EXT4-fs (loop3): mounted filesystem without journal. Opts: minixdf,nodelalloc,,errors=continue. Quota mode: none. ext4 filesystem being mounted at /204/mnt supports timestamps until 2038-01-19 (0x7fffffff) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8787 at kernel/locking/lockdep.c:896 look_up_lock_class+0x134/0x13c Modules linked in: CPU: 0 PID: 8787 Comm: syz.3.1080 Not tainted 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : look_up_lock_class+0x134/0x13c lr : look_up_lock_class+0x8c/0x13c sp : ffff800020b37140 x29: ffff800020b37140 x28: dfff800000000000 x27: 0000000000000001 x26: ffff80001b725d20 x25: ffff80001b725000 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: ffff80001b84f661 x20: ffff0000ffd74840 x19: ffff800017298c40 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082ec988 x15: 00000000200000c0 x14: 1ffff0000295806a x13: ffff800020b37300 x12: dfff800000000000 x11: ffff8000082efed8 x10: ffff800014ac034c x9 : ffff8000173c9d00 x8 : ffff80001b84f660 x7 : ffff800008deb540 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: look_up_lock_class+0x134/0x13c register_lock_class+0x90/0x6a4 kernel/locking/lockdep.c:1245 __lock_acquire+0x184/0x7638 kernel/locking/lockdep.c:4891 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 down_write_nested+0xc0/0x130 kernel/locking/rwsem.c:1667 ext4_double_down_write_data_sem+0x3c/0x4c ext4_move_extents+0x2b4/0xb4c fs/ext4/move_extent.c:609 __ext4_ioctl fs/ext4/ioctl.c:990 [inline] ext4_ioctl+0x32f8/0x61bc fs/ext4/ioctl.c:1276 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 4795 hardirqs last enabled at (4795): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (4794): [] kasan_quarantine_put+0x9c/0x204 mm/kasan/quarantine.c:204 softirqs last enabled at (4630): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (4628): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 64cae48678218c06 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 8787 Comm: syz.3.1080 Tainted: G W 5.15.170-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:52 [inline] should_fail+0x3b8/0x514 lib/fault-inject.c:146 __should_failslab+0xbc/0x110 mm/failslab.c:33 should_failslab+0x10/0x28 mm/slab_common.c:1344 slab_pre_alloc_hook+0x64/0xe8 mm/slab.h:494 slab_alloc_node mm/slub.c:3134 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x98/0x45c mm/slub.c:3233 __es_insert_extent+0x538/0x12c0 fs/ext4/extents_status.c:834 __es_remove_extent+0x900/0x1844 fs/ext4/extents_status.c:1420 ext4_es_remove_extent+0x224/0x574 fs/ext4/extents_status.c:1530 ext4_swap_extents+0x228/0x1af4 fs/ext4/extents.c:5684 move_extent_per_page+0x13e8/0x21cc fs/ext4/move_extent.c:359 ext4_move_extents+0x778/0xb4c fs/ext4/move_extent.c:673 __ext4_ioctl fs/ext4/ioctl.c:990 [inline] ext4_ioctl+0x32f8/0x61bc fs/ext4/ioctl.c:1276 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584