------------[ cut here ]------------
WARNING: fs/ext4/ext4_jbd2.c:75 at ext4_journal_check_start+0x1e4/0x230 fs/ext4/ext4_jbd2.c:75, CPU#1: syz.3.1505/10550
Modules linked in:
CPU: 1 UID: 0 PID: 10550 Comm: syz.3.1505 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ext4_journal_check_start+0x1e4/0x230 fs/ext4/ext4_jbd2.c:75
lr : ext4_journal_check_start+0x1e4/0x230 fs/ext4/ext4_jbd2.c:75
sp : ffff8000972d71e0
x29: ffff8000972d71e0 x28: ffff700012e5ae5c x27: dfff800000000000
x26: ffff8000888ebeb8 x25: 0000000000000000 x24: 1fffe00018e98481
x23: 1fffe00018e980c5 x22: dfff800000000000 x21: 0000000070818001
x20: ffff0000c74c0628 x19: ffff0000c74c0000 x18: 00000000ffffffff
x17: ffff80008a0e0c80 x16: ffff80008a51b538 x15: ffff0000c86e6250
x14: ffff0000c86e6230 x13: 0000000000000035 x12: ffff8000972d7355
x11: 0000000000000000 x10: 0000000000080000 x9 : 0000000000002f3c
x8 : ffff8000a2e47000 x7 : 0000000000000035 x6 : 0000000000000080
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080f77ae0
x2 : 0000000000000001 x1 : ffff0000c86e5700 x0 : 0000000000000001
Call trace:
 ext4_journal_check_start+0x1e4/0x230 fs/ext4/ext4_jbd2.c:75 (P)
 __ext4_journal_start_sb+0x190/0x948 fs/ext4/ext4_jbd2.c:107
 ext4_sample_last_mounted fs/ext4/file.c:880 [inline]
 ext4_file_open+0x5b0/0x864 fs/ext4/file.c:912
 do_dentry_open+0x5c8/0x10dc fs/open.c:947
 vfs_open+0x44/0x2d4 fs/open.c:1079
 do_open fs/namei.c:4699 [inline]
 path_openat+0x2234/0x2a6c fs/namei.c:4858
 do_file_open+0x1c4/0x2e4 fs/namei.c:4887
 do_open_execat+0x108/0x338 fs/exec.c:781
 open_exec+0x34/0x54 fs/exec.c:817
 bm_register_write+0x1c0/0x12c4 fs/binfmt_misc.c:821
 vfs_write+0x29c/0xa14 fs/read_write.c:686
 ksys_write+0x12c/0x224 fs/read_write.c:740
 __do_sys_write fs/read_write.c:751 [inline]
 __se_sys_write fs/read_write.c:748 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:748
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 176
hardirqs last  enabled at (175): [<ffff800080d407ac>] seqcount_lockdep_reader_access include/linux/seqlock.h:75 [inline]
hardirqs last  enabled at (175): [<ffff800080d407ac>] read_seqbegin+0x7c/0x144 include/linux/seqlock.h:838
hardirqs last disabled at (176): [<ffff80008673aac0>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:429
softirqs last  enabled at (106): [<ffff800080139d58>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (106): [<ffff800080139d58>] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline]
softirqs last  enabled at (106): [<ffff800080139d58>] fpsimd_restore_current_state+0x218/0x710 arch/arm64/kernel/fpsimd.c:1805
softirqs last disabled at (104): [<ffff800080139b7c>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (104): [<ffff800080139b7c>] get_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:234 [inline]
softirqs last disabled at (104): [<ffff800080139b7c>] fpsimd_restore_current_state+0x3c/0x710 arch/arm64/kernel/fpsimd.c:1798
---[ end trace 0000000000000000 ]---
binfmt_misc: register: failed to install interpreter file ./file2