WARNING: CPU: 1 PID: 15931 at mm/slab_common.c:1031 kmalloc_slab+0x56/0x70 mm/slab_common.c:1031 Kernel panic - not syncing: panic_on_warn set ... kobject: 'loop3' (0000000099826a01): kobject_uevent_env CPU: 1 PID: 15931 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #48 kobject: 'loop3' (0000000099826a01): fill_kobj_path: path = '/devices/virtual/block/loop3' 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+0x1c4/0x2b4 lib/dump_stack.c:113 panic+0x238/0x4e7 kernel/panic.c:184 kobject: 'loop2' (00000000edfe4655): kobject_uevent_env kobject: 'loop2' (00000000edfe4655): fill_kobj_path: path = '/devices/virtual/block/loop2' __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x254/0x2d0 lib/bug.c:186 kobject: 'loop5' (00000000f91a075b): kobject_uevent_env fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 kobject: 'loop5' (00000000f91a075b): fill_kobj_path: path = '/devices/virtual/block/loop5' do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 kobject: 'loop1' (000000006cbaeaa2): kobject_uevent_env invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993 RIP: 0010:kmalloc_slab+0x56/0x70 mm/slab_common.c:1031 kobject: 'loop1' (000000006cbaeaa2): fill_kobj_path: path = '/devices/virtual/block/loop1' Code: c5 60 ab 00 89 5d c3 48 85 ff b8 10 00 00 00 74 f4 83 ef 01 c1 ef 03 0f b6 87 80 aa 00 89 eb d8 31 c0 81 e6 00 02 00 00 75 db <0f> 0b 5d c3 48 8b 04 c5 a0 aa 00 89 5d c3 66 90 66 2e 0f 1f 84 00 RSP: 0018:ffff88015d3672a0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000e2c6bc06 RCX: ffffc90001ee0000 RDX: 0000000000001d92 RSI: 0000000000000000 RDI: 00000000e2c6bc07 RBP: ffff88015d3672a0 R08: ffff8801cc21c300 R09: fffffbfff12e1434 R10: fffffbfff12e1434 R11: ffffffff8970a1a3 R12: 00000000006000c0 R13: ffff88015d367938 R14: ffff88015d3673c0 R15: 00000000006000c0 __do_kmalloc mm/slab.c:3713 [inline] __kmalloc+0x25/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] str_read+0x48/0x160 security/selinux/ss/policydb.c:1104 common_read+0x380/0x580 security/selinux/ss/policydb.c:1177 policydb_read+0xef9/0x5f30 security/selinux/ss/policydb.c:2407 security_load_policy+0x23b/0x1630 security/selinux/ss/services.c:2165 sel_write_load+0x24d/0x460 security/selinux/selinuxfs.c:565 __vfs_write+0x119/0x9f0 fs/read_write.c:485 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f03f9b2bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000000000095 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f03f9b2c6d4 R13: 00000000004c5646 R14: 00000000004d8fb8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..