------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 1018 at kernel/locking/mutex.c:582 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 Modules linked in: CPU: 0 PID: 1018 Comm: kworker/u4:4 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:5) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 sp : ffff80001435b8e0 x29: ffff80001435b950 x28: ffff80000eec8000 x27: ffff0001192707b8 x26: 0000000000000000 x25: 0000000000000007 x24: 0000000000000002 x23: ffff8000088ea804 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0001192706a8 x18: 00000000000000c0 x17: ffff80000dda8198 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d93b690 x11: ff808000081c4d64 x10: 0000000000000000 x9 : 75007f325f44f300 x8 : 75007f325f44f300 x7 : 4e5241575f534b43 x6 : ffff80000c091ebc x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000028 Call trace: __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_ext_write_extent+0x3c/0xf8 fs/hfsplus/extents.c:149 hfsplus_write_inode+0x20/0x9c fs/hfsplus/super.c:154 write_inode fs/fs-writeback.c:1440 [inline] __writeback_single_inode+0x240/0x2e4 fs/fs-writeback.c:1652 writeback_sb_inodes+0x3e4/0x85c fs/fs-writeback.c:1878 wb_writeback+0x198/0x328 fs/fs-writeback.c:2052 wb_do_writeback+0xc8/0x384 fs/fs-writeback.c:2195 wb_workfn+0x70/0x15c fs/fs-writeback.c:2235 process_one_work+0x2d8/0x504 kernel/workqueue.c:2289 worker_thread+0x340/0x610 kernel/workqueue.c:2436 kthread+0x12c/0x158 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:863 irq event stamp: 1568253 hardirqs last enabled at (1568253): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1568253): [] _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 hardirqs last disabled at (1568252): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1568252): [] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (1568130): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (1568130): [] batadv_nc_purge_paths+0x1d0/0x214 net/batman-adv/network-coding.c:471 softirqs last disabled at (1568128): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (1568128): [] batadv_nc_purge_paths+0x60/0x214 net/batman-adv/network-coding.c:442 ---[ end trace 0000000000000000 ]---