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BUG: unable to handle kernel NULL pointer dereference in depot_fetch_stack

Status: closed as invalid on 2018/07/20 11:18
Subsystems: kernel
[Documentation on labels]
First crash: 2641d, last: 2641d

Sample crash report:
RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0010000000040200 R11: 0000000000000246 R12: 0000000000000014
R13: 00000000004c0950 R14: 00000000004d02c8 R15: 000000000000001d
list_add corruption. next->prev should be prev (ffff88021fffab30), but was ffff88021fffab28. (next=ffff88021fffab28).
BUG: unable to handle kernel NULL pointer dereference at 0000000000000f9c
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 2268 Comm: udevd Not tainted 4.17.0+ #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:depot_fetch_stack+0x18/0x40 lib/stackdepot.c:201
RSP: 0000:ffff8801cb29e868 EFLAGS: 00010006
RAX: 0000000000000000 RBX: 0000d419170cba00 RCX: ffff880000000001
RDX: ffff88021f2bf418 RSI: ffff8801cb29e8c8 RDI: 0000000000000f90
RBP: ffff8801cb29eb20 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff86575280 R12: 0000d419170cba00
R13: 0000ed41917ddd00 R14: 000000001f2cf540 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000f9c CR3: 000000000ac30000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
 llist_add_batch+0x142/0x1f0 lib/llist.c:44
 llist_add include/linux/llist.h:221 [inline]
 irq_work_queue+0x237/0x300 kernel/irq_work.c:101
 wake_up_klogd kernel/printk/printk.c:2902 [inline]
 console_unlock+0x1c39/0x1c80 kernel/printk/printk.c:2451
 vprintk_emit+0xd83/0x1060 kernel/printk/printk.c:1915
 vprintk_default+0x90/0xa0 kernel/printk/printk.c:1955
 vprintk_func+0x517/0x700 kernel/printk/printk_safe.c:379
 printk+0x1e4/0x210 kernel/printk/printk.c:1991
 __list_add_valid+0x275/0x450 lib/list_debug.c:23
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 __free_one_page+0x1483/0x1800 mm/page_alloc.c:876
 free_pcppages_bulk+0x1039/0x12e0 mm/page_alloc.c:1160
 free_unref_page_commit+0x358/0x4d0 mm/page_alloc.c:2778
 free_unref_page_list+0x75e/0x8b0 mm/page_alloc.c:2821
 release_pages+0x1637/0x1650 mm/swap.c:791
 free_pages_and_swap_cache+0x55b/0x580 mm/swap_state.c:322
 tlb_flush_mmu_free mm/memory.c:260 [inline]
 tlb_flush_mmu mm/memory.c:269 [inline]
 arch_tlb_finish_mmu mm/memory.c:284 [inline]
 tlb_finish_mmu+0x290/0x5c0 mm/memory.c:434
 exit_mmap+0x539/0x980 mm/mmap.c:3107
 __mmput+0x158/0x600 kernel/fork.c:962
 mmput+0xab/0xf0 kernel/fork.c:983
 exit_mm+0x6ed/0x7a0 kernel/exit.c:545
 do_exit+0xc12/0x3930 kernel/exit.c:854
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 get_signal+0x1405/0x1ec0 kernel/signal.c:2482
 do_signal+0xb8/0x1d20 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196
 retint_user+0x8/0x8
RIP: 0033:0x413f60
RSP: 002b:00007ffc054c5628 EFLAGS: 00010246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 00007ffc054c572c
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 00000000006254a0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000008 R11: 0000000000000004 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000001b96250
Code: 49 89 0e e9 92 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 89 f8 25 ff ff 1f 00 48 8b 04 c5 c0 ab 63 8b c1 ef 11 81 e7 f0 3f 00 00 <8b> 4c 38 0c 89 4e 04 89 0e 48 01 f8 48 83 c0 18 48 89 46 08 c7 
RIP: depot_fetch_stack+0x18/0x40 lib/stackdepot.c:201 RSP: ffff8801cb29e868
CR2: 0000000000000f9c
---[ end trace c76e82a75de7ec75 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/06/10 21:37 https://github.com/google/kmsan.git master d6c351f832e3 866118af .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.