syzbot


kernel BUG in folio_flags

Status: upstream: reported on 2023/01/12 10:25
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+fa6f2ee9039b87ef86c4@syzkaller.appspotmail.com
Fix commit: mm-reimplement-compound_nr-fix
Patched on: [ci-upstream-linux-next-kasan-gce-root], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 262d, last: 19h12m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [tmpfs?] kernel BUG in folio_flags 1 (2) 2023/01/12 13:05

Sample crash report:
 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:762 [inline]
 slab_alloc_node mm/slab.c:3237 [inline]
 __kmem_cache_alloc_node+0x167/0x470 mm/slab.c:3521
 __do_kmalloc_node mm/slab_common.c:1022 [inline]
 __kmalloc_node+0x52/0x110 mm/slab_common.c:1030
 kmalloc_node include/linux/slab.h:619 [inline]
 kvmalloc_node+0x99/0x1a0 mm/util.c:607
 kvmalloc include/linux/slab.h:737 [inline]
 xt_alloc_table_info+0x3e/0xa0 net/netfilter/x_tables.c:1192
 do_replace net/ipv6/netfilter/ip6_tables.c:1139 [inline]
 do_ip6t_set_ctl+0x53c/0xbd0 net/ipv6/netfilter/ip6_tables.c:1636
 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x12b/0x190 net/ipv6/ipv6_sockglue.c:1017
 tcp_setsockopt+0x9d/0x100 net/ipv4/tcp.c:3677
 __sys_setsockopt+0x2cd/0x5b0 net/socket.c:2308
------------[ cut here ]------------
kernel BUG at include/linux/page-flags.h:314!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 16200 Comm: syz-executor.2 Not tainted 6.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314
Code: 06 41 83 e4 01 44 89 e6 e8 46 6c b1 ff 45 84 e4 0f 85 c9 fe ff ff e8 08 71 b1 ff 48 c7 c6 c0 27 9a 8a 48 89 ef e8 19 1c ef ff <0f> 0b e8 e2 6d 06 00 e9 6c fe ff ff 48 89 ef e8 d5 6d 06 00 eb b7
RSP: 0018:ffffc9000457f208 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000ae42000
RDX: 0000000000040000 RSI: ffffffff81d55c07 RDI: 0000000000000000
RBP: ffffea0000de5080 R08: 0000000000000000 R09: fffffbfff1d9ad6a
R10: ffffffff8ecd6b57 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffea0000de5080 R15: 0000000000037942
FS:  00007f36bb5e06c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f471d377978 CR3: 00000000264ad000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 folio_test_hugetlb include/linux/page-flags.h:835 [inline]
 PageHuge+0x215/0x2b0 mm/hugetlb.c:2050
 isolate_migratepages_block+0x61b/0x4a40 mm/compaction.c:950
 isolate_migratepages mm/compaction.c:2053 [inline]
 compact_zone+0x18f6/0x4020 mm/compaction.c:2491
 compact_node+0x13e/0x1e0 mm/compaction.c:2812
 compact_nodes mm/compaction.c:2825 [inline]
 sysctl_compaction_handler mm/compaction.c:2871 [inline]
 sysctl_compaction_handler+0x11b/0x1c0 mm/compaction.c:2858
 proc_sys_call_handler+0x4c6/0x6e0 fs/proc/proc_sysctl.c:600
 call_write_iter include/linux/fs.h:1985 [inline]
 do_iter_readv_writev+0x21e/0x3c0 fs/read_write.c:735
 do_iter_write+0x17f/0x830 fs/read_write.c:860
 vfs_iter_write+0x7a/0xb0 fs/read_write.c:901
 iter_file_splice_write+0x698/0xbf0 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0x118/0x180 fs/splice.c:1142
 splice_direct_to_actor+0x347/0xa30 fs/splice.c:1088
 do_splice_direct+0x1af/0x280 fs/splice.c:1194
 do_sendfile+0xb88/0x1390 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1316 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __x64_sys_sendfile64+0x155/0x220 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f36ba87cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36bb5e00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f36ba99bf80 RCX: 00007f36ba87cae9
RDX: 00000000200000c0 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007f36ba8c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f36ba99bf80 R15: 00007ffda0685798
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_flags+0x1b7/0x1f0 include/linux/page-flags.h:314
Code: 06 41 83 e4 01 44 89 e6 e8 46 6c b1 ff 45 84 e4 0f 85 c9 fe ff ff e8 08 71 b1 ff 48 c7 c6 c0 27 9a 8a 48 89 ef e8 19 1c ef ff <0f> 0b e8 e2 6d 06 00 e9 6c fe ff ff 48 89 ef e8 d5 6d 06 00 eb b7
RSP: 0018:ffffc9000457f208 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000ae42000
RDX: 0000000000040000 RSI: ffffffff81d55c07 RDI: 0000000000000000
RBP: ffffea0000de5080 R08: 0000000000000000 R09: fffffbfff1d9ad6a
R10: ffffffff8ecd6b57 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffea0000de5080 R15: 0000000000037942
FS:  00007f36bb5e06c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b7a577978 CR3: 00000000264ad000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (18):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/11 18:08 upstream 0bb80ecc33a8 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in folio_flags
2023/09/21 15:39 upstream 42dc814987c1 0b6a67ac .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/19 04:16 upstream 2cf0f7156238 0b6a67ac .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/15 07:50 upstream 9fdfb15a3dbf 0b6a67ac .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/10 14:54 upstream 535a265d7f0d 6654cf89 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/09 21:08 upstream 6099776f9f26 6654cf89 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/09 10:00 upstream 32bf43e4efdb 6654cf89 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/01 17:25 upstream e0152e7481c6 696ea0d2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/08/31 14:02 upstream b97d64c72259 4ad3538b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in folio_flags
2023/09/30 22:57 upstream 3b517966c561 8e26a358 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/09/27 07:44 upstream 0e945134b680 0b6a67ac .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/09/12 18:04 upstream a747acc0b752 59da8366 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/09/07 13:00 upstream 7ba2090ca64e 72324844 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/09/01 08:38 upstream 99d99825fc07 696ea0d2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/08/30 18:12 upstream 6c1b980a7e79 84803932 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/06/05 08:17 upstream 9561de3a55be a4ae4f42 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in folio_flags
2023/01/12 12:02 linux-next 0a093b2893c7 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in folio_flags
2023/01/12 08:30 linux-next 0a093b2893c7 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in folio_flags
* Struck through repros no longer work on HEAD.