Warning: Permanently added '10.128.10.62' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 82.841695][ T6878] BTRFS: device fsid f90cac8b-044b-4fa8-8bee-4b8d3da88dc2 devid 0 transid 0 /dev/loop0 scanned by syz-executor044 (6878) [ 82.865463][ T6879] BTRFS warning (device ): duplicate device /dev/loop3 devid 0 generation 0 scanned by syz-executor044 (6879) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 84.058169][ T6897] BTRFS: device fsid f90cac8b-044b-4fa8-8bee-4b8d3da88dc2 devid 1 transid 7 /dev/loop0 scanned by systemd-udevd (6897) 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 [ 85.085430][ T6980] BTRFS warning (device ): duplicate device /dev/loop4 devid 0 generation 0 scanned by syz-executor044 (6980) [ 85.100532][ T6972] BTRFS info (device loop0): disk space caching is enabled executing program executing program [ 85.140446][ T6972] BTRFS info (device loop0): has skinny extents [ 85.151526][ T6986] BTRFS warning (device ): duplicate device /dev/loop2 devid 0 generation 0 scanned by syz-executor044 (6986) executing program executing program [ 85.229434][ T6993] BTRFS warning (device ): duplicate device /dev/loop1 devid 0 generation 0 scanned by syz-executor044 (6993) executing program executing program executing program [ 85.298315][ T6953] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by systemd-udevd (6953) executing program executing program [ 85.411264][ T6921] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by systemd-udevd (6921) executing program executing program executing program executing program [ 85.456257][ T7035] BTRFS warning (device ): duplicate device /dev/loop2 devid 0 generation 0 scanned by syz-executor044 (7035) executing program executing program [ 85.586277][ T6972] BTRFS info (device loop0): enabling ssd optimizations [ 85.594622][ T166] BTRFS error (device loop0): bad tree block start, want 5296128 have 0 [ 85.609429][ T6972] BTRFS warning (device loop0): failed to read fs tree: -5 [ 85.638288][ T6897] BTRFS warning (device loop0): duplicate device /dev/loop1 devid 1 generation 7 scanned by systemd-udevd (6897) executing program executing program executing program executing program executing program [ 85.747986][ T6959] BTRFS warning (device loop0): duplicate device /dev/loop2 devid 1 generation 7 scanned by systemd-udevd (6959) [ 85.781214][ T6972] ------------[ cut here ]------------ executing program executing program [ 85.813480][ T6972] WARNING: CPU: 0 PID: 6972 at fs/btrfs/volumes.c:1172 close_fs_devices+0x715/0x930 [ 85.853138][ T6972] Modules linked in: [ 85.860407][ T6972] CPU: 1 PID: 6972 Comm: syz-executor044 Not tainted 5.9.0-rc5-next-20200918-syzkaller #0 [ 85.871441][ T6972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.882614][ T6972] RIP: 0010:close_fs_devices+0x715/0x930 [ 85.889311][ T6972] Code: e8 00 b8 4c fe 85 db 0f 85 65 f9 ff ff e8 93 bb 4c fe 0f 0b e9 59 f9 ff ff e8 87 bb 4c fe 0f 0b e9 c0 fe ff ff e8 7b bb 4c fe <0f> 0b e9 f9 fe ff ff 48 c7 c7 fc a1 8f 8b e8 e8 0b 8e fe e9 19 f9 executing program [ 85.910508][ T6972] RSP: 0018:ffffc900061b7758 EFLAGS: 00010293 [ 85.917462][ T6972] RAX: 0000000000000000 RBX: ffffffffffffffff RCX: ffffffff83285c2c [ 85.925465][ T6972] RDX: ffff8880a6bbe4c0 RSI: ffffffff83285d35 RDI: 0000000000000007 [ 85.934507][ T6972] RBP: dffffc0000000000 R08: 0000000000000000 R09: ffff8880a2be1133 [ 85.944069][ T6972] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a2be1130 [ 85.954946][ T6972] R13: ffff8880a2be11ec R14: ffff888093ab0508 R15: ffff8880a2be1050 [ 85.963601][ T6972] FS: 000000000208a880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 85.973168][ T6972] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.980438][ T6972] CR2: 00000000004babec CR3: 00000000a7bc7000 CR4: 00000000001506e0 [ 85.988994][ T6972] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.997810][ T6972] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.005810][ T6972] Call Trace: executing program [ 86.010377][ T6972] btrfs_close_devices+0x8e/0x4b0 [ 86.015416][ T6972] ? btrfs_free_extra_devids+0x1b0/0x1b0 [ 86.021888][ T6972] ? btrfs_destroy_inode+0x680/0x680 [ 86.027878][ T6972] open_ctree+0x492a/0x49cf [ 86.032388][ T6972] ? close_ctree+0x6d7/0x6d7 [ 86.045811][ T6972] ? sget+0x124/0x530 [ 86.050643][ T6972] btrfs_mount_root.cold+0x14/0x165 [ 86.055871][ T6972] ? parse_rescue_options+0x250/0x250 [ 86.067601][ T6972] ? lock_is_held_type+0xbb/0xf0 [ 86.072699][ T6972] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 86.079260][ T6972] ? kfree+0x24a/0x2a0 [ 86.083362][ T6972] ? vfs_parse_fs_string+0xf8/0x150 [ 86.096397][ T6972] ? vfs_parse_fs_param+0x550/0x550 [ 86.101642][ T6972] ? parse_rescue_options+0x250/0x250 [ 86.107924][ T6972] legacy_get_tree+0x105/0x220 [ 86.112707][ T6972] vfs_get_tree+0x89/0x2f0 [ 86.118176][ T6972] vfs_kern_mount.part.0+0xd3/0x170 [ 86.123489][ T6972] vfs_kern_mount+0x3c/0x60 [ 86.128965][ T6972] btrfs_mount+0x234/0xaa0 [ 86.133405][ T6972] ? btrfs_show_options+0x1080/0x1080 [ 86.144717][ T6972] ? vfs_parse_fs_string+0xc0/0x150 [ 86.150584][ T6972] ? lock_is_held_type+0xbb/0xf0 [ 86.155629][ T6972] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 86.162355][ T6972] ? kfree+0x24a/0x2a0 executing program [ 86.167049][ T6972] ? apparmor_capable+0x1d8/0x460 executing program [ 86.192292][ T6972] ? btrfs_show_options+0x1080/0x1080 executing program [ 86.257718][ T6972] legacy_get_tree+0x105/0x220 [ 86.262569][ T6972] vfs_get_tree+0x89/0x2f0 executing program executing program [ 86.307526][ T6972] path_mount+0x12ae/0x1e70 [ 86.312099][ T6972] ? strncpy_from_user+0x29e/0x3a0 [ 86.349460][ T6972] ? copy_mount_string+0x40/0x40 executing program executing program [ 86.376792][ T6972] ? getname_flags.part.0+0x1dd/0x4f0 [ 86.382225][ T6972] __x64_sys_mount+0x27f/0x300 executing program [ 86.437737][ T6972] ? copy_mnt_ns+0xae0/0xae0 [ 86.442365][ T6972] ? check_preemption_disabled+0x50/0x130 executing program executing program executing program [ 86.506980][ T6972] ? syscall_enter_from_user_mode+0x1d/0x60 [ 86.516355][ T6972] do_syscall_64+0x2d/0x70 [ 86.521352][ T6972] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 86.546345][ T6972] RIP: 0033:0x44851a executing program executing program [ 86.576604][ T6972] 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 executing program [ 86.628217][ T6972] RSP: 002b:00007ffcb26bce08 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 86.667837][ T6972] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000044851a executing program executing program [ 86.715141][ T6972] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcb26bce50 [ 86.729522][ T6972] RBP: 00007ffcb26bce90 R08: 00007ffcb26bce90 R09: 0000000020000000 executing program [ 86.765155][ T6972] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 [ 86.796676][ T6972] R13: 00007ffcb26bce50 R14: 0000000000000003 R15: 0000000000000001 [ 86.804723][ T6972] Kernel panic - not syncing: panic_on_warn set ... [ 86.811321][ T6972] CPU: 0 PID: 6972 Comm: syz-executor044 Not tainted 5.9.0-rc5-next-20200918-syzkaller #0 [ 86.821210][ T6972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.831269][ T6972] Call Trace: [ 86.834568][ T6972] dump_stack+0x198/0x1fb [ 86.838913][ T6972] panic+0x382/0x7fb [ 86.842817][ T6972] ? __warn_printk+0xf3/0xf3 [ 86.847430][ T6972] ? __warn.cold+0x1d/0xbb [ 86.851854][ T6972] ? __warn.cold+0x14/0xbb [ 86.856283][ T6972] ? close_fs_devices+0x715/0x930 [ 86.861319][ T6972] __warn.cold+0x38/0xbb [ 86.865571][ T6972] ? close_fs_devices+0x715/0x930 [ 86.870607][ T6972] report_bug+0x1bd/0x210 [ 86.874953][ T6972] handle_bug+0x38/0x90 [ 86.879126][ T6972] exc_invalid_op+0x14/0x40 [ 86.883640][ T6972] asm_exc_invalid_op+0x12/0x20 [ 86.888500][ T6972] RIP: 0010:close_fs_devices+0x715/0x930 [ 86.894140][ T6972] Code: e8 00 b8 4c fe 85 db 0f 85 65 f9 ff ff e8 93 bb 4c fe 0f 0b e9 59 f9 ff ff e8 87 bb 4c fe 0f 0b e9 c0 fe ff ff e8 7b bb 4c fe <0f> 0b e9 f9 fe ff ff 48 c7 c7 fc a1 8f 8b e8 e8 0b 8e fe e9 19 f9 [ 86.913755][ T6972] RSP: 0018:ffffc900061b7758 EFLAGS: 00010293 [ 86.919839][ T6972] RAX: 0000000000000000 RBX: ffffffffffffffff RCX: ffffffff83285c2c [ 86.927822][ T6972] RDX: ffff8880a6bbe4c0 RSI: ffffffff83285d35 RDI: 0000000000000007 [ 86.935806][ T6972] RBP: dffffc0000000000 R08: 0000000000000000 R09: ffff8880a2be1133 [ 86.943788][ T6972] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a2be1130 [ 86.951770][ T6972] R13: ffff8880a2be11ec R14: ffff888093ab0508 R15: ffff8880a2be1050 [ 86.963504][ T6972] ? close_fs_devices+0x60c/0x930 [ 86.968549][ T6972] ? close_fs_devices+0x715/0x930 [ 86.973591][ T6972] ? close_fs_devices+0x715/0x930 [ 86.978633][ T6972] btrfs_close_devices+0x8e/0x4b0 [ 86.983674][ T6972] ? btrfs_free_extra_devids+0x1b0/0x1b0 [ 86.989318][ T6972] ? btrfs_destroy_inode+0x680/0x680 [ 86.994617][ T6972] open_ctree+0x492a/0x49cf [ 86.999147][ T6972] ? close_ctree+0x6d7/0x6d7 [ 87.003791][ T6972] ? sget+0x124/0x530 [ 87.007791][ T6972] btrfs_mount_root.cold+0x14/0x165 [ 87.013006][ T6972] ? parse_rescue_options+0x250/0x250 [ 87.018392][ T6972] ? lock_is_held_type+0xbb/0xf0 [ 87.023345][ T6972] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 87.028902][ T6972] ? kfree+0x24a/0x2a0 [ 87.032983][ T6972] ? vfs_parse_fs_string+0xf8/0x150 [ 87.038191][ T6972] ? vfs_parse_fs_param+0x550/0x550 [ 87.043405][ T6972] ? parse_rescue_options+0x250/0x250 [ 87.048789][ T6972] legacy_get_tree+0x105/0x220 [ 87.053565][ T6972] vfs_get_tree+0x89/0x2f0 [ 87.057994][ T6972] vfs_kern_mount.part.0+0xd3/0x170 [ 87.063204][ T6972] vfs_kern_mount+0x3c/0x60 [ 87.067847][ T6972] btrfs_mount+0x234/0xaa0 [ 87.072284][ T6972] ? btrfs_show_options+0x1080/0x1080 [ 87.077701][ T6972] ? vfs_parse_fs_string+0xc0/0x150 [ 87.082922][ T6972] ? lock_is_held_type+0xbb/0xf0 [ 87.087874][ T6972] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 87.093428][ T6972] ? kfree+0x24a/0x2a0 [ 87.097511][ T6972] ? apparmor_capable+0x1d8/0x460 [ 87.102563][ T6972] ? btrfs_show_options+0x1080/0x1080 [ 87.107958][ T6972] legacy_get_tree+0x105/0x220 [ 87.112739][ T6972] vfs_get_tree+0x89/0x2f0 [ 87.117167][ T6972] path_mount+0x12ae/0x1e70 [ 87.121687][ T6972] ? strncpy_from_user+0x29e/0x3a0 [ 87.126820][ T6972] ? copy_mount_string+0x40/0x40 [ 87.131830][ T6972] ? getname_flags.part.0+0x1dd/0x4f0 [ 87.137235][ T6972] __x64_sys_mount+0x27f/0x300 [ 87.142017][ T6972] ? copy_mnt_ns+0xae0/0xae0 [ 87.146620][ T6972] ? check_preemption_disabled+0x50/0x130 [ 87.152356][ T6972] ? syscall_enter_from_user_mode+0x1d/0x60 [ 87.158267][ T6972] do_syscall_64+0x2d/0x70 executing program executing program executing program executing program executing program executing program executing program executing program [ 87.162700][ T6972] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 87.168596][ T6972] RIP: 0033:0x44851a [ 87.172489][ T6972] 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 [ 87.192085][ T6972] RSP: 002b:00007ffcb26bce08 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 87.200565][ T6972] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000044851a [ 87.208540][ T6972] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcb26bce50 [ 87.216525][ T6972] RBP: 00007ffcb26bce90 R08: 00007ffcb26bce90 R09: 0000000020000000 [ 87.224512][ T6972] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 [ 87.232612][ T6972] R13: 00007ffcb26bce50 R14: 0000000000000003 R15: 0000000000000001 [ 87.242130][ T6972] Kernel Offset: disabled [ 87.246542][ T6972] Rebooting in 86400 seconds..