Warning: Permanently added '10.128.1.1' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 530.248986] audit: type=1400 audit(1601009008.950:8): avc: denied { execmem } for pid=6476 comm="syz-executor360" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 530.282225] BTRFS: device fsid 3b7b29a3-d79d-449e-8760-f5c6064562ef devid 1 transid 5 /dev/loop3 [ 530.315694] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop5 [ 530.335583] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop1 [ 530.349971] BTRFS info (device loop3): disk space caching is enabled executing program executing program [ 530.356130] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop4 [ 530.358087] BTRFS info (device loop3): has skinny extents [ 530.377571] BTRFS info (device loop3): flagging fs with big metadata feature [ 530.390363] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop0 executing program executing program [ 530.469071] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop2 executing program executing program executing program executing program [ 530.556226] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop3 new:/dev/loop5 [ 530.579687] BTRFS error (device loop3): bad tree block start, want 30556160 have 0 [ 530.612989] BTRFS info (device loop3): read error corrected: ino 0 off 30556160 (dev /dev/loop3 sector 76064) [ 530.624294] BTRFS info (device loop3): read error corrected: ino 0 off 30560256 (dev /dev/loop3 sector 76072) [ 530.634769] BTRFS info (device loop3): read error corrected: ino 0 off 30564352 (dev /dev/loop3 sector 76080) [ 530.645578] BTRFS info (device loop3): read error corrected: ino 0 off 30568448 (dev /dev/loop3 sector 76088) executing program [ 530.658034] BTRFS error (device loop3): bad tree block start, want 30474240 have 0 [ 530.666730] BTRFS error (device loop3): bad tree block start, want 30474240 have 0 [ 530.674580] BTRFS warning (device loop3): failed to read root (objectid=7): -5 executing program executing program executing program executing program [ 530.786132] BTRFS error (device loop3): open_ctree failed [ 530.815731] BTRFS info (device loop2): disk space caching is enabled executing program [ 530.835209] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop1 [ 530.845104] BTRFS info (device loop2): has skinny extents [ 530.855020] BTRFS info (device loop2): flagging fs with big metadata feature [ 530.857012] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop4 [ 530.945373] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop3 executing program executing program [ 530.987056] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop0 [ 531.020560] BTRFS error (device loop2): bad tree block start, want 30556160 have 0 executing program executing program executing program [ 531.036444] BTRFS info (device loop2): read error corrected: ino 0 off 30556160 (dev /dev/loop2 sector 76064) [ 531.059119] BTRFS info (device loop2): read error corrected: ino 0 off 30560256 (dev /dev/loop2 sector 76072) [ 531.070285] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop0 [ 531.078928] BTRFS info (device loop2): read error corrected: ino 0 off 30564352 (dev /dev/loop2 sector 76080) [ 531.095751] BTRFS info (device loop2): read error corrected: ino 0 off 30568448 (dev /dev/loop2 sector 76088) [ 531.108497] BTRFS error (device loop2): bad tree block start, want 30474240 have 0 [ 531.120773] BTRFS error (device loop2): bad tree block start, want 30474240 have 0 [ 531.129153] BTRFS warning (device loop2): failed to read root (objectid=7): -5 executing program executing program [ 531.137327] BTRFS warning (device loop2): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop5 executing program [ 531.281391] BTRFS warning (device loop2): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop1 executing program executing program executing program [ 531.332194] BTRFS error (device loop2): open_ctree failed [ 531.349141] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop4 [ 531.362939] BTRFS info (device loop0): disk space caching is enabled [ 531.370149] BTRFS info (device loop0): has skinny extents executing program executing program executing program executing program executing program [ 531.375919] BTRFS info (device loop0): flagging fs with big metadata feature [ 531.395711] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop1 [ 531.417235] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 [ 531.446511] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop4 executing program executing program [ 531.538220] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop2 [ 531.577157] BTRFS error (device loop0): bad tree block start, want 30556160 have 0 [ 531.587705] BTRFS info (device loop0): read error corrected: ino 0 off 30556160 (dev /dev/loop0 sector 76064) [ 531.598469] BTRFS info (device loop0): read error corrected: ino 0 off 30560256 (dev /dev/loop0 sector 76072) [ 531.611700] BTRFS error (device loop0): bad tree block start, want 30474240 have 0 [ 531.622619] BTRFS warning (device loop0): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop1 executing program executing program [ 531.637660] BTRFS error (device loop0): bad tree block start, want 30474240 have 0 [ 531.646449] BTRFS warning (device loop0): failed to read root (objectid=7): -5 executing program executing program [ 531.707350] BTRFS warning (device loop0): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop2 executing program [ 531.791584] BTRFS warning (device loop0): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop4 executing program executing program executing program executing program executing program executing program [ 531.832363] BTRFS warning (device loop0): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 [ 531.854670] BTRFS: device fsid 3b7b29a3-d79d-449e-8760-f5c6064562ef devid 0 transid 5 /dev/loop1 [ 531.870277] BTRFS error (device loop0): open_ctree failed executing program executing program executing program executing program executing program executing program executing program [ 531.893477] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop5 [ 531.915357] BTRFS error (device loop1): superblock checksum mismatch [ 531.919680] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop2 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 [ 531.945181] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop4 [ 531.978023] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 executing program executing program executing program executing program executing program executing program executing program executing program [ 532.030928] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop2 [ 532.062707] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop5 executing program executing program executing program executing program executing program executing program [ 532.131637] BTRFS error (device loop1): open_ctree failed [ 532.156212] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop4 new:/dev/loop2 executing program executing program executing program [ 532.186284] BTRFS error (device loop3): superblock checksum mismatch executing program executing program executing program executing program [ 532.306874] BTRFS error (device loop3): open_ctree failed executing program executing program [ 532.360791] BTRFS error (device loop3): superblock checksum mismatch [ 532.368235] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop4 [ 532.388400] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop3 new:/dev/loop1 executing program executing program [ 532.436514] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 executing program executing program [ 532.508280] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 [ 532.524723] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 executing program executing program executing program executing program executing program [ 532.567461] BTRFS error (device loop3): open_ctree failed [ 532.573216] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 [ 532.590333] BTRFS error (device loop4): superblock checksum mismatch [ 532.601513] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop4 new:/dev/loop3 [ 532.648060] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop1 executing program executing program executing program executing program [ 532.697314] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop1 executing program executing program executing program [ 532.737880] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 executing program executing program executing program [ 532.798722] BTRFS error (device loop4): open_ctree failed [ 532.801658] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop5 [ 532.822488] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program executing program [ 532.855143] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 executing program executing program executing program [ 532.936109] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 [ 532.971191] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop1 executing program executing program executing program executing program executing program executing program [ 532.991029] BTRFS error (device loop4): open_ctree failed [ 533.000340] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop2 new:/dev/loop1 [ 533.014584] BTRFS error (device loop4): superblock checksum mismatch [ 533.036013] BTRFS error (device loop4): open_ctree failed executing program executing program executing program executing program executing program executing program executing program executing program [ 533.046002] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop3 [ 533.059609] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program [ 533.125954] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 executing program [ 533.168547] BTRFS error (device loop4): open_ctree failed [ 533.182497] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop4 new:/dev/loop1 [ 533.204984] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program [ 533.266407] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop4 new:/dev/loop1 executing program executing program executing program [ 533.309154] BTRFS error (device loop4): open_ctree failed [ 533.317350] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop2 executing program executing program [ 533.357753] BTRFS error (device loop4): superblock checksum mismatch executing program executing program executing program [ 533.398259] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 [ 533.426118] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop4 new:/dev/loop5 executing program executing program executing program executing program executing program [ 533.463757] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop0 new:/dev/loop3 executing program executing program executing program executing program [ 533.530429] BTRFS error (device loop4): open_ctree failed [ 533.537819] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop1 new:/dev/loop2 [ 533.561068] BTRFS error (device loop5): superblock checksum mismatch executing program executing program executing program executing program executing program executing program [ 533.695542] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop5 new:/dev/loop4 [ 533.725534] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop5 new:/dev/loop2 executing program executing program [ 533.826436] BTRFS error (device loop5): open_ctree failed [ 533.838596] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop0 new:/dev/loop3 [ 533.866922] BTRFS error (device loop0): superblock checksum mismatch executing program executing program [ 533.897234] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:0 old:/dev/loop0 new:/dev/loop3 [ 533.916398] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop1 new:/dev/loop4 executing program executing program executing program [ 533.954936] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop1 new:/dev/loop2 [ 533.983159] BTRFS error (device loop0): open_ctree failed executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 534.067741] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop4 [ 534.081534] BTRFS info (device loop5): disk space caching is enabled [ 534.093639] BTRFS info (device loop5): has skinny extents [ 534.099757] BTRFS info (device loop5): flagging fs with big metadata feature executing program executing program executing program executing program [ 534.102131] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 executing program executing program [ 534.185561] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop1 executing program [ 534.262238] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop3 [ 534.317255] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop3 [ 534.341429] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 executing program executing program executing program executing program executing program [ 534.362343] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 [ 534.370809] BTRFS error (device loop5): bad tree block start, want 30556160 have 0 [ 534.384647] BTRFS warning (device ): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 [ 534.402376] BTRFS warning (device loop5): failed to read root (objectid=7): -5 executing program executing program executing program [ 534.410149] BTRFS warning (device loop5): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop1 executing program executing program executing program [ 534.455683] BTRFS warning (device loop5): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop2 [ 534.485728] BTRFS warning (device loop5): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop1 executing program executing program [ 534.508467] BTRFS warning (device loop5): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop3 executing program executing program executing program executing program [ 534.539852] BTRFS error (device loop5): open_ctree failed [ 534.539961] BTRFS warning (device loop5): duplicate device fsid:devid for 3b7b29a3-d79d-449e-8760-f5c6064562ef:1 old:/dev/loop5 new:/dev/loop0 [ 534.562009] BTRFS info (device loop5): disk space caching is enabled [ 534.587525] BTRFS info (device loop5): has skinny extents [ 534.593082] BTRFS info (device loop5): flagging fs with big metadata feature [ 534.648412] ================================================================== [ 534.656101] BUG: KASAN: use-after-free in btrfs_printk+0x3e6/0x468 [ 534.662408] Read of size 8 at addr ffff888092961da0 by task systemd-udevd/6492 [ 534.669742] [ 534.671401] CPU: 1 PID: 6492 Comm: systemd-udevd Not tainted 4.19.147-syzkaller #0 [ 534.679087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 534.688422] Call Trace: [ 534.691097] dump_stack+0x22c/0x33e [ 534.694781] print_address_description.cold+0x56/0x25c [ 534.700063] kasan_report_error.cold+0x66/0xb9 [ 534.704638] ? btrfs_printk+0x3e6/0x468 [ 534.708614] __asan_report_load8_noabort+0x88/0x90 [ 534.713554] ? btrfs_printk+0x3e6/0x468 [ 534.717522] btrfs_printk+0x3e6/0x468 [ 534.721316] ? btrfs_show_devname.cold+0x63/0x63 [ 534.726130] ? mntput_no_expire+0x170/0xb30 [ 534.730467] ? __mutex_unlock_slowpath+0xea/0x660 [ 534.735353] device_list_add+0xa10/0x1200 [ 534.739490] ? btrfs_rm_dev_replace_free_srcdev+0x3f0/0x3f0 [ 534.745247] ? do_read_cache_page+0xfe/0x1080 [ 534.749731] btrfs_scan_one_device+0x33f/0xd70 [ 534.754329] ? lock_downgrade+0x750/0x750 [ 534.758469] ? lock_acquire+0x170/0x3f0 [ 534.762437] ? device_list_add+0x1200/0x1200 [ 534.766854] ? __might_fault+0x192/0x1d0 [ 534.770940] ? _copy_from_user+0xd2/0x130 [ 534.775075] btrfs_control_ioctl+0x16b/0x2a0 [ 534.779463] ? btrfs_put_super+0x40/0x40 [ 534.783530] do_vfs_ioctl+0xcdb/0x12e0 [ 534.787486] ? selinux_file_ioctl+0x44f/0x5e0 [ 534.791978] ? ioctl_preallocate+0x200/0x200 [ 534.796379] ? selinux_parse_skb.constprop.0+0x1f0/0x1f0 [ 534.801923] ? syscall_trace_enter+0x3b7/0xd80 [ 534.806502] ksys_ioctl+0x9b/0xc0 [ 534.809940] __x64_sys_ioctl+0x6f/0xb0 [ 534.813828] do_syscall_64+0xf9/0x670 [ 534.817616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 534.822788] RIP: 0033:0x7f157d668017 [ 534.826483] Code: 00 00 00 48 8b 05 81 7e 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 7e 2b 00 f7 d8 64 89 01 48 [ 534.845372] RSP: 002b:00007fff8f0ee9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 534.853071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f157d668017 [ 534.860341] RDX: 00007fff8f0ee9c0 RSI: 0000000090009427 RDI: 000000000000000f [ 534.867600] RBP: 00007fff8f0ee9c0 R08: 0000000000000000 R09: 0000000000000078 [ 534.874857] R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000000f [ 534.882105] R13: 0000000000000000 R14: 0000559845672d00 R15: 0000559845670910 [ 534.889362] [ 534.890980] Allocated by task 6937: [ 534.894719] __kmalloc_node+0x4c/0x70 [ 534.898546] kvmalloc_node+0xb4/0xf0 [ 534.902243] btrfs_mount_root+0x13f/0x1830 [ 534.906491] mount_fs+0xa3/0x318 [ 534.909855] vfs_kern_mount.part.0+0x68/0x470 [ 534.914347] vfs_kern_mount+0x3c/0x60 [ 534.918162] btrfs_mount+0x23a/0xa93 [ 534.921858] mount_fs+0xa3/0x318 [ 534.925220] vfs_kern_mount.part.0+0x68/0x470 [ 534.929707] do_mount+0x51c/0x2f10 [ 534.933223] ksys_mount+0xcf/0x130 [ 534.936753] __x64_sys_mount+0xba/0x150 [ 534.940803] do_syscall_64+0xf9/0x670 [ 534.944604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 534.949788] [ 534.951395] Freed by task 6937: [ 534.954660] kfree+0xcc/0x250 [ 534.957750] kvfree+0x59/0x60 [ 534.960848] deactivate_locked_super+0x8c/0x100 [ 534.965506] btrfs_mount_root+0x10a0/0x1830 [ 534.969816] mount_fs+0xa3/0x318 [ 534.973169] vfs_kern_mount.part.0+0x68/0x470 [ 534.977655] vfs_kern_mount+0x3c/0x60 [ 534.981445] btrfs_mount+0x23a/0xa93 [ 534.985159] mount_fs+0xa3/0x318 [ 534.988506] vfs_kern_mount.part.0+0x68/0x470 [ 534.992979] do_mount+0x51c/0x2f10 [ 534.996513] ksys_mount+0xcf/0x130 [ 535.000038] __x64_sys_mount+0xba/0x150 [ 535.003990] do_syscall_64+0xf9/0x670 [ 535.007771] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 535.012938] [ 535.014545] The buggy address belongs to the object at ffff888092961780 [ 535.014545] which belongs to the cache kmalloc-16384 of size 16384 [ 535.027531] The buggy address is located 1568 bytes inside of [ 535.027531] 16384-byte region [ffff888092961780, ffff888092965780) [ 535.039646] The buggy address belongs to the page: [ 535.044583] page:ffffea00024a5800 count:1 mapcount:0 mapping:ffff88812c3f5200 index:0x0 compound_mapcount: 0 [ 535.054536] flags: 0xfffe0000008100(slab|head) [ 535.059119] raw: 00fffe0000008100 ffffea000216d208 ffffea0002450a08 ffff88812c3f5200 [ 535.066980] raw: 0000000000000000 ffff888092961780 0000000100000001 0000000000000000 [ 535.074833] page dumped because: kasan: bad access detected [ 535.080516] [ 535.082128] Memory state around the buggy address: [ 535.087054] ffff888092961c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 535.094390] ffff888092961d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 535.101745] >ffff888092961d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 535.109086] ^ [ 535.113473] ffff888092961e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 535.121505] ffff888092961e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 535.128839] ================================================================== [ 535.136178] Disabling lock debugging due to kernel taint [ 535.141829] Kernel panic - not syncing: panic_on_warn set ... [ 535.141829] [ 535.149212] CPU: 1 PID: 6492 Comm: systemd-udevd Tainted: G B 4.19.147-syzkaller #0 [ 535.158297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 535.167638] Call Trace: [ 535.170227] dump_stack+0x22c/0x33e [ 535.173939] panic+0x2ac/0x565 [ 535.177134] ? __warn_printk+0xf3/0xf3 [ 535.181019] ? preempt_schedule_common+0x45/0xc0 [ 535.185767] ? ___preempt_schedule+0x16/0x18 [ 535.190223] ? trace_hardirqs_on+0x55/0x210 [ 535.194528] kasan_end_report+0x43/0x49 [ 535.198487] kasan_report_error.cold+0x83/0xb9 [ 535.203050] ? btrfs_printk+0x3e6/0x468 [ 535.207004] __asan_report_load8_noabort+0x88/0x90 [ 535.211916] ? btrfs_printk+0x3e6/0x468 [ 535.215867] btrfs_printk+0x3e6/0x468 [ 535.219664] ? btrfs_show_devname.cold+0x63/0x63 [ 535.224400] ? mntput_no_expire+0x170/0xb30 [ 535.228714] ? __mutex_unlock_slowpath+0xea/0x660 [ 535.233539] device_list_add+0xa10/0x1200 [ 535.237679] ? btrfs_rm_dev_replace_free_srcdev+0x3f0/0x3f0 [ 535.243368] ? do_read_cache_page+0xfe/0x1080 [ 535.247845] btrfs_scan_one_device+0x33f/0xd70 [ 535.252518] ? lock_downgrade+0x750/0x750 [ 535.256662] ? lock_acquire+0x170/0x3f0 [ 535.260616] ? device_list_add+0x1200/0x1200 [ 535.265002] ? __might_fault+0x192/0x1d0 [ 535.269057] ? _copy_from_user+0xd2/0x130 [ 535.273194] btrfs_control_ioctl+0x16b/0x2a0 [ 535.277597] ? btrfs_put_super+0x40/0x40 [ 535.281639] do_vfs_ioctl+0xcdb/0x12e0 [ 535.285506] ? selinux_file_ioctl+0x44f/0x5e0 [ 535.289984] ? ioctl_preallocate+0x200/0x200 [ 535.294382] ? selinux_parse_skb.constprop.0+0x1f0/0x1f0 [ 535.299822] ? syscall_trace_enter+0x3b7/0xd80 [ 535.304402] ksys_ioctl+0x9b/0xc0 [ 535.307849] __x64_sys_ioctl+0x6f/0xb0 [ 535.311717] do_syscall_64+0xf9/0x670 [ 535.315498] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 535.320674] RIP: 0033:0x7f157d668017 [ 535.324366] Code: 00 00 00 48 8b 05 81 7e 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 7e 2b 00 f7 d8 64 89 01 48 [ 535.343244] RSP: 002b:00007fff8f0ee9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 535.350927] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f157d668017 [ 535.358188] RDX: 00007fff8f0ee9c0 RSI: 0000000090009427 RDI: 000000000000000f [ 535.365436] RBP: 00007fff8f0ee9c0 R08: 0000000000000000 R09: 0000000000000078 [ 535.372690] R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000000f [ 535.379964] R13: 0000000000000000 R14: 0000559845672d00 R15: 0000559845670910 [ 535.388607] Kernel Offset: disabled [ 535.392227] Rebooting in 86400 seconds..