Hello, syzbot found the following crash on: HEAD commit: 5a94f5bc Add linux-next specific files for 20200621 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12a02c76100000 kernel config: https://syzkaller.appspot.com/x/.config?x=e1788c418b2ddc66 dashboard link: https://syzkaller.appspot.com/bug?extid=95bccd805a4aa06a4b0d compiler: gcc (GCC) 9.0.0 20181231 (experimental) IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+95bccd805a4aa06a4b0d@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at mm/slab.h:232 kmem_cache_free+0x0/0x200 mm/slab.c:2262 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-rc1-next-20200621-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x2f/0x3a kernel/panic.c:600 report_bug+0x271/0x2f0 lib/bug.c:198 exc_invalid_op+0x1b9/0x370 arch/x86/kernel/traps.c:235 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 RIP: 0010:kmem_cache_debug_flags mm/slab.h:232 [inline] RIP: 0010:cache_from_obj mm/slab.h:459 [inline] RIP: 0010:kmem_cache_free+0x0/0x200 mm/slab.c:3678 Code: ff 49 c7 84 24 90 00 00 00 00 00 00 00 83 c3 01 39 1d 2c ec fb 08 77 af 5b 5d 41 5c 41 5d c3 90 66 2e 0f 1f 84 00 00 00 00 00 <0f> 0b 48 85 ff 0f 84 a9 01 00 00 48 83 3d 15 6b 02 08 00 0f 84 9c RSP: 0000:ffffffff89a07a58 EFLAGS: 00010293 RAX: ffffffff89a86580 RBX: ffff8880aa01f0e8 RCX: ffffffff81a84573 RDX: 0000000000000000 RSI: ffff8880aa01f480 RDI: ffff8880aa00fe00 RBP: ffff8880aa01f4a8 R08: ffffffff89a86580 R09: fffffbfff1340f3f R10: 0000000000000003 R11: fffffbfff1340f3e R12: ffff8880aa01f4b0 R13: ffff8880aa01f688 R14: ffff8880aa01f480 R15: ffffc90000000000 adjust_va_to_fit_type mm/vmalloc.c:980 [inline] __alloc_vmap_area mm/vmalloc.c:1096 [inline] alloc_vmap_area+0x1494/0x1df0 mm/vmalloc.c:1196 __get_vm_area_node+0x178/0x3b0 mm/vmalloc.c:2060 __vmalloc_node_range+0x12c/0x910 mm/vmalloc.c:2484 __vmalloc_node mm/vmalloc.c:2532 [inline] __vmalloc_area_node mm/vmalloc.c:2404 [inline] __vmalloc_node_range+0x76c/0x910 mm/vmalloc.c:2489 __vmalloc_node mm/vmalloc.c:2532 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:2546 alloc_large_system_hash+0x1c9/0x2e2 mm/page_alloc.c:8181 inode_init+0xab/0xbc fs/inode.c:2099 vfs_caches_init+0x104/0x11e fs/dcache.c:3231 start_kernel+0x978/0x9fb init/main.c:1025 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
