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[syzbot] [mm?] KMSAN: uninit-value in shrinker_alloc | 0 (1) | 2024/01/02 13:55 |
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[syzbot] [mm?] KMSAN: uninit-value in shrinker_alloc | 0 (1) | 2024/01/02 13:55 |
RBP: 00007f43defc4120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f43de39bf80 R15: 00007f43de4bfa48 </TASK> ===================================================== BUG: KMSAN: uninit-value in shrinker_unit_free mm/shrinker.c:33 [inline] BUG: KMSAN: uninit-value in shrinker_unit_alloc mm/shrinker.c:52 [inline] BUG: KMSAN: uninit-value in expand_one_shrinker_info mm/shrinker.c:136 [inline] BUG: KMSAN: uninit-value in expand_shrinker_info mm/shrinker.c:165 [inline] BUG: KMSAN: uninit-value in shrinker_memcg_alloc mm/shrinker.c:227 [inline] BUG: KMSAN: uninit-value in shrinker_alloc+0xd7c/0x1100 mm/shrinker.c:697 shrinker_unit_free mm/shrinker.c:33 [inline] shrinker_unit_alloc mm/shrinker.c:52 [inline] expand_one_shrinker_info mm/shrinker.c:136 [inline] expand_shrinker_info mm/shrinker.c:165 [inline] shrinker_memcg_alloc mm/shrinker.c:227 [inline] shrinker_alloc+0xd7c/0x1100 mm/shrinker.c:697 alloc_super+0x9a6/0xf00 fs/super.c:386 sget_fc+0x36b/0xf80 fs/super.c:797 vfs_get_super fs/super.c:1333 [inline] get_tree_nodev+0x48/0x340 fs/super.c:1357 mqueue_get_tree+0xff/0x1c0 ipc/mqueue.c:435 vfs_get_tree+0xa5/0x520 fs/super.c:1771 fc_mount+0x33/0x110 fs/namespace.c:1114 mq_create_mount ipc/mqueue.c:485 [inline] mq_init_ns+0x51c/0x760 ipc/mqueue.c:1700 create_ipc_ns ipc/namespace.c:73 [inline] copy_ipcs+0x4b3/0xa40 ipc/namespace.c:112 create_new_namespaces+0x3ad/0xdb0 kernel/nsproxy.c:90 unshare_nsproxy_namespaces+0x17a/0x2b0 kernel/nsproxy.c:228 ksys_unshare+0x8fa/0x1340 kernel/fork.c:3433 __do_sys_unshare kernel/fork.c:3504 [inline] __se_sys_unshare kernel/fork.c:3502 [inline] __x64_sys_unshare+0x48/0x70 kernel/fork.c:3502 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc_node+0x11c/0x3c0 mm/slab_common.c:1014 kmalloc_node include/linux/slab.h:620 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:617 expand_one_shrinker_info mm/shrinker.c:129 [inline] expand_shrinker_info mm/shrinker.c:165 [inline] shrinker_memcg_alloc mm/shrinker.c:227 [inline] shrinker_alloc+0x606/0x1100 mm/shrinker.c:697 alloc_super+0x9a6/0xf00 fs/super.c:386 sget_fc+0x36b/0xf80 fs/super.c:797 vfs_get_super fs/super.c:1333 [inline] get_tree_nodev+0x48/0x340 fs/super.c:1357 mqueue_get_tree+0xff/0x1c0 ipc/mqueue.c:435 vfs_get_tree+0xa5/0x520 fs/super.c:1771 fc_mount+0x33/0x110 fs/namespace.c:1114 mq_create_mount ipc/mqueue.c:485 [inline] mq_init_ns+0x51c/0x760 ipc/mqueue.c:1700 create_ipc_ns ipc/namespace.c:73 [inline] copy_ipcs+0x4b3/0xa40 ipc/namespace.c:112 create_new_namespaces+0x3ad/0xdb0 kernel/nsproxy.c:90 unshare_nsproxy_namespaces+0x17a/0x2b0 kernel/nsproxy.c:228 ksys_unshare+0x8fa/0x1340 kernel/fork.c:3433 __do_sys_unshare kernel/fork.c:3504 [inline] __se_sys_unshare kernel/fork.c:3502 [inline] __x64_sys_unshare+0x48/0x70 kernel/fork.c:3502 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 1 PID: 5127 Comm: syz-executor.1 Not tainted 6.7.0-rc2-syzkaller-00265-gd2da77f431ac #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 =====================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/11/27 10:28 | upstream | d2da77f431ac | 5b429f39 | .config | console log | report | syz | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce | KMSAN: uninit-value in shrinker_alloc | ||
2023/11/27 08:33 | upstream | d2da77f431ac | 5b429f39 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kmsan-gce | KMSAN: uninit-value in shrinker_alloc |