Hello, forked from http://marc.info/?l=linux-mm&m=146553910928716&w=2 new_slab()->BUG->die()->exit_signals() can be called from atomic context: local IRQs disabled in slab_alloc(). [ 429.232059] BUG: sleeping function called from invalid context at include/linux/sched.h:2960 [ 429.232719] in_atomic(): 0, irqs_disabled(): 1, pid: 562, name: gzip [ 429.233376] INFO: lockdep is turned off. [ 429.234034] irq event stamp: 1994762 [ 429.234697] hardirqs last enabled at (1994761): [<ffffffff8113f360>] __find_get_block+0xd9/0x117 [ 429.235360] hardirqs last disabled at (1994762): [<ffffffff81105516>] __slab_alloc.isra.18.constprop.22+0x20/0x6d [ 429.236026] softirqs last enabled at (1994554): [<ffffffff81040285>] __do_softirq+0x1bc/0x217 [ 429.236694] softirqs last disabled at (1994535): [<ffffffff810404ba>] irq_exit+0x3b/0x8f [ 429.237360] CPU: 0 PID: 562 Comm: gzip Tainted: G D 4.7.0-rc2-mm1-dbg-00231-g201dcbd-dirty #141 [ 429.238708] 0000000000000000 ffff88009434f520 ffffffff811e632c 0000000000000000 [ 429.239397] ffff8800bf8e3a80 ffff88009434f548 ffffffff810598c8 ffffffff8174b8c3 [ 429.240077] 0000000000000b90 0000000000000000 ffff88009434f570 ffffffff8105993f [ 429.240757] Call Trace: [ 429.241433] [<ffffffff811e632c>] dump_stack+0x68/0x92 [ 429.242113] [<ffffffff810598c8>] ___might_sleep+0x1fb/0x202 [ 429.242816] [<ffffffff8105993f>] __might_sleep+0x70/0x77 [ 429.243493] [<ffffffff810487a0>] exit_signals+0x1e/0x119 [ 429.244168] [<ffffffff8103eec3>] do_exit+0x111/0x8f8 [ 429.244844] [<ffffffff8107da75>] ? kmsg_dump+0x149/0x154 [ 429.245525] [<ffffffff81014a03>] oops_end+0x9d/0xa4 [ 429.246200] [<ffffffff81014b27>] die+0x55/0x5e [ 429.246868] [<ffffffff81012450>] do_trap+0x67/0x11d [ 429.247538] [<ffffffff8101272d>] do_error_trap+0x100/0x10f [ 429.248212] [<ffffffff811036a5>] ? new_slab+0x25/0x2be [ 429.248878] [<ffffffff8107c870>] ? wake_up_klogd+0x4e/0x61 [ 429.249544] [<ffffffff8107ccda>] ? console_unlock+0x457/0x4a2 [ 429.250202] [<ffffffff81001036>] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 429.250856] [<ffffffff81012889>] do_invalid_op+0x1b/0x1d [ 429.251508] [<ffffffff814a5e25>] invalid_op+0x15/0x20 [ 429.252158] [<ffffffff811036a5>] ? new_slab+0x25/0x2be [ 429.252803] [<ffffffff81105467>] ___slab_alloc.constprop.23+0x2f8/0x387 [ 429.253451] [<ffffffff8105993f>] ? __might_sleep+0x70/0x77 [ 429.254102] [<ffffffff810c7582>] ? mempool_alloc_slab+0x10/0x12 [ 429.254740] [<ffffffff810767fa>] ? lock_acquire+0x46/0x60 [ 429.255376] [<ffffffffa01ba17d>] ? fat_cache_add.part.1+0x135/0x140 [fat] [ 429.256012] [<ffffffff8110553b>] __slab_alloc.isra.18.constprop.22+0x45/0x6d [ 429.256657] [<ffffffff8110553b>] ? __slab_alloc.isra.18.constprop.22+0x45/0x6d [ 429.257292] [<ffffffff810c7582>] ? mempool_alloc_slab+0x10/0x12 [ 429.257959] [<ffffffff810c7582>] ? mempool_alloc_slab+0x10/0x12 [ 429.258592] [<ffffffff811055d9>] kmem_cache_alloc+0x76/0xc7 [ 429.259226] [<ffffffff810c7582>] mempool_alloc_slab+0x10/0x12 [ 429.259849] [<ffffffff810c7636>] mempool_alloc+0x7e/0x147 [ 429.260432] [<ffffffffa01ba53f>] ? fat_get_mapped_cluster+0x5a/0xeb [fat] [ 429.261024] [<ffffffff811ca221>] bio_alloc_bioset+0xbd/0x1b1 [ 429.261614] [<ffffffff81148078>] mpage_alloc+0x28/0x7b [ 429.262185] [<ffffffff8114856a>] do_mpage_readpage+0x43d/0x545 [ 429.262753] [<ffffffff81148767>] mpage_readpages+0xf5/0x152 [ 429.263320] [<ffffffffa01c0d1a>] ? fat_add_cluster+0x48/0x48 [fat] [ 429.263887] [<ffffffffa01c0d1a>] ? fat_add_cluster+0x48/0x48 [fat] [ 429.264447] [<ffffffff811ea19f>] ? __radix_tree_lookup+0x70/0xa3 [ 429.265017] [<ffffffffa01befc6>] fat_readpages+0x18/0x1a [fat] [ 429.265575] [<ffffffff810d0477>] __do_page_cache_readahead+0x215/0x2d6 [ 429.266135] [<ffffffff810d0883>] ondemand_readahead+0x34b/0x360 [ 429.266691] [<ffffffff810d0883>] ? ondemand_readahead+0x34b/0x360 [ 429.267240] [<ffffffff810d0a3a>] page_cache_async_readahead+0xae/0xb9 [ 429.267798] [<ffffffff810c546d>] generic_file_read_iter+0x1d1/0x6cf [ 429.268345] [<ffffffff81071351>] ? update_fast_ctr+0x49/0x63 [ 429.268896] [<ffffffff8111b183>] ? pipe_write+0x3c7/0x3d9 [ 429.269438] [<ffffffff81114418>] __vfs_read+0xc4/0xe8 [ 429.269976] [<ffffffff811144da>] vfs_read+0x9e/0x109 [ 429.270518] [<ffffffff81114892>] SyS_read+0x4c/0x89 [ 429.271057] [<ffffffff814a4ba5>] entry_SYSCALL_64_fastpath+0x18/0xa8 -ss -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
