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Date: Sun, 6 Feb 2022 06:33:48 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org> Cc: netdev <netdev@...r.kernel.org>, Eric Dumazet <edumazet@...gle.com>, Eric Dumazet <eric.dumazet@...il.com> Subject: [PATCH net] net/smc: use GFP_ATOMIC allocation in smc_pnet_add_eth() From: Eric Dumazet <edumazet@...gle.com> My last patch moved the netdev_tracker_alloc() call to a section protected by a write_lock(). I should have replaced GFP_KERNEL with GFP_ATOMIC to avoid the infamous: BUG: sleeping function called from invalid context at include/linux/sched/mm.h:256 Fixes: 28f922213886 ("net/smc: fix ref_tracker issue in smc_pnet_add()") Signed-off-by: Eric Dumazet <edumazet@...gle.com> --- net/smc/smc_pnet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c index fb6331d97185a5db9b4539e7f081e9fa469bc44b..0599246c037690b4b01813956e4af74519277bea 100644 --- a/net/smc/smc_pnet.c +++ b/net/smc/smc_pnet.c @@ -382,7 +382,7 @@ static int smc_pnet_add_eth(struct smc_pnettable *pnettable, struct net *net, if (ndev) { new_pe->ndev = ndev; netdev_tracker_alloc(ndev, &new_pe->dev_tracker, - GFP_KERNEL); + GFP_ATOMIC); } list_add_tail(&new_pe->list, &pnettable->pnetlist); write_unlock(&pnettable->lock); -- 2.35.0.263.gb82422642f-goog
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