syzbot
WARNING in aa_audit_file
Status:
upstream: reported C repro on 2020/10/24 07:05
Reported-by: syzbot+5e926a1a083ff8f14ceb@syzkaller.appspotmail.com
First crash: 2132d, last: 1269d
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Fix bisection attempts (7)
Sample crash report:
RBP: 00007fff85505030 R08: 0000000000000001 R09: 00007fc137c00032
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
AppArmor WARN aa_audit_file: ((!((&sa)->apparmor_audit_data)->request)):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7982 at security/apparmor/file.c:136 aa_audit_file.cold+0x18/0x4f security/apparmor/file.c:136
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 7982 Comm: syz-executor319 Not tainted 4.14.304-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
panic+0x1f9/0x42d kernel/panic.c:183
__warn.cold+0x20/0x44 kernel/panic.c:547
report_bug+0x208/0x250 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:177 [inline]
fixup_bug arch/x86/kernel/traps.c:172 [inline]
do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:aa_audit_file.cold+0x18/0x4f security/apparmor/file.c:136
RSP: 0018:ffff88808d21f7c8 EFLAGS: 00010282
RAX: 0000000000000049 RBX: 1ffff11011a43efc RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880b05229f0 RDI: ffffed1011a43eef
RBP: ffff88808d21f9f0 R08: 0000000000000049 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff4
R13: ffff88823f8bd680 R14: ffff88808d21f840 R15: 0000000000000000
aa_change_profile+0xcd3/0x2440 security/apparmor/domain.c:1277
apparmor_setprocattr+0x98c/0xa80 security/apparmor/lsm.c:651
security_setprocattr+0x74/0xb0 security/security.c:1272
proc_pid_attr_write+0x22b/0x320 fs/proc/base.c:2599
__vfs_write+0xe4/0x630 fs/read_write.c:480
vfs_write+0x17f/0x4d0 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xf2/0x210 fs/read_write.c:582
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fc137c456a9
RSP: 002b:00007fff85505028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fc137c456a9
RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fff85505030 R08: 0000000000000001 R09: 00007fc137c00032
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..
* Struck through repros no longer work on HEAD.