syzbot
WARNING in ion_ioctl
Status:
fixed on 2018/02/04 23:45
Subsystems:
staging
[Documentation on labels]
Reported-by: syzbot+fa2d5f63ee5904a0115a@syzkaller.appspotmail.com
Fix commit:
e4e179a844f5
staging: android: ion: Switch from WARN to pr_warn
First crash: 3138d, last: 3105d
Sample crash report:
audit: type=1400 audit(1515542959.208:7): avc: denied { map } for pid=3498 comm="syzkaller645651" path="/root/syzkaller645651766" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
WARNING: CPU: 1 PID: 3498 at drivers/staging/android/ion/ion-ioctl.c:73 ion_ioctl+0x2db/0x380 drivers/staging/android/ion/ion-ioctl.c:73
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 3498 Comm: syzkaller645651 Not tainted 4.15.0-rc7+ #255
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:53
panic+0x1e4/0x41c kernel/panic.c:183
__warn+0x1dc/0x200 kernel/panic.c:547
report_bug+0x211/0x2d0 lib/bug.c:184
fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
fixup_bug arch/x86/kernel/traps.c:247 [inline]
do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:ion_ioctl+0x2db/0x380 drivers/staging/android/ion/ion-ioctl.c:73
RSP: 0018:ffff8801bffc7ce0 EFLAGS: 00010293
RAX: ffff8801c0110640 RBX: 0000000000000018 RCX: ffffffff8411053b
RDX: 0000000000000000 RSI: 0000000020003018 RDI: ffff8801bffc7d14
RBP: ffff8801bffc7d78 R08: d7987b3bb57b3c72 R09: ffffed0037ff8fa5
R10: 0000000000000003 R11: ffffed0037ff8fa4 R12: 1ffff10037ff8f9e
R13: 00000000c0184908 R14: ffff8801bffc7d50 R15: dffffc0000000000
vfs_ioctl fs/ioctl.c:46 [inline]
do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x43fca9
RSP: 002b:00007ffca0efdac8 EFLAGS: 00000203 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fca9
RDX: 0000000020003000 RSI: 00000000c0184908 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401610
R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..
Struck through repros no longer work on HEAD.