loop4: detected capacity change from 0 to 128 oldfs: cannot read superblock ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4509 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 1 PID: 4509 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline] WARNING: CPU: 1 PID: 4509 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1380 [inline] WARNING: CPU: 1 PID: 4509 at fs/buffer.c:1145 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 Modules linked in: CPU: 1 PID: 4509 Comm: syz-executor.4 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 604010c5 (nZCv daIF +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : __brelse fs/buffer.c:1145 [inline] pc : brelse include/linux/buffer_head.h:326 [inline] pc : __invalidate_bh_lrus fs/buffer.c:1380 [inline] pc : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 lr : __brelse fs/buffer.c:1145 [inline] lr : brelse include/linux/buffer_head.h:326 [inline] lr : __invalidate_bh_lrus fs/buffer.c:1380 [inline] lr : invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 sp : ffff80001f6a7450 x29: ffff80001f6a7450 x28: ffff80001584d000 x27: ffff80019ebb5000 x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b4387698 x23: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000dff99c28 x19: ffff800012381bc0 x18: ffff80001f6a6bc0 x17: ffff8000188dd000 x16: ffff80001215c9dc x15: 0000000000000002 x14: 1ffff00002b0a0b0 x13: dfff800000000000 x12: 0000000000040000 x11: 0000000000010190 x10: ffff8000241ec000 x9 : c374aece07391300 x8 : c374aece07391300 x7 : ffff800008342900 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000858856c x2 : 0000000000000001 x1 : 0000000100000002 x0 : 0000000000000000 Call trace: __brelse fs/buffer.c:1145 [inline] brelse include/linux/buffer_head.h:326 [inline] __invalidate_bh_lrus fs/buffer.c:1380 [inline] invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 smp_call_function_many_cond+0x828/0x32b8 kernel/smp.c:989 on_each_cpu_cond_mask+0x5c/0xc4 kernel/smp.c:1166 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x34/0x40 fs/buffer.c:1412 kill_bdev block/bdev.c:75 [inline] blkdev_flush_mapping+0x128/0x280 block/bdev.c:664 blkdev_put_whole block/bdev.c:695 [inline] blkdev_put+0x464/0x6e0 block/bdev.c:955 kill_block_super+0x98/0xdc fs/super.c:1462 deactivate_locked_super+0xac/0x124 fs/super.c:332 mount_bdev+0x294/0x370 fs/super.c:1434 sysv_mount+0x44/0x58 fs/sysv/super.c:534 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1562 do_new_mount+0x278/0x8fc fs/namespace.c:3051 path_mount+0x590/0xe5c fs/namespace.c:3381 do_mount fs/namespace.c:3394 [inline] __do_sys_mount fs/namespace.c:3602 [inline] __se_sys_mount fs/namespace.c:3579 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 5198 hardirqs last enabled at (5197): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (5198): [] smp_call_function_many_cond+0x81c/0x32b8 kernel/smp.c:988 softirqs last enabled at (5116): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (5116): [] __do_softirq+0xc1c/0xe38 kernel/softirq.c:600 softirqs last disabled at (5013): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- loop4: detected capacity change from 0 to 512 EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support! EXT4-fs (loop4): encrypted files will use data=ordered instead of data journaling mode EXT4-fs (loop4): can't mount with journal_checksum, fs mounted w/o journal loop4: detected capacity change from 0 to 32768 BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop4 scanned by syz-executor.4 (4509) BTRFS info (device loop4): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf BTRFS info (device loop4): using crc32c (crc32c-generic) checksum algorithm BTRFS info (device loop4): using free space tree BTRFS warning (device loop4): couldn't read tree root BTRFS error (device loop4): open_ctree failed netlink: 256 bytes leftover after parsing attributes in process `syz-executor.4'.