Cc Dan On (01/17/17 12:22), Andrew Morton wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=192571 > > > > --- Comment #1 from Gluzskiy Alexandr <sss123next@xxxxxxx> --- > > [199961.576604] ------------[ cut here ]------------ > > [199961.577830] kernel BUG at mm/zswap.c:1108! zswap didn't manage to decompress the page: static int zswap_frontswap_load(unsigned type, pgoff_t offset, struct page *page) { ... dst = kmap_atomic(page); tfm = *get_cpu_ptr(entry->pool->tfm); ret = crypto_comp_decompress(tfm, src, entry->length, dst, &dlen); put_cpu_ptr(entry->pool->tfm); kunmap_atomic(dst); zpool_unmap_handle(entry->pool->zpool, entry->handle); BUG_ON(ret); ^^^^^^^^^^^ is there anything suspicious in dmesg? -ss [..] > > [199961.596459] Hardware name: System manufacturer System Product Name/M4A77TD, > > BIOS 2104 06/28/2010 > > [199961.597974] task: ffff880035c19680 task.stack: ffffc90000510000 > > [199961.599490] RIP: 0010:[<ffffffff8112c6c2>] [<ffffffff8112c6c2>] > > zswap_frontswap_load+0x142/0x160 > > [199961.601042] RSP: 0000:ffffc90000513cb0 EFLAGS: 00010282 > > [199961.602588] RAX: ffffffff818263a0 RBX: ffff88036b2fb930 RCX: > > ffffc90000513c98 > > [199961.604141] RDX: ffff8801a75da000 RSI: ffff8802ee9d0240 RDI: > > ffff88041c25d000 > > [199961.605687] RBP: ffff880035c19680 R08: ffff8802ee9d0249 R09: > > ffff8801a75da0ac > > [199961.607240] R10: ffff8801a75db000 R11: ffff8802ee9d027d R12: > > 00000000ffffffea > > [199961.608788] R13: ffff8804176e3830 R14: ffff8804176e3838 R15: > > 000000c42a6ac008 > > [199961.610315] FS: 00007fe1fa7fc700(0000) GS:ffff88042fc80000(0000) > > knlGS:0000000000000000 > > [199961.611838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [199961.613357] CR2: 000000c42a6ac008 CR3: 00000000a8411000 CR4: > > 00000000000006e0 > > [199961.614864] Stack: > > [199961.616327] 00001000fffffffe ffffffff81823780 000000000014487b > > ffffea00069d7680 > > [199961.617820] 0000000000000001 ffff880418614c00 ffffffff8112b768 > > ffffea00069d7680 > > [199961.619310] ffff880418614c00 000000000014487b 00000000024200ca > > ffff88011d834900 > > [199961.620799] Call Trace: > > [199961.622250] [<ffffffff8112b768>] ? __frontswap_load+0x68/0xc0 > > [199961.623689] [<ffffffff8112666c>] ? swap_readpage+0x8c/0x120 > > [199961.625115] [<ffffffff81126e61>] ? read_swap_cache_async+0x21/0x40 > > [199961.626545] [<ffffffff81126f96>] ? swapin_readahead+0x116/0x1e0 > > [199961.627973] [<ffffffff812b704e>] ? radix_tree_lookup_slot+0xe/0x20 > > [199961.629398] [<ffffffff8111236f>] ? do_swap_page+0x42f/0x660 > > [199961.630799] [<ffffffff81114bca>] ? handle_mm_fault+0x76a/0x1080 > > [199961.632163] [<ffffffff811544ec>] ? new_sync_read+0xac/0xe0 > > [199961.633496] [<ffffffff8102c7a9>] ? __do_page_fault+0x169/0x3e0 > > [199961.634798] [<ffffffff8102ca5b>] ? do_page_fault+0x1b/0x60 > > [199961.636106] [<ffffffff810e3cc9>] ? > > __context_tracking_exit.part.1+0x49/0x60 > > [199961.637424] [<ffffffff8157c7cf>] ? page_fault+0x1f/0x30 > > [199961.638739] Code: fb ff ff 41 c6 45 08 00 48 83 c4 08 44 89 e0 5b 5d 41 5c > > 41 5d 41 5e c3 be 0f 00 00 00 48 c7 c7 12 d6 6d 81 e8 e0 d2 f1 ff eb b0 <0f> 0b > > 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66 > > [199961.641538] RIP [<ffffffff8112c6c2>] zswap_frontswap_load+0x142/0x160 > > [199961.642922] RSP <ffffc90000513cb0> > > [199961.648971] ---[ end trace 76742a0cd4818a78 ]--- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>