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KMSAN: uninit-value in profile_hits

Status: closed as invalid on 2021/07/19 13:31
Subsystems: kernel
[Documentation on labels]
First crash: 1076d, last: 1023d
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in profile_hits (2) kernel 4 886d 897d 0/26 auto-closed as invalid on 2022/03/03 02:13
upstream KMSAN: uninit-value in profile_hits (3) kernel C 423 4h41m 133d 0/26 upstream: reported C repro on 2023/12/26 15:59
android-54 KASAN: user-memory-access Write in profile_hits (2) 1 575d 575d 0/2 auto-obsoleted due to no activity on 2023/02/07 02:54
android-54 KASAN: user-memory-access Write in profile_hits 1 850d 850d 0/2 auto-closed as invalid on 2022/05/08 09:48

Sample crash report:
=====================================================
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: 23 Comm: kworker/u4:1 Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbde/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbde/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbeb/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbeb/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc0e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc0e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc1b/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc1b/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc2b/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc2b/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc51/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc51/0x12f0 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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc5e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc5e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc6e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc6e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:312 [inline]
BUG: KMSAN: uninit-value in profile_hits+0x1275/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:312 [inline]
 profile_hits+0x1275/0x12f0 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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:313 [inline]
BUG: KMSAN: uninit-value in profile_hits+0x1295/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:313 [inline]
 profile_hits+0x1295/0x12f0 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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
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: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbde/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbde/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbeb/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbeb/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc0e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc0e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc1b/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc1b/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc2b/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc2b/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc51/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc51/0x12f0 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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc5e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc5e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc6e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc6e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289
 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147
 do_profile_hits kernel/profile.c:312 [inline]
 profile_hits+0x1285/0x12f0 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
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:309 [inline]
BUG: KMSAN: uninit-value in profile_hits+0x1252/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:309 [inline]
 profile_hits+0x1252/0x12f0 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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
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: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbde/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbde/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xbeb/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xbeb/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc0e/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc0e/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x1567/0x3690 fs/fs-writeback.c:1732
 __writeback_inodes_wb+0x1d6/0x860 fs/fs-writeback.c:1801
 wb_writeback+0x7d1/0x1120 fs/fs-writeback.c:1907
 wb_check_old_data_flush fs/fs-writeback.c:2009 [inline]
 wb_do_writeback+0x10bf/0x1450 fs/fs-writeback.c:2062
 wb_workfn+0x214/0xab0 fs/fs-writeback.c:2091
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----newes@ext4_es_insert_extent created at:
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
 ext4_es_insert_extent+0xb7/0x6610 fs/ext4/extents_status.c:819
=====================================================
=====================================================
BUG: KMSAN: uninit-value in do_profile_hits kernel/profile.c:308 [inline]
BUG: KMSAN: uninit-value in profile_hits+0xc1b/0x12f0 kernel/profile.c:398
CPU: 0 PID: 23 Comm: kworker/u4:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
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:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 do_profile_hits kernel/profile.c:308 [inline]
 profile_hits+0xc1b/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 11 ca b6 f2 eb be 44 89 f7 e8 07 ca b6
RSP: 0018:ffff8881024ceee8 EFLAGS: 00000206
RAX: ffff88812461d0b8 RBX: 0000000000000000 RCX: 0000000124a1d0b8
RDX: ffff888124a1d0b8 RSI: 0000000000000240 RDI: ffff888124e1d0b8
RBP: ffff8881024cef00 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000009139edcd R11: ffff8881024c1f40 R12: ffff888124e1d0b8
R13: ffffea0005c431f0 R14: 0000000000000000 R15: 0000000000000200
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 __test_set_page_writeback+0xe32/0x1040 mm/page-writeback.c:2803
 ext4_bio_write_page+0x31f/0x3040 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2350 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2489 [inline]
 ext4_writepages+0x3401/0x6870 fs/ext4/inode.c:2802
 do_writepages+0x15f/0x420 mm/page-writeback.c:2352
 __writeback_single_inode+0x149/0xca0 fs/fs-writeback.c:1467

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/05/27 03:39 https://github.com/google/kmsan.git master 6099c9da2f7d 858ea628 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/19 11:09 https://github.com/google/kmsan.git master a0f3a2c4404f e6a17580 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/19 08:22 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/18 22:35 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/18 14:14 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/18 11:04 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/18 02:36 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/17 20:10 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/17 16:38 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/13 19:13 https://github.com/google/kmsan.git master 57b5797c8013 fa0594c3 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/10 12:42 https://github.com/google/kmsan.git master 57b5797c8013 8f5a7b8c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/02 22:25 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/25 08:38 https://github.com/google/kmsan.git master a520ce29b172 0edbbe31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/25 08:06 https://github.com/google/kmsan.git master a520ce29b172 0edbbe31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/25 07:35 https://github.com/google/kmsan.git master a520ce29b172 0edbbe31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/12 21:34 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/12 21:23 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/11 20:22 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/09 08:38 https://github.com/google/kmsan.git master 6099c9da2f7d 5c2fe346 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/06 08:06 https://github.com/google/kmsan.git master 6099c9da2f7d 500c2339 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/06/03 07:41 https://github.com/google/kmsan.git master 6099c9da2f7d 0740de69 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/05/27 02:30 https://github.com/google/kmsan.git master 6099c9da2f7d 858ea628 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in profile_hits
2021/07/17 17:36 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/17 16:33 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/16 00:53 https://github.com/google/kmsan.git master 57b5797c8013 f115ae98 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/15 17:07 https://github.com/google/kmsan.git master 57b5797c8013 b9a2f64e .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/15 03:34 https://github.com/google/kmsan.git master 57b5797c8013 94e0b707 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/12 01:40 https://github.com/google/kmsan.git master 57b5797c8013 8f5a7b8c .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/10 12:50 https://github.com/google/kmsan.git master 57b5797c8013 8f5a7b8c .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/04 09:50 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/07/04 09:47 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/25 08:17 https://github.com/google/kmsan.git master a520ce29b172 0edbbe31 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/21 04:43 https://github.com/google/kmsan.git master 6a6a67f21dec aba2b2fb .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/12 21:49 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/12 21:48 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/11 20:16 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/10 02:09 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/09 18:38 https://github.com/google/kmsan.git master 6099c9da2f7d 84fe5d96 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/09 17:49 https://github.com/google/kmsan.git master 6099c9da2f7d 84fe5d96 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/09 09:28 https://github.com/google/kmsan.git master 6099c9da2f7d 5c2fe346 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/06 08:07 https://github.com/google/kmsan.git master 6099c9da2f7d 500c2339 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/06 08:07 https://github.com/google/kmsan.git master 6099c9da2f7d 500c2339 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
2021/06/03 07:42 https://github.com/google/kmsan.git master 6099c9da2f7d 0740de69 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in profile_hits
* Struck through repros no longer work on HEAD.