------------[ cut here ]------------ WARNING: CPU: 1 PID: 6960 at kernel/cgroup/cgroup.c:1395 cset_cgroup_from_root+0x1a8/0x2a0 kernel/cgroup/cgroup.c:1395 Modules linked in: CPU: 1 PID: 6960 Comm: syz-executor.4 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:cset_cgroup_from_root+0x1a8/0x2a0 kernel/cgroup/cgroup.c:1395 Code: 50 08 00 be ff ff ff ff 48 c7 c7 08 3a 02 85 e8 6e 9e ad 02 31 ff 41 89 c4 89 c6 e8 d2 49 08 00 45 85 e4 75 07 e8 78 50 08 00 <0f> 0b e8 71 50 08 00 48 89 ea 83 e5 07 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88805c0f7b20 EFLAGS: 00010006 RAX: 00000000000009a0 RBX: ffff88800e0df800 RCX: ffffc90002c01000 RDX: 0000000000040000 RSI: ffffffff81384ec8 RDI: 0000000000000005 RBP: ffffffff85676efc R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880171b0000 R14: ffff888016c89800 R15: ffff888008fbafc0 FS: 00007f691cbb3700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001c00 CR3: 0000000055308000 CR4: 0000000000350ee0 Call Trace: cgroup_path_ns_locked+0x6c/0x110 kernel/cgroup/cgroup.c:2261 proc_cpuset_show+0x19a/0x510 kernel/cgroup/cpuset.c:3732 proc_single_show+0x121/0x1f0 fs/proc/base.c:775 traverse.part.0+0xd7/0x620 fs/seq_file.c:111 traverse fs/seq_file.c:101 [inline] seq_read_iter+0x934/0x12b0 fs/seq_file.c:195 seq_read+0x3dd/0x5b0 fs/seq_file.c:162 vfs_read+0x228/0x620 fs/read_write.c:494 ksys_pread64 fs/read_write.c:686 [inline] __do_sys_pread64 fs/read_write.c:696 [inline] __se_sys_pread64 fs/read_write.c:693 [inline] __x64_sys_pread64+0x201/0x260 fs/read_write.c:693 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f691f63db19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f691cbb3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007f691f750f60 RCX: 00007f691f63db19 RDX: 0000000000000ae3 RSI: 0000000020001100 RDI: 0000000000000004 RBP: 00007f691f697f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000006800 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffddebf3d8f R14: 00007f691cbb3300 R15: 0000000000022000 irq event stamp: 400 hardirqs last enabled at (399): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (399): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (400): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline] hardirqs last disabled at (400): [] _raw_spin_lock_irq+0x3e/0x40 kernel/locking/spinlock.c:167 softirqs last enabled at (0): [] copy_process+0x16ed/0x7800 kernel/fork.c:2075 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace e1e5e90299166b7f ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=6974 comm=syz-executor.0 tmpfs: Bad value for 'mpol' tmpfs: Unknown parameter ' 0 kB Locked: 0 kB THPeligible: 0 VmFlags: rd mr pf io de dd 7ffd7adea000-7ffd7adec000 r-xp 00000000 00:00 0 [vdso] Size: 8 kB KernelPageSize: ' tmpfs: Bad value for 'nr_inodes' tmpfs: Bad value for 'nr_inodes' cgroup2: Unknown parameter 'uid>00000000000000060928' SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35144 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=34247 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=53893 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=53481 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35656 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=33608 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35140 sclass=netlink_route_socket pid=6993 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=6998 comm=syz-executor.0 cgroup2: Unknown parameter 'uid>00000000000000060928'