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===================================================== BUG: KMSAN: uninit-value in arch_atomic_fetch_add arch/x86/include/asm/atomic.h:184 [inline] BUG: KMSAN: uninit-value in atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:112 [inline] BUG: KMSAN: uninit-value in __refcount_add include/linux/refcount.h:193 [inline] BUG: KMSAN: uninit-value in __refcount_inc include/linux/refcount.h:250 [inline] BUG: KMSAN: uninit-value in refcount_inc include/linux/refcount.h:267 [inline] BUG: KMSAN: uninit-value in get_task_struct include/linux/sched/task.h:104 [inline] BUG: KMSAN: uninit-value in rwsem_mark_wake+0xb25/0xd60 kernel/locking/rwsem.c:514 arch_atomic_fetch_add arch/x86/include/asm/atomic.h:184 [inline] atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:112 [inline] __refcount_add include/linux/refcount.h:193 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] get_task_struct include/linux/sched/task.h:104 [inline] rwsem_mark_wake+0xb25/0xd60 kernel/locking/rwsem.c:514 rwsem_wake kernel/locking/rwsem.c:1177 [inline] __up_write kernel/locking/rwsem.c:1323 [inline] up_write+0x1b0/0x220 kernel/locking/rwsem.c:1570 anon_vma_unlock_write include/linux/rmap.h:121 [inline] split_huge_page_to_list+0x2165/0x2430 mm/huge_memory.c:2725 shrink_page_list+0x3538/0x8680 mm/vmscan.c:1587 shrink_inactive_list+0xb3d/0x17b0 mm/vmscan.c:2281 shrink_list mm/vmscan.c:2508 [inline] shrink_lruvec+0x7bc/0x17f0 mm/vmscan.c:2827 shrink_node_memcgs+0x5d3/0xc70 mm/vmscan.c:3016 shrink_node+0x176b/0x3590 mm/vmscan.c:3139 kswapd_shrink_node mm/vmscan.c:3878 [inline] balance_pgdat+0x15a0/0x2790 mm/vmscan.c:4069 kswapd+0x515/0x8b0 mm/vmscan.c:4328 kthread+0x66b/0x780 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 Local variable ----pmde.sroa.0@page_vma_mapped_walk created at: page_vma_mapped_walk+0xcf/0x35a0 mm/page_vma_mapped.c:164 page_referenced_one+0x771/0xda0 mm/rmap.c:783 ===================================================== Kernel panic - not syncing: panic_on_kmsan set ... CPU: 1 PID: 180 Comm: kswapd0 Tainted: G B 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1ff/0x28e lib/dump_stack.c:106 dump_stack+0x25/0x28 lib/dump_stack.c:113 panic+0x44f/0xdeb kernel/panic.c:232 kmsan_report+0x2ee/0x300 mm/kmsan/report.c:168 __msan_warning+0xa9/0xf0 mm/kmsan/instrumentation.c:199 arch_atomic_fetch_add arch/x86/include/asm/atomic.h:184 [inline] atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:112 [inline] __refcount_add include/linux/refcount.h:193 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] get_task_struct include/linux/sched/task.h:104 [inline] rwsem_mark_wake+0xb25/0xd60 kernel/locking/rwsem.c:514 rwsem_wake kernel/locking/rwsem.c:1177 [inline] __up_write kernel/locking/rwsem.c:1323 [inline] up_write+0x1b0/0x220 kernel/locking/rwsem.c:1570 anon_vma_unlock_write include/linux/rmap.h:121 [inline] split_huge_page_to_list+0x2165/0x2430 mm/huge_memory.c:2725 shrink_page_list+0x3538/0x8680 mm/vmscan.c:1587 shrink_inactive_list+0xb3d/0x17b0 mm/vmscan.c:2281 shrink_list mm/vmscan.c:2508 [inline] shrink_lruvec+0x7bc/0x17f0 mm/vmscan.c:2827 shrink_node_memcgs+0x5d3/0xc70 mm/vmscan.c:3016 shrink_node+0x176b/0x3590 mm/vmscan.c:3139 kswapd_shrink_node mm/vmscan.c:3878 [inline] balance_pgdat+0x15a0/0x2790 mm/vmscan.c:4069 kswapd+0x515/0x8b0 mm/vmscan.c:4328 kthread+0x66b/0x780 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 Kernel Offset: disabled Rebooting in 86400 seconds..
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/10/06 21:24 | https://github.com/google/kmsan.git master | c7f84f4e1147 | 62ee0987 | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/10/01 21:00 | https://github.com/google/kmsan.git master | 90f502f5d016 | cc80db95 | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/27 12:39 | https://github.com/google/kmsan.git master | cd2c05533838 | 78494d16 | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/12 02:05 | https://github.com/google/kmsan.git master | 43b4682e8b8e | 5ae8508a | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/07 00:10 | https://github.com/google/kmsan.git master | 43b4682e8b8e | 6ca60148 | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/03 17:27 | https://github.com/google/kmsan.git master | 43b4682e8b8e | f62a5829 | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/07/09 14:31 | https://github.com/google/kmsan.git master | 57b5797c8013 | 281e815f | .config | console log | report | info | ci-upstream-kmsan-gce | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/10/10 10:40 | https://github.com/google/kmsan.git master | c7f84f4e1147 | 838e7e2c | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/10/06 18:13 | https://github.com/google/kmsan.git master | c7f84f4e1147 | 0a63fd36 | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/10/03 01:45 | https://github.com/google/kmsan.git master | 90f502f5d016 | db0f5787 | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/21 10:00 | https://github.com/google/kmsan.git master | be0f0dd6a24b | af796c18 | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/21 00:46 | https://github.com/google/kmsan.git master | be0f0dd6a24b | af796c18 | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/09/07 13:41 | https://github.com/google/kmsan.git master | 43b4682e8b8e | 6ca60148 | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/07/14 10:13 | https://github.com/google/kmsan.git master | 57b5797c8013 | 484502bd | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/07/11 21:57 | https://github.com/google/kmsan.git master | 57b5797c8013 | 8f5a7b8c | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/07/10 19:20 | https://github.com/google/kmsan.git master | 57b5797c8013 | 8f5a7b8c | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake | |||
| 2021/06/27 06:40 | https://github.com/google/kmsan.git master | 57b5797c8013 | 9d2ab5df | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in rwsem_mark_wake |