syzbot


kernel BUG at kernel/cgroup/cgroup.c:LINE!

Status: auto-closed as invalid on 2020/08/29 09:20
Reported-by: syzbot+460a3b92548eb8a722b3@syzkaller.appspotmail.com
First crash: 789d, last: 789d

Sample crash report:
------------[ cut here ]------------
kernel BUG at kernel/cgroup/cgroup.c:1315!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 28455 Comm: syz-executor.4 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888064636280 task.stack: ffff8880481b0000
RIP: 0010:cset_cgroup_from_root+0x212/0x270 kernel/cgroup/cgroup.c:1315
RSP: 0018:ffff8880481b7a18 EFLAGS: 00010046
RAX: 0000000000040000 RBX: ffff8880a4161ce8 RCX: ffffc90005d39000
RDX: 0000000000040000 RSI: ffffffff8153bc52 RDI: ffff888099091b20
RBP: dffffc0000000000 R08: 000000000000518d R09: ffffffff8a0884a8
R10: ffff888064636b58 R11: ffff888064636280 R12: ffff88808e1bf1c0
R13: ffff8880969411c0 R14: ffff8880a4161d08 R15: ffff88808a5a2064
FS:  00007f12f6fe2700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff213f5fec CR3: 000000005fab2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cgroup_path_ns_locked+0x6c/0x110 kernel/cgroup/cgroup.c:2070
 cgroup_path_ns+0x43/0x70 kernel/cgroup/cgroup.c:2083
 proc_cpuset_show+0x21b/0x840 kernel/cgroup/cpuset.c:2750
 proc_single_show+0xe7/0x150 fs/proc/base.c:761
 seq_read+0x4d2/0x1160 fs/seq_file.c:237
 do_loop_readv_writev fs/read_write.c:695 [inline]
 do_loop_readv_writev fs/read_write.c:682 [inline]
 do_iter_read+0x3e3/0x5a0 fs/read_write.c:919
 vfs_readv+0xd3/0x130 fs/read_write.c:981
 do_preadv+0x161/0x200 fs/read_write.c:1065
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f12f6fe1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000004fa240 RCX: 000000000045c829
RDX: 00000000000003a8 RSI: 00000000200017c0 RDI: 0000000000000007
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000085c R14: 00000000004cb1c7 R15: 00007f12f6fe26d4
Code: d5 89 06 00 0f 0b e8 ce 89 06 00 48 81 fb e0 1e da 87 0f 85 65 fe ff ff e8 bc 89 06 00 4d 8d 65 10 e9 16 ff ff ff e8 ae 89 06 00 <0f> 0b 48 89 ef e8 f4 dc 2f 00 e9 23 fe ff ff 48 89 df e8 f7 dc 
RIP: cset_cgroup_from_root+0x212/0x270 kernel/cgroup/cgroup.c:1315 RSP: ffff8880481b7a18
---[ end trace 58f6bd6b33c0b67b ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/05/01 09:20 linux-4.14.y 050272a0423e 143a10e9 .config log report