Hi >From time to time Fedora users reports crash at fat_detach. It happens randomly and seldom. Seems to be related with unmount operation.
Early reports are from 3.0 and problem still randomly occurs on recent kernels. Calltraces looks like below: BUG: unable to handle kernel NULL pointer dereference at 0000009c IP: [<c046d983>] do_raw_spin_lock+0xd/0x1e [<c07fcc94>] _raw_spin_lock+0xd/0xf [<f8fe03de>] fat_detach+0x20/0x59 [fat] [<f8fe0874>] fat_evict_inode+0x5b/0x5e [fat] [<c05058ad>] evict+0x57/0xe9 [<c0505a67>] iput+0xf8/0xfd [<c051ce0f>] fsnotify_destroy_mark+0xdf/0xf8 [<c051e488>] sys_inotify_rm_watch+0x59/0x79 [<c07fcfbc>] syscall_call+0x7/0xb what most likely indicate that fat_evict is called with inode with i_sb->s_fs_info == NULL. Some more info about this problem can be found here: https://bugzilla.redhat.com/show_bug.cgi?id=768534 Any insight on this isssue is welcome. Thanks Stanislaw -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
