------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 4348 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 1 PID: 4348 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline] WARNING: CPU: 1 PID: 4348 at fs/buffer.c:1145 __invalidate_bh_lrus fs/buffer.c:1380 [inline] WARNING: CPU: 1 PID: 4348 at fs/buffer.c:1145 invalidate_bh_lru+0x128/0x200 fs/buffer.c:1393 Modules linked in: CPU: 1 PID: 4348 Comm: udevd Not tainted 6.1.88-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 : ffff80001ec87410 x29: ffff80001ec87410 x28: ffff80001584d000 x27: ffff0001b437234e x26: 0000000000000001 x25: 00000000ffffffff x24: ffff0001b4387698 x23: 0000000000000000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000df2b7c28 x19: ffff800012381bc0 x18: ffff80001ec86800 x17: 0000000000000000 x16: ffff8000121618dc x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : b6479a98a2837000 x8 : b6479a98a2837000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001ec86cf8 x4 : ffff800015932b00 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 blkdev_close+0x58/0x94 block/fops.c:514 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 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: 139244 hardirqs last enabled at (139243): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (139244): [] smp_call_function_many_cond+0x81c/0x32b8 kernel/smp.c:988 softirqs last enabled at (138950): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (138948): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- udevd[4348]: symlink '../../loop0' '/dev/disk/by-label/untitled.tmp-b7:0' failed: Read-only file system udevd[4348]: symlink '../../loop0' '/dev/disk/by-uuid/06db47fa-2d76-30cf-a5fe-21149ac7af4a.tmp-b7:0' failed: Read-only file system udevd[4348]: symlink '../../loop4' '/dev/disk/by-uuid/395ef67a-297e-477c-816d-cd80a5b93e5d.tmp-b7:4' failed: Read-only file system udevd[4348]: inotify_add_watch(7, /dev/loop4p4, 10) failed: No such file or directory udevd[4348]: inotify_add_watch(7, /dev/loop4p4, 10) failed: No such file or directory