FreeBSD Bugzilla – Attachment 162116 Details for
Bug 172942
[smbfs] Unmounting a smb mount when the server became unavailable causes kernel panic
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[patch]
Fix a race that causes crashes in smbfs that destroyed mutexes prematurely
smbiod2.patch (text/plain), 688 bytes, created by
Rick Macklem
on 2015-10-16 12:29:02 UTC
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Description:
Fix a race that causes crashes in smbfs that destroyed mutexes prematurely
Filename:
MIME Type:
Creator:
Rick Macklem
Created:
2015-10-16 12:29:02 UTC
Size:
688 bytes
patch
obsolete
>--- smb_iod.c.orig 2015-10-10 18:53:34.000000000 -0400 >+++ smb_iod.c 2015-10-12 20:30:00.000000000 -0400 >@@ -659,6 +659,11 @@ smb_iod_thread(void *arg) > break; > tsleep(&iod->iod_flags, PWAIT, "90idle", iod->iod_sleeptimo); > } >+ >+ /* We can now safely destroy the mutexes and free the iod structure. */ >+ smb_sl_destroy(&iod->iod_rqlock); >+ smb_sl_destroy(&iod->iod_evlock); >+ free(iod, M_SMBIOD); > mtx_unlock(&Giant); > kproc_exit(0); > } >@@ -695,9 +700,6 @@ int > smb_iod_destroy(struct smbiod *iod) > { > smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); >- smb_sl_destroy(&iod->iod_rqlock); >- smb_sl_destroy(&iod->iod_evlock); >- free(iod, M_SMBIOD); > return 0; > } >
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bug 172942
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