Hi, while still running 3.7.0-rc7 on this powerpc machine (32bit, G4), the message below was printed while the machine was fairly loaded (disk/cpu). The machine is still running fine, but I thought I should share this incident. Full dmesg & .config: http://nerdbynature.de/bits/3.7.0-rc7/ The kernel says "-dirty" because a patch for arch/powerpc/kernel/entry_32.S has been applied. Christian. [0] http://lkml.indiana.edu/hypermail/linux/kernel/1211.3/01917.html ========================================================= [ INFO: possible irq lock inversion dependency detected ] 3.7.0-rc7-dirty #1 Not tainted --------------------------------------------------------- kswapd0/237 just changed the state of lock: (sb_internal#2){.+.+.?}, at: [<c022c9e4>] xfs_trans_alloc+0x2c/0x60 but this lock took another, RECLAIM_FS-unsafe lock in the past: (&(&ip->i_lock)->mr_lock/1){+.+.+.} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&(&ip->i_lock)->mr_lock/1); local_irq_disable(); lock(sb_internal#2); lock(&(&ip->i_lock)->mr_lock/1); <Interrupt> lock(sb_internal#2); *** DEADLOCK *** 2 locks held by kswapd0/237: #0: (shrinker_rwsem){++++..}, at: [<c00ae100>] shrink_slab+0x78/0x324 #1: (&type->s_umount_key#31){++++++}, at: [<c00de6c0>] grab_super_passive+0x58/0xcc [...] -- BOFH excuse #286: Telecommunications is downgrading. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
