tree block start, want 30425088 have 0
[  534.111546][ T7264] BTRFS warning (device loop2): failed to read root (objectid=7): -5
executing program
executing program
[  534.198795][ T7264] BTRFS error (device loop2): open_ctree failed
[  534.213650][ T7272] BTRFS info (device loop2): force clearing of disk cache
[  534.220767][ T7272] BTRFS info (device loop2): disabling tree log
[  534.236088][ T7272] BTRFS info (device loop2): disk space caching is enabled
executing program
executing program
[  534.245401][ T7272] BTRFS info (device loop2): has skinny extents
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  534.498791][   T21] BTRFS error (device loop2): bad tree block start, want 30425088 have 0
[  534.516710][ T7010] BTRFS error (device loop2): bad tree block start, want 30425088 have 0
[  534.533341][ T7272] BTRFS warning (device loop2): failed to read root (objectid=7): -5
executing program
executing program
[  534.591722][ T7272] BTRFS error (device loop2): open_ctree failed
[  534.613900][ T7271] BTRFS info (device loop2): force clearing of disk cache
[  534.622675][ T7271] BTRFS info (device loop2): disabling tree log
[  534.631851][ T7271] BTRFS info (device loop2): disk space caching is enabled
[  534.639886][ T7271] BTRFS info (device loop2): has skinny extents
executing program
[  534.706537][ T7272] ==================================================================
[  534.714862][ T7272] BUG: KASAN: use-after-free in btrfs_printk+0x3eb/0x435
[  534.721860][ T7272] Read of size 8 at addr ffff8880886906a8 by task syz-executor001/7272
[  534.730071][ T7272] 
[  534.732402][ T7272] CPU: 0 PID: 7272 Comm: syz-executor001 Not tainted 5.9.0-rc7-syzkaller #0
[  534.741109][ T7272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  534.751144][ T7272] Call Trace:
[  534.754533][ T7272]  dump_stack+0x1d6/0x29e
[  534.758897][ T7272]  print_address_description+0x66/0x620
[  534.764489][ T7272]  ? printk+0x62/0x83
[  534.768536][ T7272]  ? _raw_spin_lock_irqsave+0x84/0xd0
[  534.773884][ T7272]  ? vprintk_emit+0x2f0/0x370
[  534.778563][ T7272]  kasan_report+0x132/0x1d0
[  534.783044][ T7272]  ? btrfs_printk+0x3eb/0x435
[  534.787696][ T7272]  btrfs_printk+0x3eb/0x435
[  534.792218][ T7272]  ? rcu_lock_acquire+0x5/0x30
[  534.796969][ T7272]  ? lock_is_held_type+0xb3/0xe0
[  534.801910][ T7272]  device_list_add+0x1a88/0x1d60
[  534.806827][ T7272]  btrfs_scan_one_device+0x196/0x490
[  534.812118][ T7272]  btrfs_mount_root+0x48f/0xb60
[  534.816999][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  534.822286][ T7272]  ? rcu_read_lock_sched_held+0x2f/0xa0
[  534.827807][ T7272]  ? trace_kfree+0xb2/0x100
[  534.832283][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  534.837543][ T7272]  legacy_get_tree+0xea/0x180
[  534.842193][ T7272]  ? btrfs_control_open+0x40/0x40
[  534.847228][ T7272]  vfs_get_tree+0x88/0x270
[  534.851648][ T7272]  vfs_kern_mount+0xc9/0x160
[  534.856218][ T7272]  btrfs_mount+0x33c/0xae0
[  534.860628][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  534.865888][ T7272]  ? rcu_read_lock_sched_held+0x2f/0xa0
[  534.871486][ T7272]  ? cap_capable+0x23f/0x280
[  534.876055][ T7272]  legacy_get_tree+0xea/0x180
[  534.880704][ T7272]  ? btrfs_resize_thread_pool+0x250/0x250
[  534.886415][ T7272]  vfs_get_tree+0x88/0x270
[  534.890828][ T7272]  path_mount+0x179d/0x29e0
[  534.895313][ T7272]  __se_sys_mount+0x126/0x180
[  534.899982][ T7272]  do_syscall_64+0x31/0x70
[  534.904469][ T7272]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  534.910390][ T7272] RIP: 0033:0x44939a
[  534.914267][ T7272] 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
[  534.933847][ T7272] RSP: 002b:00007ffd09a50738 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5
[  534.942234][ T7272] RAX: ffffffffffffffda RBX: 00007ffd09a50790 RCX: 000000000044939a
[  534.950205][ T7272] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd09a50750
[  534.958152][ T7272] RBP: 00007ffd09a50750 R08: 00007ffd09a50790 R09: 0000000000000000
[  534.966184][ T7272] R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000004d
[  534.974130][ T7272] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
[  534.982085][ T7272] 
[  534.984390][ T7272] Allocated by task 7272:
[  534.988699][ T7272]  __kasan_kmalloc+0x100/0x130
[  534.993527][ T7272]  kvmalloc_node+0x81/0x110
[  534.998030][ T7272]  btrfs_mount_root+0xd0/0xb60
[  535.002788][ T7272]  legacy_get_tree+0xea/0x180
[  535.007460][ T7272]  vfs_get_tree+0x88/0x270
[  535.011872][ T7272]  vfs_kern_mount+0xc9/0x160
[  535.017151][ T7272]  btrfs_mount+0x33c/0xae0
[  535.021549][ T7272]  legacy_get_tree+0xea/0x180
[  535.026220][ T7272]  vfs_get_tree+0x88/0x270
[  535.030628][ T7272]  path_mount+0x179d/0x29e0
[  535.035121][ T7272]  __se_sys_mount+0x126/0x180
[  535.039796][ T7272]  do_syscall_64+0x31/0x70
[  535.044388][ T7272]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  535.050270][ T7272] 
[  535.052593][ T7272] Freed by task 7272:
[  535.056561][ T7272]  kasan_set_track+0x3d/0x70
[  535.061183][ T7272]  kasan_set_free_info+0x17/0x30
[  535.066110][ T7272]  __kasan_slab_free+0xdd/0x110
[  535.070956][ T7272]  kfree+0x113/0x200
[  535.074848][ T7272]  deactivate_locked_super+0xa7/0xf0
[  535.080128][ T7272]  btrfs_mount_root+0x72b/0xb60
[  535.085082][ T7272]  legacy_get_tree+0xea/0x180
[  535.089749][ T7272]  vfs_get_tree+0x88/0x270
[  535.094146][ T7272]  vfs_kern_mount+0xc9/0x160
[  535.098741][ T7272]  btrfs_mount+0x33c/0xae0
[  535.103134][ T7272]  legacy_get_tree+0xea/0x180
[  535.107799][ T7272]  vfs_get_tree+0x88/0x270
[  535.112193][ T7272]  path_mount+0x179d/0x29e0
[  535.116699][ T7272]  __se_sys_mount+0x126/0x180
[  535.121353][ T7272]  do_syscall_64+0x31/0x70
[  535.125748][ T7272]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  535.131616][ T7272] 
[  535.133928][ T7272] The buggy address belongs to the object at ffff888088690000
[  535.133928][ T7272]  which belongs to the cache kmalloc-16k of size 16384
[  535.148133][ T7272] The buggy address is located 1704 bytes inside of
[  535.148133][ T7272]  16384-byte region [ffff888088690000, ffff888088694000)
[  535.161639][ T7272] The buggy address belongs to the page:
[  535.167271][ T7272] page:00000000fd4add54 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x88690
[  535.177414][ T7272] head:00000000fd4add54 order:3 compound_mapcount:0 compound_pincount:0
[  535.185745][ T7272] flags: 0xfffe0000010200(slab|head)
[  535.191014][ T7272] raw: 00fffe0000010200 ffffea0002754408 ffffea000221a008 ffff8880aa440b00
[  535.199590][ T7272] raw: 0000000000000000 ffff888088690000 0000000100000001 0000000000000000
[  535.208148][ T7272] page dumped because: kasan: bad access detected
[  535.214538][ T7272] 
[  535.216843][ T7272] Memory state around the buggy address:
[  535.222466][ T7272]  ffff888088690580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  535.230505][ T7272]  ffff888088690600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  535.238558][ T7272] >ffff888088690680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  535.246612][ T7272]                                   ^
executing program
executing program
[  535.251960][ T7272]  ffff888088690700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  535.260016][ T7272]  ffff888088690780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  535.268051][ T7272] ==================================================================
[  535.276100][ T7272] Disabling lock debugging due to kernel taint
executing program
[  535.310548][ T7272] Kernel panic - not syncing: panic_on_warn set ...
[  535.317173][ T7272] CPU: 0 PID: 7272 Comm: syz-executor001 Tainted: G    B             5.9.0-rc7-syzkaller #0
[  535.327210][ T7272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  535.337337][ T7272] Call Trace:
[  535.340621][ T7272]  dump_stack+0x1d6/0x29e
[  535.345047][ T7272]  panic+0x2c0/0x800
[  535.349187][ T7272]  ? trace_hardirqs_on+0x30/0x80
[  535.354099][ T7272]  kasan_report+0x1c9/0x1d0
[  535.358636][ T7272]  ? btrfs_printk+0x3eb/0x435
[  535.363330][ T7272]  btrfs_printk+0x3eb/0x435
[  535.367802][ T7272]  ? rcu_lock_acquire+0x5/0x30
[  535.372537][ T7272]  ? lock_is_held_type+0xb3/0xe0
[  535.377444][ T7272]  device_list_add+0x1a88/0x1d60
[  535.382438][ T7272]  btrfs_scan_one_device+0x196/0x490
[  535.387694][ T7272]  btrfs_mount_root+0x48f/0xb60
[  535.392515][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  535.397910][ T7272]  ? rcu_read_lock_sched_held+0x2f/0xa0
[  535.403426][ T7272]  ? trace_kfree+0xb2/0x100
[  535.407897][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  535.413181][ T7272]  legacy_get_tree+0xea/0x180
[  535.417827][ T7272]  ? btrfs_control_open+0x40/0x40
[  535.422912][ T7272]  vfs_get_tree+0x88/0x270
[  535.427315][ T7272]  vfs_kern_mount+0xc9/0x160
[  535.431874][ T7272]  btrfs_mount+0x33c/0xae0
[  535.436277][ T7272]  ? vfs_parse_fs_string+0x150/0x1e0
[  535.441530][ T7272]  ? rcu_read_lock_sched_held+0x2f/0xa0
[  535.447043][ T7272]  ? cap_capable+0x23f/0x280
[  535.451601][ T7272]  legacy_get_tree+0xea/0x180
[  535.456941][ T7272]  ? btrfs_resize_thread_pool+0x250/0x250
[  535.462640][ T7272]  vfs_get_tree+0x88/0x270
[  535.467024][ T7272]  path_mount+0x179d/0x29e0
[  535.471603][ T7272]  __se_sys_mount+0x126/0x180
[  535.476255][ T7272]  do_syscall_64+0x31/0x70
[  535.480656][ T7272]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  535.486534][ T7272] RIP: 0033:0x44939a
[  535.490402][ T7272] 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
[  535.510077][ T7272] RSP: 002b:00007ffd09a50738 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5
[  535.518456][ T7272] RAX: ffffffffffffffda RBX: 00007ffd09a50790 RCX: 000000000044939a
[  535.526411][ T7272] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd09a50750
[  535.534367][ T7272] RBP: 00007ffd09a50750 R08: 00007ffd09a50790 R09: 0000000000000000
[  535.542326][ T7272] R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000004d
[  535.550300][ T7272] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
[  535.563285][ T7272] Kernel Offset: disabled
[  535.567595][ T7272] Rebooting in 86400 seconds..