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KMSAN: uninit-value in vmap_page_range_noflush (2)

Status: auto-closed as invalid on 2019/04/09 14:33
Subsystems: block trace
[Documentation on labels]
First crash: 2017d, last: 2016d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in vmap_page_range_noflush lsm keyrings 93 2017d 2017d 0/26 closed as invalid on 2018/10/10 13:14

Sample crash report:
kernel msg: ebtables bug: please report to author: counter_offset != totalcnt
==================================================================
BUG: KMSAN: uninit-value in vmap_pte_range mm/vmalloc.c:153 [inline]
BUG: KMSAN: uninit-value in vmap_pmd_range mm/vmalloc.c:172 [inline]
BUG: KMSAN: uninit-value in vmap_pud_range mm/vmalloc.c:189 [inline]
BUG: KMSAN: uninit-value in vmap_p4d_range mm/vmalloc.c:206 [inline]
BUG: KMSAN: uninit-value in vmap_page_range_noflush+0x975/0xed0 mm/vmalloc.c:231
CPU: 1 PID: 8022 Comm: syz-executor3 Not tainted 4.19.0-rc4+ #66
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x306/0x460 lib/dump_stack.c:113
 kmsan_report+0x1a2/0x2e0 mm/kmsan/kmsan.c:917
 __msan_warning+0x7c/0xe0 mm/kmsan/kmsan_instr.c:500
 vmap_pte_range mm/vmalloc.c:153 [inline]
 vmap_pmd_range mm/vmalloc.c:172 [inline]
 vmap_pud_range mm/vmalloc.c:189 [inline]
 vmap_p4d_range mm/vmalloc.c:206 [inline]
 vmap_page_range_noflush+0x975/0xed0 mm/vmalloc.c:231
 vmap_page_range mm/vmalloc.c:244 [inline]
 map_vm_area+0x17d/0x1f0 mm/vmalloc.c:1344
 kmsan_vmap+0xf2/0x180 mm/kmsan/kmsan_hooks.c:250
 vmap+0x3a1/0x510 mm/vmalloc.c:1648
 relay_alloc_buf kernel/relay.c:141 [inline]
 relay_create_buf kernel/relay.c:177 [inline]
 relay_open_buf+0x81e/0x19d0 kernel/relay.c:450
 relay_open+0xabb/0x1370 kernel/relay.c:597
 do_blk_trace_setup+0xaf7/0x1780 kernel/trace/blktrace.c:532
 __blk_trace_setup+0x20b/0x380 kernel/trace/blktrace.c:577
 blk_trace_setup+0xfb/0x140 kernel/trace/blktrace.c:595
 sg_ioctl+0x10ff/0x58b0 drivers/scsi/sg.c:1117
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xcf3/0x2810 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457519
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f48cdce4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457519
RDX: 0000000020000000 RSI: 00000000c0481273 RDI: 0000000000000005
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48cdce56d4
R13: 00000000004be982 R14: 00000000004ce680 R15: 00000000ffffffff

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:255 [inline]
 kmsan_internal_poison_shadow+0xc8/0x1d0 mm/kmsan/kmsan.c:180
 kmsan_kmalloc+0xa4/0x120 mm/kmsan/kmsan_hooks.c:104
 __kmalloc+0x14b/0x440 mm/slub.c:3789
 kmalloc include/linux/slab.h:518 [inline]
 kmsan_vmap+0x9b/0x180 mm/kmsan/kmsan_hooks.c:239
 vmap+0x3a1/0x510 mm/vmalloc.c:1648
 relay_alloc_buf kernel/relay.c:141 [inline]
 relay_create_buf kernel/relay.c:177 [inline]
 relay_open_buf+0x81e/0x19d0 kernel/relay.c:450
 relay_open+0xabb/0x1370 kernel/relay.c:597
 do_blk_trace_setup+0xaf7/0x1780 kernel/trace/blktrace.c:532
 __blk_trace_setup+0x20b/0x380 kernel/trace/blktrace.c:577
 blk_trace_setup+0xfb/0x140 kernel/trace/blktrace.c:595
 sg_ioctl+0x10ff/0x58b0 drivers/scsi/sg.c:1117
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xcf3/0x2810 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================

Crashes (41):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/10/11 14:25 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 11:04 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:59 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:56 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:55 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:53 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:12 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:12 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 10:09 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 09:39 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 07:55 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 07:43 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 07:40 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 07:39 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 07:00 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 06:12 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 06:01 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 04:19 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 03:20 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 02:47 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 02:46 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 02:12 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/11 01:16 https://github.com/google/kmsan.git master c525ca11ede3 5f818b4b .config console log report ci-upstream-kmsan-gce
2018/10/10 22:01 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 20:57 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 20:53 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 20:39 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 18:14 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 17:02 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:43 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:29 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:29 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:25 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:25 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:23 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:22 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:22 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:20 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:11 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 16:07 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
2018/10/10 15:08 https://github.com/google/kmsan.git master c525ca11ede3 5b11ac2c .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.