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BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbd1/0x12f0 kernel/profile.c:398
CPU: 0 PID: 15894 Comm: modprobe Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbd1/0x12f0 kernel/profile.c:398
 profile_hit include/linux/profile.h:64 [inline]
 profile_tick+0x215/0x220 kernel/profile.c:408
 tick_sched_handle kernel/time/tick-sched.c:227 [inline]
 tick_sched_timer+0x472/0x5b0 kernel/time/tick-sched.c:1369
 __run_hrtimer+0x48b/0xd20 kernel/time/hrtimer.c:1537
 __hrtimer_run_queues kernel/time/hrtimer.c:1601 [inline]
 hrtimer_interrupt+0x6e2/0x1b50 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x470 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0xc1/0xf0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650
RIP: 0010:_raw_spin_unlock_irqrestore+0x62/0x80 kernel/locking/spinlock.c:192
Code: 00 00 41 c6 04 24 00 81 e3 00 02 00 00 41 81 e7 00 02 00 00 48 85 db 74 0a f7 d3 44 21 fb 48 85 db 74 16 4d 85 ff 74 01 fb 5b <41> 5c 41 5e 41 5f 5d c3 e8 21 ca b6 f2 eb be 44 89 f7 e8 17 ca b6
RSP: 0018:ffff88812f78f5d0 EFLAGS: 00000206
RAX: ffff88812ef8fbf0 RBX: ffff8881294229c8 RCX: 000000012f38fbf0
RDX: ffff88812f38fbf0 RSI: 0000000000000250 RDI: ffff88812f78fbf0
RBP: ffff88812f78f5e8 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: 00000000ffffffff R12: ffff88812f78fbf0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __wake_up_common_lock kernel/sched/wait.c:140 [inline]
 __wake_up+0x1ef/0x250 kernel/sched/wait.c:157
 __d_lookup_done+0x3b7/0x600 fs/dcache.c:2683
 __d_add+0xa0b/0xfb0 fs/dcache.c:2701
 d_splice_alias+0x2c7/0xdd0 fs/dcache.c:3098
 ext4_lookup+0x1466/0x16b0 fs/ext4/namei.c:1735
 lookup_open fs/namei.c:3197 [inline]
 open_last_lookups fs/namei.c:3289 [inline]
 path_openat+0x2cbc/0x6be0 fs/namei.c:3495
 do_filp_open+0x2b8/0x710 fs/namei.c:3525
 do_sys_openat2+0x25f/0x830 fs/open.c:1187
 do_sys_open fs/open.c:1203 [inline]
 __do_sys_open fs/open.c:1211 [inline]
 __se_sys_open+0x271/0x2d0 fs/open.c:1207
 __x64_sys_open+0x4a/0x70 fs/open.c:1207
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f681ee171b7
Code: f3 c3 90 f7 d8 89 05 88 bf 20 00 b8 ff ff ff ff c3 66 90 c7 05 76 bf 20 00 16 00 00 00 b8 ff ff ff ff c3 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 59 bf 20 00 f7 d8 89 01 48 83
RSP: 002b:00007ffc4648c148 EFLAGS: 00000206 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000558d22600c81 RCX: 00007f681ee171b7
RDX: 0000000000000001 RSI: 0000000000080000 RDI: 00007f681ee1b988
RBP: ffffffffffffffff R08: 0000000000000000 R09: 0000000000000003
R10: 00007f681f023518 R11: 0000000000000206 R12: 00007f681f0230a0
R13: 0000000000000001 R14: 00007f681f022040 R15: 0000000000000000

Local variable ----f.i@ext4_search_dir created at:
 ext4_match fs/ext4/namei.c:1349 [inline]
 ext4_search_dir+0x22b/0x11e0 fs/ext4/namei.c:1395
 ext4_match fs/ext4/namei.c:1349 [inline]
 ext4_search_dir+0x22b/0x11e0 fs/ext4/namei.c:1395
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