------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 6954 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline] WARNING: CPU: 1 PID: 6954 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline] WARNING: CPU: 1 PID: 6954 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline] WARNING: CPU: 1 PID: 6954 at fs/buffer.c:1229 __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 Modules linked in: CPU: 1 UID: 0 PID: 6954 Comm: dhcpcd-run-hook 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 : ffff8000a4046ec0 x29: ffff8000a4046ec0 x28: 0000000000000000 x27: dfff800000000000 x26: 00000000000000fc x25: ffff0000c84d09f8 x24: 000000000000000c x23: ffff0000f19ff3a0 x22: ffff0000f19ff488 x21: 0000000000000000 x20: ffff0000f19bfee0 x19: ffff0000c84d09f8 x18: 0000000000000008 x17: 0000000000000000 x16: ffff800083275834 x15: 0000000000000001 x14: 1fffe00036700aea x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000002 x10: 0000000000ff0100 x9 : 2e6b116cdfb40000 x8 : 2e6b116cdfb40000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000a40465f8 x4 : ffff80008fa8f840 x3 : ffff80008073f2fc x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 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 __getblk include/linux/buffer_head.h:380 [inline] sb_getblk include/linux/buffer_head.h:386 [inline] __ext4_get_inode_loc+0x3ec/0xc50 fs/ext4/inode.c:4440 ext4_get_inode_loc fs/ext4/inode.c:4568 [inline] ext4_reserve_inode_write+0x130/0x2e0 fs/ext4/inode.c:5827 __ext4_mark_inode_dirty+0x1d4/0x868 fs/ext4/inode.c:6004 ext4_dirty_inode+0xd4/0x104 fs/ext4/inode.c:6041 __mark_inode_dirty+0x2e0/0x12b0 fs/fs-writeback.c:2515 generic_update_time fs/inode.c:2112 [inline] inode_update_time fs/inode.c:2125 [inline] touch_atime+0x44c/0x8e8 fs/inode.c:2197 pick_link+0x368/0xb8c fs/namei.c:1893 step_into+0x9c0/0xce0 fs/namei.c:1982 walk_component fs/namei.c:2118 [inline] link_path_walk+0x5fc/0xc44 fs/namei.c:2477 path_lookupat+0x90/0x3d0 fs/namei.c:2633 filename_lookup+0x204/0x51c fs/namei.c:2663 vfs_statx+0xf0/0x41c fs/stat.c:344 vfs_fstatat+0xdc/0x15c fs/stat.c:366 __do_sys_newfstatat fs/stat.c:530 [inline] __se_sys_newfstatat fs/stat.c:524 [inline] __arm64_sys_newfstatat+0x10c/0x190 fs/stat.c:524 __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: 7972 hardirqs last enabled at (7971): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (7971): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2869 hardirqs last disabled at (7972): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (7886): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (7884): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---