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BUG: KMSAN: use-after-free in slab_alloc_node mm/slub.c:2762 [inline]
BUG: KMSAN: use-after-free in kmem_cache_alloc_node+0x5a9/0xe60 mm/slub.c:2836
CPU: 0 PID: 21798 Comm: blkid Not tainted 5.4.0-rc5+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x128/0x220 mm/kmsan/kmsan_report.c:108
 __msan_warning+0x73/0xe0 mm/kmsan/kmsan_instr.c:245
 slab_alloc_node mm/slub.c:2762 [inline]
 kmem_cache_alloc_node+0x5a9/0xe60 mm/slub.c:2836
 __alloc_skb+0x215/0xa10 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1050 [inline]
 new_skb drivers/block/aoe/aoecmd.c:67 [inline]
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x205/0xa80 drivers/block/aoe/aoecmd.c:1372
 discover_timer+0x86/0xa0 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1139
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:837
 </IRQ>
RIP: 0010:pfn_valid include/linux/mmzone.h:1353 [inline]
RIP: 0010:kmsan_virt_addr_valid mm/kmsan/kmsan_shadow.c:103 [inline]
RIP: 0010:kmsan_get_shadow_origin_ptr+0x184/0x4b0 mm/kmsan/kmsan_shadow.c:186
Code: 33 48 89 c2 48 c1 ea 22 48 8b 0c d1 48 85 c9 74 23 48 89 c2 48 c1 ea 1b 83 e2 7f 48 c1 e2 05 48 89 ce 48 01 d6 74 0d 48 8b 36 <40> f6 c6 02 0f 85 91 01 00 00 4c 89 f7 e8 7a db ff ff 48 85 c0 74
RSP: 0018:ffff88802d8cf6b8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000112e5a228 RBX: ffffffff902a2000 RCX: ffff88812fffb000
RDX: 0000000000000440 RSI: ffffea000000000f RDI: ffff888112e5a228
RBP: ffff88802d8cf6e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff813ee810 R12: ffff888112e5a228
R13: ffff888112e5a7e8 R14: ffff888112e5a228 R15: 0000000000000008
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
 arch_get_unmapped_area_topdown+0xd0/0xd60 arch/x86/kernel/sys_x86_64.c:179
 get_unmapped_area+0x2f7/0x530 mm/mmap.c:2229
 map_vdso+0x18b/0x5d0 arch/x86/entry/vdso/vma.c:156
 map_vdso_randomized arch/x86/entry/vdso/vma.c:249 [inline]
 arch_setup_additional_pages+0x276/0x2c0 arch/x86/entry/vdso/vma.c:294
 load_elf_binary+0x53e5/0x5f10 fs/binfmt_elf.c:1094
 search_binary_handler+0x2f4/0xac0 fs/exec.c:1659
 exec_binprm fs/exec.c:1702 [inline]
 __do_execve_file+0x2218/0x2e90 fs/exec.c:1822
 do_execveat_common fs/exec.c:1868 [inline]
 do_execve fs/exec.c:1885 [inline]
 __do_sys_execve fs/exec.c:1961 [inline]
 __se_sys_execve+0xec/0x110 fs/exec.c:1956
 __x64_sys_execve+0x4a/0x70 fs/exec.c:1956
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x7ff2a0b85207
Code: Bad RIP value.
RSP: 002b:00007fffdb0ae9b8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007ff2a0b85207
RDX: 0000000002021fd0 RSI: 00007fffdb0aeab0 RDI: 00007fffdb0afac0
RBP: 0000000000625500 R08: 000000000000304f R09: 000000000000304f
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000002021fd0
R13: 0000000000000007 R14: 0000000002012250 R15: 0000000000000005

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:151 [inline]
 kmsan_internal_chain_origin+0xbd/0x180 mm/kmsan/kmsan.c:319
 __msan_chain_origin+0x6b/0xd0 mm/kmsan/kmsan_instr.c:179
 ___slab_alloc+0x1dbc/0x1fb0 mm/slub.c:2636
 __slab_alloc mm/slub.c:2689 [inline]
 slab_alloc_node mm/slub.c:2763 [inline]
 kmem_cache_alloc_node+0xaf4/0xe60 mm/slub.c:2836
 __alloc_skb+0x215/0xa10 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1050 [inline]
 new_skb drivers/block/aoe/aoecmd.c:67 [inline]
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x205/0xa80 drivers/block/aoe/aoecmd.c:1372
 discover_timer+0x86/0xa0 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1139
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:837
 valid_section include/linux/mmzone.h:1289 [inline]
 pfn_valid include/linux/mmzone.h:1353 [inline]
 kmsan_virt_addr_valid mm/kmsan/kmsan_shadow.c:103 [inline]
 kmsan_get_shadow_origin_ptr+0x184/0x4b0 mm/kmsan/kmsan_shadow.c:186
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
 arch_get_unmapped_area_topdown+0xd0/0xd60 arch/x86/kernel/sys_x86_64.c:179
 get_unmapped_area+0x2f7/0x530 mm/mmap.c:2229
 map_vdso+0x18b/0x5d0 arch/x86/entry/vdso/vma.c:156
 map_vdso_randomized arch/x86/entry/vdso/vma.c:249 [inline]
 arch_setup_additional_pages+0x276/0x2c0 arch/x86/entry/vdso/vma.c:294
 load_elf_binary+0x53e5/0x5f10 fs/binfmt_elf.c:1094
 search_binary_handler+0x2f4/0xac0 fs/exec.c:1659
 exec_binprm fs/exec.c:1702 [inline]
 __do_execve_file+0x2218/0x2e90 fs/exec.c:1822
 do_execveat_common fs/exec.c:1868 [inline]
 do_execve fs/exec.c:1885 [inline]
 __do_sys_execve fs/exec.c:1961 [inline]
 __se_sys_execve+0xec/0x110 fs/exec.c:1956
 __x64_sys_execve+0x4a/0x70 fs/exec.c:1956
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:151 [inline]
 kmsan_internal_poison_shadow+0x60/0x120 mm/kmsan/kmsan.c:134
 kmsan_slab_free+0x8d/0xf0 mm/kmsan/kmsan_hooks.c:108
 slab_free_freelist_hook mm/slub.c:1473 [inline]
 slab_free mm/slub.c:3046 [inline]
 kmem_cache_free_bulk+0x3ad9/0x3f10 mm/slub.c:3171
 __kfree_skb_flush+0xb0/0x100 net/core/skbuff.c:862
 net_rx_action+0x1a5e/0x1aa0 net/core/dev.c:6483
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 run_ksoftirqd+0x25/0x40 kernel/softirq.c:607
 smpboot_thread_fn+0x4a3/0x990 kernel/smpboot.c:165
 kthread+0x4b5/0x4f0 kernel/kthread.c:256
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355
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