BTRFS info (device loop1): enabling ssd optimizations ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4773 at kernel/cgroup/cgroup.c:1424 cset_cgroup_from_root kernel/cgroup/cgroup.c:1424 [inline] WARNING: CPU: 1 PID: 4773 at kernel/cgroup/cgroup.c:1424 cgroup_path_ns_locked+0x270/0x2dc kernel/cgroup/cgroup.c:2302 Modules linked in: CPU: 1 PID: 4773 Comm: syz.1.188 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : cset_cgroup_from_root kernel/cgroup/cgroup.c:1424 [inline] pc : cgroup_path_ns_locked+0x270/0x2dc kernel/cgroup/cgroup.c:2302 lr : cset_cgroup_from_root kernel/cgroup/cgroup.c:1424 [inline] lr : cgroup_path_ns_locked+0x270/0x2dc kernel/cgroup/cgroup.c:2302 sp : ffff80001d377680 x29: ffff80001d377680 x28: ffff0000cc583820 x27: 1ffff00002958069 x26: ffff800014cb9540 x25: ffff0000c928c000 x24: dfff800000000000 x23: ffff800014ac0000 x22: 0000000000000000 x21: ffff0000d77c6000 x20: ffff0000d5b28000 x19: 0000000000001000 x18: ffff80001d3773c0 x17: ffff80000897ee68 x16: ffff8000082eae98 x15: 000000000002a1ba x14: 00000000efe143ae x13: dfff800000000000 x12: 0000000000040000 x11: 0000000000000ede x10: ffff800020e6b000 x9 : 0000000000000edf x8 : ffff800008445a94 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff8000178ef2c0 x4 : 0000000000000008 x3 : ffff0000de88ee00 x2 : 0000000000001000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: cset_cgroup_from_root kernel/cgroup/cgroup.c:1424 [inline] cgroup_path_ns_locked+0x270/0x2dc kernel/cgroup/cgroup.c:2302 proc_cpuset_show+0x298/0x42c kernel/cgroup/cpuset.c:3787 proc_single_show+0xf4/0x1cc fs/proc/base.c:778 traverse+0x1e8/0x554 fs/seq_file.c:111 seq_read_iter+0xb84/0xc44 fs/seq_file.c:195 seq_read+0x388/0x4ec fs/seq_file.c:162 do_iter_read+0x434/0x684 fs/read_write.c:792 vfs_readv fs/read_write.c:910 [inline] do_preadv+0x1e4/0x324 fs/read_write.c:1002 __do_sys_preadv fs/read_write.c:1052 [inline] __se_sys_preadv fs/read_write.c:1047 [inline] __arm64_sys_preadv+0xa0/0xb8 fs/read_write.c:1047 __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: 83608 hardirqs last enabled at (83607): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (83607): [] _raw_spin_unlock_irqrestore+0xac/0x158 kernel/locking/spinlock.c:194 hardirqs last disabled at (83608): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline] hardirqs last disabled at (83608): [] _raw_spin_lock_irq+0x38/0x13c kernel/locking/spinlock.c:170 softirqs last enabled at (83594): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (83592): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 339b8dab2836a76c ]---