First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled When I did hard offline test with hugetlb pages, below deadlock occurs: ====================================================== WARNING: possible circular locking dependency detected 6.8.0-11409-gf6cef5f8c37f #1 Not tainted ------------------------------------------------------ bash/46904 is trying to acquire lock: ffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60 but task is already holding lock: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (pcp_batch_high_lock){+.+.}-{3:3}: __mutex_lock+0x6c/0x770 page_alloc_cpu_online+0x3c/0x70 cpuhp_invoke_callback+0x397/0x5f0 __cpuhp_invoke_callback_range+0x71/0xe0 _cpu_up+0xeb/0x210 cpu_up+0x91/0xe0 cpuhp_bringup_mask+0x49/0xb0 bringup_nonboot_cpus+0xb7/0xe0 smp_init+0x25/0xa0 kernel_init_freeable+0x15f/0x3e0 kernel_init+0x15/0x1b0 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 -> #0 (cpu_hotplug_lock){++++}-{0:0}: __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(pcp_batch_high_lock); lock(cpu_hotplug_lock); lock(pcp_batch_high_lock); rlock(cpu_hotplug_lock); *** DEADLOCK *** 5 locks held by bash/46904: #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0 #1: ffff98f6c328e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0 #2: ffff98ef83b31890 (kn->active#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0 #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70 #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40 stack backtrace: CPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x68/0xa0 check_noncircular+0x129/0x140 __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fc862314887 Code: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 RSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887 RDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001 RBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c R13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00 In short, below scene breaks the ---truncated---
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | >=5.18<6.1.88 | |
Linux Linux kernel | >=6.2<6.6.29 | |
Linux Linux kernel | >=6.7<6.8.8 | |
Linux Linux kernel | =6.9-rc1 | |
Linux Linux kernel | =6.9-rc2 | |
Linux Linux kernel | =6.9-rc3 | |
Linux Linux kernel | =6.9-rc4 | |
Fedoraproject Fedora | =38 | |
Fedoraproject Fedora | =39 | |
Fedoraproject Fedora | =40 | |
ubuntu/linux | <6.8.0-38.38 | 6.8.0-38.38 |
ubuntu/linux | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws | <6.8.0-1011.12 | 6.8.0-1011.12 |
ubuntu/linux-aws | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws-fips | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-aws-hwe | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure | <6.8.0-1010.10 | 6.8.0-1010.10 |
ubuntu/linux-azure | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-4.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-fde | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-fde-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-azure-fips | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-bluefield | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-fips | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp | <6.8.0-1010.11 | 6.8.0-1010.11 |
ubuntu/linux-gcp | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp-4.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gcp-fips | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gke | <6.8.0-1006.9 | 6.8.0-1006.9 |
ubuntu/linux-gke | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gkeop | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-gkeop-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-hwe | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-hwe-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-hwe-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-hwe-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-ibm | <6.8.0-1008.8 | 6.8.0-1008.8 |
ubuntu/linux-ibm | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-ibm-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-ibm-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-intel | <6.8.0-1007.14 | 6.8.0-1007.14 |
ubuntu/linux-intel | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-intel-iot-realtime | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-intel-iotg | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-intel-iotg-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-iot | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-kvm | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-laptop | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-lowlatency | <6.8.0-38.38.1 | 6.8.0-38.38.1 |
ubuntu/linux-lowlatency | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-lowlatency-hwe-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-lowlatency-hwe-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-lowlatency-hwe-6.8 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-lts-xenial | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-nvidia | <6.8.0-1009.9 | 6.8.0-1009.9 |
ubuntu/linux-nvidia | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-nvidia-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-nvidia-6.8 | <6.8.0-1009.9~22.04.1 | 6.8.0-1009.9~22.04.1 |
ubuntu/linux-nvidia-6.8 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-nvidia-lowlatency | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oem-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oem-6.8 | <6.8.0-1008.8 | 6.8.0-1008.8 |
ubuntu/linux-oem-6.8 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oracle | <6.8.0-1008.8 | 6.8.0-1008.8 |
ubuntu/linux-oracle | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oracle-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oracle-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-oracle-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-raspi | <6.8.0-1007.7 | 6.8.0-1007.7 |
ubuntu/linux-raspi | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-raspi-5.4 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-raspi-realtime | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-realtime | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-riscv | <6.8.0-38.38.1 | 6.8.0-38.38.1 |
ubuntu/linux-riscv | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-riscv-5.15 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-riscv-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-riscv-6.8 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-starfive | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-starfive-6.5 | <6.9~<6.8.8 | 6.9~ 6.8.8 |
ubuntu/linux-xilinx-zynqmp | <6.9~<6.8.8 | 6.9~ 6.8.8 |
debian/linux | 5.10.223-1 6.1.106-3 6.1.99-1 6.10.6-1 6.10.7-1 |
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