------------[ cut here ]------------ WARNING: CPU: 1 PID: 10320 at kernel/cgroup/cgroup.c:1395 cset_cgroup_from_root+0x1a8/0x2a0 kernel/cgroup/cgroup.c:1395 Modules linked in: CPU: 1 PID: 10320 Comm: syz-executor.3 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:ffff88804773f9b8 EFLAGS: 00010016 RAX: 0000000000000b5a RBX: ffff88800dda9400 RCX: ffffc90006425000 RDX: 0000000000040000 RSI: ffffffff81384ec8 RDI: 0000000000000005 RBP: ffffffff85676efc R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800d5a0000 R14: ffff8880456cc400 R15: 0000000000000000 FS: 00007f5671722700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005614fd99c230 CR3: 00000000452ec000 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 seq_read_iter+0x510/0x12b0 fs/seq_file.c:230 seq_read+0x3dd/0x5b0 fs/seq_file.c:162 do_loop_readv_writev fs/read_write.c:761 [inline] do_loop_readv_writev fs/read_write.c:748 [inline] do_iter_read+0x4fa/0x760 fs/read_write.c:803 vfs_readv+0xe5/0x160 fs/read_write.c:921 do_readv+0x139/0x300 fs/read_write.c:958 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f56741acb19 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:00007f5671722188 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 00007f56742bff60 RCX: 00007f56741acb19 RDX: 0000000000000001 RSI: 0000000020002a80 RDI: 0000000000000004 RBP: 00007f5674206f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7875c7bf R14: 00007f5671722300 R15: 0000000000022000 irq event stamp: 486 hardirqs last enabled at (485): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (485): [] _raw_spin_unlock_irqrestore+0x38/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (486): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline] hardirqs last disabled at (486): [] _raw_spin_lock_irq+0x3e/0x40 kernel/locking/spinlock.c:167 softirqs last enabled at (334): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (185): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace c8cbd86ed4f87d9a ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10329 Comm: syz-executor.6 Tainted: G W 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x310 mm/slub.c:2909 kmem_cache_zalloc include/linux/slab.h:654 [inline] alloc_buffer_head+0x20/0x110 fs/buffer.c:3336 alloc_page_buffers+0x14d/0x700 fs/buffer.c:856 create_empty_buffers+0x2c/0x640 fs/buffer.c:1561 create_page_buffers+0x1bb/0x230 fs/buffer.c:1678 __block_write_begin_int+0x1d1/0x19c0 fs/buffer.c:1990 ext4_da_write_begin+0x37d/0xd40 fs/ext4/inode.c:3077 generic_perform_write+0x20a/0x4f0 mm/filemap.c:3336 ext4_buffered_write_iter+0x232/0x4a0 fs/ext4/file.c:269 ext4_file_write_iter+0x4fb/0x18d0 fs/ext4/file.c:683 call_write_iter include/linux/fs.h:2002 [inline] do_iter_readv_writev+0x476/0x750 fs/read_write.c:740 do_iter_write+0x191/0x700 fs/read_write.c:866 vfs_iter_write+0x70/0xa0 fs/read_write.c:907 iter_file_splice_write+0x762/0xc30 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:933 splice_direct_to_actor+0x387/0x980 fs/splice.c:888 do_splice_direct+0x1c4/0x290 fs/splice.c:976 do_sendfile+0x553/0x11e0 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0x1d1/0x210 fs/read_write.c:1304 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f25bc51fb19 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:00007f25b9a74188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f25bc633020 RCX: 00007f25bc51fb19 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007f25b9a741d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffcbed9d05f R14: 00007f25b9a74300 R15: 0000000000022000 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10339 Comm: syz-executor.7 Tainted: G W 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_percpu+0xa0/0x100 mm/kmemleak.c:924 pcpu_alloc+0x4e2/0x1240 mm/percpu.c:1842 cgroup_rstat_init+0x14f/0x1f0 kernel/cgroup/rstat.c:247 cgroup_create kernel/cgroup/cgroup.c:5337 [inline] cgroup_mkdir+0x709/0xf50 kernel/cgroup/cgroup.c:5477 kernfs_iop_mkdir+0x14d/0x1e0 fs/kernfs/dir.c:1148 vfs_mkdir+0x493/0x750 fs/namei.c:3706 do_mkdirat+0x150/0x2b0 fs/namei.c:3728 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3331d6cb19 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:00007f332f2e2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f3331e7ff60 RCX: 00007f3331d6cb19 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00007f332f2e21d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fffe461afdf R14: 00007f332f2e2300 R15: 0000000000022000