loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): mounting ext3 file system using the ext4 subsystem ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 8804 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline] WARNING: CPU: 0 PID: 8804 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline] WARNING: CPU: 0 PID: 8804 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline] WARNING: CPU: 0 PID: 8804 at fs/buffer.c:1229 __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 Modules linked in: CPU: 0 UID: 0 PID: 8804 Comm: syz.4.356 Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __brelse fs/buffer.c:1229 [inline] pc : brelse include/linux/buffer_head.h:324 [inline] pc : bh_lru_install fs/buffer.c:1346 [inline] pc : __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 lr : __brelse fs/buffer.c:1229 [inline] lr : brelse include/linux/buffer_head.h:324 [inline] lr : bh_lru_install fs/buffer.c:1346 [inline] lr : __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 sp : ffff80009c1e70f0 x29: ffff80009c1e70f0 x28: 0000000000000000 x27: dfff800000000000 x26: 000000000000000a x25: ffff0000f3c791d0 x24: 000000000000000a x23: ffff0000cc1ca658 x22: ffff0000cc1cecb0 x21: 0000000000000000 x20: ffff0000db6e5c28 x19: ffff0000f3c79000 x18: 0000000000000008 x17: 0000000000000000 x16: ffff800080463930 x15: 0000000000000001 x14: 1fffe000366fecd0 x13: ffff80009c1e8000 x12: 0000000000000003 x11: 0000000000080000 x10: 0000000000000003 x9 : 08e20bf65ddf0000 x8 : 08e20bf65ddf0000 x7 : ffff80008b6aa750 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80008b746ea0 x0 : ffff800123ef6000 Call trace: __brelse fs/buffer.c:1229 [inline] (P) brelse include/linux/buffer_head.h:324 [inline] (P) bh_lru_install fs/buffer.c:1346 [inline] (P) __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 (P) bdev_getblk+0x48/0x62c fs/buffer.c:1425 ext4_sb_breadahead_unmovable+0x6c/0x130 fs/ext4/super.c:271 __ext4_get_inode_loc+0x7d8/0xc50 fs/ext4/inode.c:4523 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4553 [inline] __ext4_iget+0x3cc/0x3320 fs/ext4/inode.c:4775 ext4_get_journal_inode+0x40/0x1cc fs/ext4/super.c:5809 ext4_calculate_overhead+0xd58/0x1090 fs/ext4/super.c:4222 __ext4_fill_super fs/ext4/super.c:5483 [inline] ext4_fill_super+0x4418/0x57d0 fs/ext4/super.c:5733 get_tree_bdev_flags+0x38c/0x494 fs/super.c:1636 get_tree_bdev+0x2c/0x3c fs/super.c:1659 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5765 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 3698 hardirqs last enabled at (3697): [] raw_spin_rq_unlock_irq+0x14/0x24 kernel/sched/sched.h:1535 hardirqs last disabled at (3698): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (3690): [] softirq_handle_end kernel/softirq.c:407 [inline] softirqs last enabled at (3690): [] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589 softirqs last disabled at (3541): [] __do_softirq+0x14/0x20 kernel/softirq.c:595 ---[ end trace 0000000000000000 ]--- EXT4-fs (loop4): invalid journal inode EXT4-fs (loop4): can't get journal size EXT4-fs (loop4): 1 truncate cleaned up EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs warning (device loop4): verify_group_input:137: Cannot add at group 880048229 (only 1 groups)