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| author | Hoang Le <hoang.h.le@dektech.com.au> | 2021-12-17 10:00:59 +0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-12-17 19:18:48 -0800 |
| commit | f845fe5819efc4111c456c102f15db6d9ed3406e (patch) | |
| tree | a5b849a6e7a59ea678c0e4224b2f6c7d2c5e4324 /net/tipc | |
| parent | 1488fc204568f707fe2a42a913788c00a95af30e (diff) | |
| download | linux-f845fe5819efc4111c456c102f15db6d9ed3406e.tar.gz linux-f845fe5819efc4111c456c102f15db6d9ed3406e.tar.bz2 linux-f845fe5819efc4111c456c102f15db6d9ed3406e.zip | |
Revert "tipc: use consistent GFP flags"
This reverts commit 86c3a3e964d910a62eeb277d60b2a60ebefa9feb.
The tipc_aead_init() function can be calling from an interrupt routine.
This allocation might sleep with GFP_KERNEL flag, hence the following BUG
is reported.
[ 17.657509] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:230
[ 17.660916] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/3
[ 17.664093] preempt_count: 302, expected: 0
[ 17.665619] RCU nest depth: 2, expected: 0
[ 17.667163] Preemption disabled at:
[ 17.667165] [<0000000000000000>] 0x0
[ 17.669753] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Tainted: G W 5.16.0-rc4+ #1
[ 17.673006] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 17.675540] Call Trace:
[ 17.676285] <IRQ>
[ 17.676913] dump_stack_lvl+0x34/0x44
[ 17.678033] __might_resched.cold+0xd6/0x10f
[ 17.679311] kmem_cache_alloc_trace+0x14d/0x220
[ 17.680663] tipc_crypto_start+0x4a/0x2b0 [tipc]
[ 17.682146] ? kmem_cache_alloc_trace+0xd3/0x220
[ 17.683545] tipc_node_create+0x2f0/0x790 [tipc]
[ 17.684956] tipc_node_check_dest+0x72/0x680 [tipc]
[ 17.686706] ? ___cache_free+0x31/0x350
[ 17.688008] ? skb_release_data+0x128/0x140
[ 17.689431] tipc_disc_rcv+0x479/0x510 [tipc]
[ 17.690904] tipc_rcv+0x71c/0x730 [tipc]
[ 17.692219] ? __netif_receive_skb_core+0xb7/0xf60
[ 17.693856] tipc_l2_rcv_msg+0x5e/0x90 [tipc]
[ 17.695333] __netif_receive_skb_list_core+0x20b/0x260
[ 17.697072] netif_receive_skb_list_internal+0x1bf/0x2e0
[ 17.698870] ? dev_gro_receive+0x4c2/0x680
[ 17.700255] napi_complete_done+0x6f/0x180
[ 17.701657] virtnet_poll+0x29c/0x42e [virtio_net]
[ 17.703262] __napi_poll+0x2c/0x170
[ 17.704429] net_rx_action+0x22f/0x280
[ 17.705706] __do_softirq+0xfd/0x30a
[ 17.706921] common_interrupt+0xa4/0xc0
[ 17.708206] </IRQ>
[ 17.708922] <TASK>
[ 17.709651] asm_common_interrupt+0x1e/0x40
[ 17.711078] RIP: 0010:default_idle+0x18/0x20
Fixes: 86c3a3e964d9 ("tipc: use consistent GFP flags")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20211217030059.5947-1-hoang.h.le@dektech.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/crypto.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/tipc/crypto.c b/net/tipc/crypto.c index b4d9419a015b..d293614d5fc6 100644 --- a/net/tipc/crypto.c +++ b/net/tipc/crypto.c @@ -524,7 +524,7 @@ static int tipc_aead_init(struct tipc_aead **aead, struct tipc_aead_key *ukey, return -EEXIST; /* Allocate a new AEAD */ - tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + tmp = kzalloc(sizeof(*tmp), GFP_ATOMIC); if (unlikely(!tmp)) return -ENOMEM; @@ -1474,7 +1474,7 @@ int tipc_crypto_start(struct tipc_crypto **crypto, struct net *net, return -EEXIST; /* Allocate crypto */ - c = kzalloc(sizeof(*c), GFP_KERNEL); + c = kzalloc(sizeof(*c), GFP_ATOMIC); if (!c) return -ENOMEM; @@ -1488,7 +1488,7 @@ int tipc_crypto_start(struct tipc_crypto **crypto, struct net *net, } /* Allocate statistic structure */ - c->stats = alloc_percpu(struct tipc_crypto_stats); + c->stats = alloc_percpu_gfp(struct tipc_crypto_stats, GFP_ATOMIC); if (!c->stats) { if (c->wq) destroy_workqueue(c->wq); @@ -2461,7 +2461,7 @@ static void tipc_crypto_work_tx(struct work_struct *work) } /* Lets duplicate it first */ - skey = kmemdup(aead->key, tipc_aead_key_size(aead->key), GFP_KERNEL); + skey = kmemdup(aead->key, tipc_aead_key_size(aead->key), GFP_ATOMIC); rcu_read_unlock(); /* Now, generate new key, initiate & distribute it */ |