audit: type=1400 audit(1568107427.804:2942): avc: denied { create } for pid=22227 comm="syz-executor.2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 22258 at drivers/dma-buf/dma-buf.c:1039 dma_buf_vunmap+0x18d/0x200 drivers/dma-buf/dma-buf.c:1039 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 22258 Comm: syz-executor.3 Not tainted 4.14.142 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 audit: type=1400 audit(1568107427.854:2943): avc: denied { map } for pid=22248 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x197 lib/dump_stack.c:53 panic+0x1f2/0x426 kernel/panic.c:182 __warn.cold+0x2f/0x36 kernel/panic.c:546 report_bug+0x216/0x254 lib/bug.c:186 audit: type=1400 audit(1568107427.854:2944): avc: denied { map } for pid=22248 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 audit: type=1400 audit(1568107427.864:2945): avc: denied { map } for pid=22241 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:dma_buf_vunmap+0x18d/0x200 drivers/dma-buf/dma-buf.c:1039 audit: type=1400 audit(1568107427.864:2946): avc: denied { map } for pid=22247 comm="modprobe" path="/etc/ld.so.cache" dev="sda1" ino=2251 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 RSP: 0018:ffff88807b957bb8 EFLAGS: 00010297 RAX: ffff88806088e700 RBX: 0000000000000000 RCX: 1ffff11043018d1a RDX: 0000000000000000 RSI: ffffc90005ee7000 RDI: 0000000000000000 RBP: ffff88807b957be0 R08: dffffc0000000000 R09: ffffffff88c88588 R10: ffff88807b957cd0 R11: ffff88806088e700 R12: ffffc90005ee7000 R13: ffffc90005ee7000 R14: ffff88808bd44ae8 R15: ffff8880a9177580 vb2_vmalloc_detach_dmabuf+0x5e/0x90 drivers/media/v4l2-core/videobuf2-vmalloc.c:407 __vb2_plane_dmabuf_put.isra.0+0x10d/0x2f0 drivers/media/v4l2-core/videobuf2-core.c:273 audit: type=1400 audit(1568107427.874:2947): avc: denied { map } for pid=22247 comm="modprobe" path="/lib/x86_64-linux-gnu/libkmod.so.2.1.3" dev="sda1" ino=2811 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 __vb2_buf_dmabuf_put drivers/media/v4l2-core/videobuf2-core.c:289 [inline] __vb2_free_mem drivers/media/v4l2-core/videobuf2-core.c:411 [inline] __vb2_queue_free+0x60a/0x7d0 drivers/media/v4l2-core/videobuf2-core.c:454 vb2_core_queue_release+0x64/0x80 drivers/media/v4l2-core/videobuf2-core.c:2043 vb2_queue_release drivers/media/v4l2-core/videobuf2-v4l2.c:669 [inline] _vb2_fop_release+0x1cf/0x2a0 drivers/media/v4l2-core/videobuf2-v4l2.c:840 ptrace attach of "/root/syz-executor.0"[22271] was attempted by "/root/syz-executor.0"[22272] vb2_fop_release+0x75/0xc0 drivers/media/v4l2-core/videobuf2-v4l2.c:854 vivid_fop_release+0x180/0x3f0 drivers/media/platform/vivid/vivid-core.c:486 v4l2_release+0xf9/0x190 drivers/media/v4l2-core/v4l2-dev.c:446 __fput+0x275/0x7a0 fs/file_table.c:210 ____fput+0x16/0x20 fs/file_table.c:244 task_work_run+0x114/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4135d1 RSP: 002b:00007ffe363eb1c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000009 RCX: 00000000004135d1 RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000764010 R09: ffffffffffffffff R10: 00007ffe363eb290 R11: 0000000000000293 R12: 000000000075bf20 R13: 0000000000000003 R14: 0000000000764018 R15: ffffffffffffffff Kernel Offset: disabled Rebooting in 86400 seconds..