On Wed, Jun 19, 2019 at 5:57 PM syzbot <syzbot+0b224895cb9454584...@syzkaller.appspotmail.com> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 29f785ff Merge branch 'fixes' of git://git.kernel.org/pub/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=16d7464ea00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e5c77f8090a3b96b > dashboard link: https://syzkaller.appspot.com/bug?extid=0b224895cb9454584de1 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1076d132a00000
The same bpf plague bug... +bpf mailing list > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+0b224895cb9454584...@syzkaller.appspotmail.com > > kernel tried to execute NX-protected page - exploit attempt? (uid: 0) > BUG: unable to handle page fault for address: ffff88808eb889e0 > #PF: supervisor instruction fetch in kernel mode > #PF: error_code(0x0011) - permissions violation > PGD b401067 P4D b401067 PUD 21ffff067 PMD 800000008ea001e3 > Oops: 0011 [#1] PREEMPT SMP KASAN > CPU: 0 PID: 9056 Comm: udevd Not tainted 5.2.0-rc5+ #36 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:0xffff88808eb889e0 > Code: 00 00 15 b8 0d 86 ff ff ff ff 00 b5 0d 86 ff ff ff ff 80 20 a8 94 80 > 88 ff ff 00 00 00 00 00 00 00 00 a0 a9 1d 8b ff ff ff ff <10> 8a b8 8e 80 > 88 ff ff 15 b8 0d 86 ff ff ff ff 00 b5 0d 86 ff ff > RSP: 0018:ffff8880ae809e00 EFLAGS: 00010246 > RAX: 1ffff11011d71136 RBX: ffff88808eb889b0 RCX: dffffc0000000000 > RDX: dffffc0000000000 RSI: dffffc0000000000 RDI: ffff88808eb889a8 > RBP: ffff8880ae809f00 R08: 000000001dda059f R09: ffff888098310d88 > R10: ffff888098310d68 R11: ffff8880983104c0 R12: ffff8880ae809ed8 > R13: ffff88808eb889a8 R14: ffff88808eb889e0 R15: ffff8880ae809e78 > FS: 00007fa9e44d17a0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffff88808eb889e0 CR3: 0000000093130000 CR4: 00000000001406f0 > Call Trace: > <IRQ> > __do_softirq+0x25c/0x94c kernel/softirq.c:292 > invoke_softirq kernel/softirq.c:373 [inline] > irq_exit+0x180/0x1d0 kernel/softirq.c:413 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1068 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 > </IRQ> > RIP: 0010:tomoyo_domain_quota_is_ok+0x460/0x540 security/tomoyo/util.c:1039 > Code: 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 > 0f b6 04 08 38 d0 7f 98 84 c0 74 94 e8 42 ca ab fe eb 8d <e8> 0b 1e 73 fe > 49 8d 7c 24 1a 48 b9 00 00 00 00 00 fc ff df 48 89 > RSP: 0018:ffff88807a8f77e0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff82fda05c > RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000001 > RBP: ffff88807a8f7820 R08: ffff8880983104c0 R09: ffffed100f51ef11 > R10: ffffed100f51ef10 R11: 0000000000000000 R12: ffff8880a9a0d580 > R13: 0000000000000000 R14: 0000000000000185 R15: 0000000000000000 > tomoyo_supervisor+0x2e8/0xef0 security/tomoyo/common.c:2087 > tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] > tomoyo_path_permission security/tomoyo/file.c:587 [inline] > tomoyo_path_permission+0x263/0x360 security/tomoyo/file.c:573 > tomoyo_path_perm+0x31d/0x430 security/tomoyo/file.c:838 > tomoyo_inode_getattr+0x1d/0x30 security/tomoyo/tomoyo.c:129 > security_inode_getattr+0xf2/0x150 security/security.c:1179 > vfs_getattr+0x25/0x70 fs/stat.c:115 > vfs_statx+0x157/0x200 fs/stat.c:191 > vfs_stat include/linux/fs.h:3193 [inline] > __do_sys_newstat+0xa4/0x130 fs/stat.c:341 > __se_sys_newstat fs/stat.c:337 [inline] > __x64_sys_newstat+0x54/0x80 fs/stat.c:337 > do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7fa9e3bd8c65 > Code: 00 00 00 e8 5d 01 00 00 48 83 c4 18 c3 90 90 90 90 90 90 90 90 83 ff > 01 48 89 f0 77 18 48 89 c7 48 89 d6 b8 04 00 00 00 0f 05 <48> 3d 00 f0 ff > ff 77 17 f3 c3 90 48 8b 05 a1 51 2b 00 64 c7 00 16 > RSP: 002b:00007ffd19df2268 EFLAGS: 00000246 ORIG_RAX: 0000000000000004 > RAX: ffffffffffffffda RBX: 00007ffd19df2300 RCX: 00007fa9e3bd8c65 > RDX: 00007ffd19df2270 RSI: 00007ffd19df2270 RDI: 00007ffd19df2300 > RBP: 000000000165cf70 R08: 00007ffd19df2310 R09: 00007fa9e3c2efc0 > R10: 0000000000000000 R11: 0000000000000246 R12: 000000000165b250 > R13: 0000000000000000 R14: 000000000165b250 R15: 000000000000000b > Modules linked in: > CR2: ffff88808eb889e0 > ---[ end trace 9983c7ba6b20cddb ]--- > RIP: 0010:0xffff88808eb889e0 > Code: 00 00 15 b8 0d 86 ff ff ff ff 00 b5 0d 86 ff ff ff ff 80 20 a8 94 80 > 88 ff ff 00 00 00 00 00 00 00 00 a0 a9 1d 8b ff ff ff ff <10> 8a b8 8e 80 > 88 ff ff 15 b8 0d 86 ff ff ff ff 00 b5 0d 86 ff ff > RSP: 0018:ffff8880ae809e00 EFLAGS: 00010246 > RAX: 1ffff11011d71136 RBX: ffff88808eb889b0 RCX: dffffc0000000000 > RDX: dffffc0000000000 RSI: dffffc0000000000 RDI: ffff88808eb889a8 > RBP: ffff8880ae809f00 R08: 000000001dda059f R09: ffff888098310d88 > R10: ffff888098310d68 R11: ffff8880983104c0 R12: ffff8880ae809ed8 > R13: ffff88808eb889a8 R14: ffff88808eb889e0 R15: ffff8880ae809e78 > FS: 00007fa9e44d17a0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffff88808eb889e0 CR3: 0000000093130000 CR4: 00000000001406f0 > > > --- > 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 syzkal...@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/00000000000017c9e2058baf4825%40google.com. > For more options, visit https://groups.google.com/d/optout.
