syzbot

IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
8021q: adding VLAN 0 to HW filter on device batadv0
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BUG: KMSAN: uninit-value in mld_force_mld_version net/ipv6/mcast.c:1173 [inline]
BUG: KMSAN: uninit-value in mld_in_v2_mode_only net/ipv6/mcast.c:1181 [inline]
BUG: KMSAN: uninit-value in mld_in_v1_mode net/ipv6/mcast.c:1191 [inline]
BUG: KMSAN: uninit-value in mld_send_initial_cr+0x1e4/0x4d0 net/ipv6/mcast.c:2084
CPU: 0 PID: 10694 Comm: syz-fuzzer Not tainted 5.0.0-rc1+ #7
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+0x173/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:600
 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313
 mld_force_mld_version net/ipv6/mcast.c:1173 [inline]
 mld_in_v2_mode_only net/ipv6/mcast.c:1181 [inline]
 mld_in_v1_mode net/ipv6/mcast.c:1191 [inline]
 mld_send_initial_cr+0x1e4/0x4d0 net/ipv6/mcast.c:2084
 mld_dad_timer_expire+0x4d/0x550 net/ipv6/mcast.c:2119
 call_timer_fn+0x285/0x600 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers+0xdb4/0x11d0 kernel/time/timer.c:1681
 run_timer_softirq+0x2e/0x50 kernel/time/timer.c:1694
 __do_softirq+0x53f/0x93a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x214/0x250 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:1064
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:814
 </IRQ>
RIP: 0010:my_virt_addr_valid mm/kmsan/kmsan.h:165 [inline]
RIP: 0010:kmsan_get_shadow_origin_ptr+0x75/0x440 mm/kmsan/kmsan.c:826
Code: 85 c0 0f 85 78 03 00 00 4c 89 f7 4c 89 fe 31 d2 e8 a0 c4 ff ff 84 c0 0f 84 cd 03 00 00 48 b8 00 00 00 00 80 77 00 00 4d 89 f5 <49> 81 ed 00 00 00 80 4c 89 6d d0 0f 83 5a 03 00 00 49 8d 04 06 4c
RSP: 0018:ffff88809d21e638 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000778000000000 RBX: ffffffff8c625000 RCX: 000000000000003c
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881097f095c
RBP: ffff88809d21e668 R08: 0000000000000002 R09: ffff88809d21e638
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881097f0988
R13: ffff8881097f095c R14: ffff8881097f095c R15: 0000000000000004
 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:54
 should_fail+0x133/0xb20 lib/fault-inject.c:111
 __should_fail_alloc_page mm/page_alloc.c:3158 [inline]
 should_fail_alloc_page+0x212/0x290 mm/page_alloc.c:3205
 prepare_alloc_pages mm/page_alloc.c:4482 [inline]
 __alloc_pages_nodemask+0x4a2/0x5e30 mm/page_alloc.c:4529
 alloc_pages_current+0x69d/0x9b0 mm/mempolicy.c:2106
 alloc_pages include/linux/gfp.h:511 [inline]
 __page_cache_alloc+0x95/0x320 mm/filemap.c:925
 __do_page_cache_readahead+0x46e/0x990 mm/readahead.c:196
 ondemand_readahead+0xe2f/0x1420 mm/internal.h:66
 page_cache_async_readahead+0x4f4/0x510 mm/readahead.c:574
 generic_file_buffered_read mm/filemap.c:2089 [inline]
 generic_file_read_iter+0xc94/0x4620 mm/filemap.c:2351
 ext4_file_read_iter+0x30a/0x520 include/linux/fs.h:772
 call_read_iter include/linux/fs.h:1856 [inline]
 new_sync_read fs/read_write.c:406 [inline]
 __vfs_read+0x94e/0xbf0 fs/read_write.c:418
 integrity_kernel_read+0x1e3/0x280 security/integrity/iint.c:204
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:356 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:385 [inline]
 ima_calc_file_hash+0x252a/0x2ca0 security/integrity/ima/ima_crypto.c:450
 ima_collect_measurement+0x48d/0x980 security/integrity/ima/ima_api.c:231
 process_measurement+0x1b37/0x2740 security/integrity/ima/ima_main.c:286
 ima_file_check+0x131/0x170 security/integrity/ima/ima_main.c:393
 do_last fs/namei.c:3422 [inline]
 path_openat+0x4af5/0x6b90 fs/namei.c:3534
binder_alloc: binder_alloc_mmap_handler: 10802 20001000-20004000 already mapped failed -16
 do_filp_open+0x2b8/0x710 fs/namei.c:3564
 do_sys_open+0x642/0xa30 fs/open.c:1063
binder: 10802:10810 got transaction to context manager from process owning it
binder: 10802:10810 transaction failed 29201/-22, size 0-0 line 2887
 __do_sys_openat fs/open.c:1090 [inline]
 __se_sys_openat+0xcb/0xe0 fs/open.c:1084
 __x64_sys_openat+0x56/0x70 fs/open.c:1084
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x47fd2a
Code: e8 bb 40 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48
RSP: 002b:000000c4201a77e8 EFLAGS: 00000212 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fd2a
RDX: 0000000000080002 RSI: 000000c42bd7ea00 RDI: ffffffffffffff9c
RBP: 000000c4201a7868 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001a4 R11: 0000000000000212 R12: 0000000000000000
R13: 00000000000000f5 R14: 0000000000000075 R15: 0000000000000004

Uninit was created at:
No stack
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