syzbot


WARNING in smk_write_syslog

Status: closed as dup on 2021/01/20 02:52
Subsystems: lsm
[Documentation on labels]
Reported-by: syzbot+f61aa9ae0d663fb8dd9f@syzkaller.appspotmail.com
First crash: 1189d, last: 1152d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
  
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
WARNING in memdup_user_nul lsm C inconclusive 2 1190d 1190d
Discussions (1)
Title Replies (including bot) Last reply
WARNING in smk_write_syslog 0 (1) 2021/01/20 02:39

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8453 at mm/page_alloc.c:4976 __alloc_pages_nodemask+0x4e5/0x5a0 mm/page_alloc.c:5020
Modules linked in:
CPU: 1 PID: 8453 Comm: syz-executor915 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages_nodemask+0x4e5/0x5a0 mm/page_alloc.c:5020
Code: aa 09 00 e9 dd fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c eb fd ff ff 4c 89 ef e8 54 aa 09 00 8b 74 24 18 e9 da fd ff ff <0f> 0b e9 f3 fd ff ff a9 00 00 08 00 75 16 8b 4c 24 1c 89 cb 81 e3
RSP: 0018:ffffc90001047a60 EFLAGS: 00010246
RAX: ffffc90001047ae0 RBX: ffffc90001047ae0 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90001047b08
RBP: ffffc90001047ba0 R08: dffffc0000000000 R09: ffffc90001047ae0
R10: fffff52000208f61 R11: 0000000000000000 R12: dffffc0000000000
R13: 000000000000000c R14: 1ffff92000208f58 R15: 0000000000040cc0
FS:  0000000000ef8880(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb9592bf38 CR3: 0000000017fee000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 alloc_pages include/linux/gfp.h:547 [inline]
 kmalloc_order+0x40/0x130 mm/slab_common.c:837
 kmalloc_order_trace+0x15/0x70 mm/slab_common.c:853
 kmalloc_large include/linux/slab.h:481 [inline]
 __kmalloc_track_caller+0x246/0x330 mm/slub.c:4457
 memdup_user_nul+0x26/0xf0 mm/util.c:260
 smk_write_syslog+0x29/0x90 security/smack/smackfs.c:2651
 vfs_write+0x289/0xc90 fs/read_write.c:603
 ksys_write+0x171/0x2a0 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440249
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffdedc36ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440249
RDX: 0000000000f0ff7f RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a50
R13: 0000000000401ae0 R14: 0000000000000000 R15: 0000000000000000

Crashes (13):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/01/16 02:41 upstream f4e087c666f5 65a7a854 .config console log report syz C ci-upstream-kasan-gce-smack-root
2021/02/22 02:47 upstream 55f62bc87347 a659b3f1 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/02/17 05:28 upstream f40ddce88593 98682e5e .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/02/11 08:05 upstream 291009f656e8 a52ee10a .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/02/08 06:41 upstream b75dba7f472c 2ce644fc .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/02/05 09:35 upstream 5c279c4cf206 23a562df .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/02/04 05:19 upstream 3afe9076a7c1 624dad51 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/28 18:56 upstream 76c057c84d28 7df34f59 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/22 01:33 upstream 9791581c049c d4f4eca5 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/21 21:01 upstream 9791581c049c d4f4eca5 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/19 02:01 upstream 19c329f68089 63631df1 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/18 12:42 upstream a1339d6355ac fd103621 .config console log report info ci-upstream-kasan-gce-smack-root WARNING in smk_write_syslog
2021/01/16 02:30 upstream f4e087c666f5 65a7a854 .config console log report info ci-upstream-kasan-gce-smack-root
* Struck through repros no longer work on HEAD.