syzbot |
sign-in | mailing list | source | docs |
============================= WARNING: suspicious RCU usage 5.13.0-rc1-syzkaller #0 Not tainted ----------------------------- kernel/sched/core.c:8304 Illegal context switch in RCU-bh read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 0 1 lock held by kswapd1/2180: #0: ffffffff8c0944a0 (fs_reclaim){+.+.}-{0:0}, at: __fs_reclaim_acquire+0x0/0x30 mm/page_alloc.c:5396 stack backtrace: CPU: 1 PID: 2180 Comm: kswapd1 Not tainted 5.13.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ___might_sleep+0x229/0x2c0 kernel/sched/core.c:8304 shrink_page_list+0x171/0x6060 mm/vmscan.c:1288 shrink_inactive_list+0x347/0xca0 mm/vmscan.c:2145 shrink_list mm/vmscan.c:2367 [inline] shrink_lruvec+0x7f9/0x14f0 mm/vmscan.c:2662 shrink_node_memcgs mm/vmscan.c:2850 [inline] shrink_node+0x868/0x1de0 mm/vmscan.c:2967 kswapd_shrink_node mm/vmscan.c:3710 [inline] balance_pgdat+0x745/0x1270 mm/vmscan.c:3868 kswapd+0x5b6/0xdb0 mm/vmscan.c:4125 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/05/10 15:43 | upstream | 6efb943b8616 | ca873091 | .config | console log | report | info | ci-qemu-upstream | WARNING: suspicious RCU usage in shrink_page_list |