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Biederman" , Jeff Xu , Roman Kisel , regressions@lists.linux.dev References: <202409160138.7E27F1A55@keescook> Content-Language: en-US From: Vegard Nossum Autocrypt: addr=vegard.nossum@oracle.com; keydata= xsFNBE4DTU8BEADTtNncvO6rZdvTSILZHHhUnJr9Vd7N/MSx8U9z0UkAtrcgP6HPsVdsvHeU C6IW7L629z7CSffCXNeF8xBYnGFhCh9L9fyX/nZ2gVw/0cVDCVMwVgeXo3m8AR1iSFYvO9vC Rcd1fN2y+vGsJaD4JoxhKBygUtPWqUKks88NYvqyIMKgIVNQ964Qh7M+qDGY+e/BaId1OK2Z 92jfTNE7EaIhJfHX8hW1yJKXWS54qBMqBstgLHPx8rv8AmRunsehso5nKxjtlYa/Zw5J1Uyw tSl+e3g/8bmCj+9+7Gj2swFlmZQwBVpVVrAR38jjEnjbKe9dQZ7c8mHHSFDflcAJlqRB2RT1 2JA3iX/XZ0AmcOvrk62S7B4I00+kOiY6fAERPptrA19n452Non7PD5VTe2iKsOIARIkf7LvD q2bjzB3r41A8twtB7DUEH8Db5tbiztwy2TGLD9ga+aJJwGdy9kR5kRORNLWvqMM6Bfe9+qbw cJ1NXTM1RFsgCgq7U6BMEXZNcsSg9Hbs6fqDPbbZXXxn7iA4TmOhyAqgY5KCa0wm68GxMhyG 5Q5dWfwX42/U/Zx5foyiORvEFxDBWNWc6iP1h+w8wDiiEO/UM7eH06bxRaxoMEYmcYNeEjk6 U6qnvjUiK8A35zDOoK67t9QD35aWlNBNQ2becGk9i8fuNJKqNQARAQABzShWZWdhcmQgTm9z c3VtIDx2ZWdhcmQubm9zc3VtQG9yYWNsZS5jb20+wsF4BBMBAgAiBQJX+8E+AhsDBgsJCAcD AgYVCAIJCgsEFgIDAQIeAQIXgAAKCRALzvTY/pi6WOTDD/46kJZT/yJsYVT44e+MWvWXnzi9 G7Tcqo1yNS5guN0d49B8ei9VvRzYpRsziaj1nAQJ8bgGJeXjNsMLMOZgx4b5OTsn8t2zIm2h midgIE8b3nS73uNs+9E1ktJPnHClGtTECEIIwQibpdCPYCS3lpmoAagezfcnkOqtTdgSvBg9 FxrxKpAclgoQFTKpUoI121tvYBHmaW9K5mBM3Ty16t7IPghnndgxab+liUUZQY0TZqDG8PPW SuRpiVJ9buszWQvm1MUJB/MNtj1rWHivsc1Xu559PYShvJiqJF1+NCNVUx3hfXEm3evTZ9Fm TQJBNaeROqCToGJHjdbOdtxeSdMhaiExuSnxghqcWN+76JNXAQLlVvYhHjQwzr4me4Efo1AN jinz1STmmeeAMYBfHPmBNjbyNMmYBH4ETbK9XKmtkLlEPuwTXu++7zKECgsgJJJ+kvAM1OOP VSOKCFouq1NiuJTDwIXQf/zc1ZB8ILoY/WljE+TO/ZNmRCZl8uj03FTUzLYhR7iWdyfG5gJ/ UfNDs/LBk596rEAtlwn0qlFUmj01B1MVeevV8JJ711S1jiRrPCXg90P3wmUUQzO0apfk1Np6 jZVlvsnbdK/1QZaYo1kdDPEVG+TQKOgdj4wbLMBV0rh82SYM1nc6YinoXWS3EuEfRLYTf8ad hbkmGzrwcc7BTQROA01PARAA5+ySdsvX2RzUF6aBwtohoGYV6m2P77wn4u9uNDMD9vfcqZxj y9QBMKGVADLY/zoL3TJx8CYS71YNz2AsFysTdfJjNgruZW7+j2ODTrHVTNWNSpMt5yRVW426 vN12gYjqK95c5uKNWGreP9W99T7Tj8yJe2CcoXYb6kO8hGvAHFlSYpJe+Plph5oD9llnYWpO XOzzuICFi4jfm0I0lvneQGd2aPK47JGHWewHn1Xk9/IwZW2InPYZat0kLlSDdiQmy/1Kv1UL PfzSjc9lkZqUJEXunpE0Mdp8LqowlL3rmgdoi1u4MNXurqWwPTXf1MSH537exgjqMp6tddfw cLAIcReIrKnN9g1+rdHfAUiHJYhEVbJACQSy9a4Z+CzUgb4RcwOQznGuzDXxnuTSuwMRxvyz XpDvuZazsAqB4e4p/m+42hAjE5lKBfE/p/WWewNzRRxRKvscoLcWCLg1qZ6N1pNJAh7BQdDK pvLaUv6zQkrlsvK2bicGXqzPVhjwX+rTghSuG3Sbsn2XdzABROgHd7ImsqzV6QQGw7eIlTD2 MT2b9gf0f76TaTgi0kZlLpQiAGVgjNhU2Aq3xIqOFTuiGnIQN0LV9/g6KqklzOGMBYf80Pgs kiObHTTzSvPIT+JcdIjPcKj2+HCbgbhmrYLtGJW8Bqp/I8w2aj2nVBa7l7UAEQEAAcLBXwQY AQIACQUCTgNNTwIbDAAKCRALzvTY/pi6WEWzD/4rWDeWc3P0DfOv23vWgx1qboMuFLxetair Utae7i60PQFIVj44xG997aMjohdxxzO9oBCTxUekn31aXzTBpUbRhStq78d1hQA5Rk7nJRS6 Nl6UtIcuLTE6Zznrq3QdQHtqwQCm1OM2F5w0ezOxbhHgt9WTrjJHact4AsN/8Aa2jmxJYrup aKmHqPxCVwxrrSTnx8ljisPaZWdzLQF5qmgmAqIRvX57xAuCu8O15XyZ054u73dIEYb2MBBl aUYwDv/4So2e2MEUymx7BF8rKDJ1LvwxKYT+X1gSdeiSambCzuEZ3SQWsVv3gn5TTCn3fHDt KTUL3zejji3s2V/gBXoHX7NnTNx6ZDP7It259tvWXKlUDd+spxUCF4i5fbkoQ9A0PNCwe01i N71y5pRS0WlFS06cvPs9lZbkAj4lDFgnOVQwmg6Smqi8gjD8rjP0GWKY24tDqd6sptX5cTDH pcH+LjiY61m43d8Rx+tqiUGJNUfXE/sEB+nkpL1PFWzdI1XZp4tlG6R7T9VLLf01SfeA2wgo 9BLDRko6MK5UxPwoYDHpYiyzzAdO24dlfTphNxNcDfspLCgOW1IQ3kGoTghU7CwDtV44x4rA jtz7znL1XTlXp6YJQ/FWWIJfsyFvr01kTmv+/QpnAG5/iLJ+0upU1blkWmVwaEo82BU6MrS2 8A== In-Reply-To: <202409160138.7E27F1A55@keescook> Content-Type: text/plain; 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Note there is a trivial > merge conflict between this and mm, which was resolved in -next with: > https://lore.kernel.org/linux-next/20240909171843.78c294da@canb.auug.org.au/ > > Thanks! > > -Kees > > The following changes since commit de9c2c66ad8e787abec7c9d7eff4f8c3cdd28aed: > > Linux 6.11-rc2 (2024-08-04 13:50:53 -0700) > > are available in the Git repository at: > > https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/execve-v6.12-rc1 > > for you to fetch changes up to 44f65d900698278a8451988abe0d5ca37fd46882: > > binfmt_elf: mseal address zero (2024-08-14 09:56:48 -0700) > > ---------------------------------------------------------------- > execve updates for v6.12-rc1 > > - binfmt_elf: Dump smaller VMAs first in ELF cores (Brian Mak) > > - binfmt_elf: mseal address zero (Jeff Xu) > > - binfmt_elf, coredump: Log the reason of the failed core dumps > (Roman Kisel) Hi, This last commit seems to introduce a regression for me, creating a completely unkillable process (but idle/0% CPU) that is stuck here: $ sudo cat /proc/2453/stack [<0>] do_exit+0xee/0xac0 [<0>] do_group_exit+0x34/0x90 [<0>] get_signal+0xa63/0xa70 [<0>] arch_do_signal_or_restart+0x42/0x260 [<0>] irqentry_exit_to_user_mode+0x1e0/0x250 [<0>] irqentry_exit+0x43/0x50 [<0>] exc_page_fault+0x94/0x1d0 [<0>] asm_exc_page_fault+0x27/0x30 $ cat /proc/2453/status ... State: I (idle) ... TracerPid: 0 ... Kthread: 0 VmPeak: 2240 kB VmSize: 2240 kB VmLck: 0 kB VmPin: 0 kB VmHWM: 568 kB VmRSS: 568 kB RssAnon: 136 kB RssFile: 432 kB RssShmem: 0 kB VmData: 420 kB VmStk: 132 kB VmExe: 1644 kB VmLib: 16 kB VmPTE: 60 kB VmSwap: 0 kB HugetlbPages: 0 kB CoreDumping: 1 THP_enabled: 1 untag_mask: 0xffffffffffffffff Threads: 1 SigQ: 0/62622 SigPnd: 0000000000000100 ShdPnd: 0000000000000100 SigBlk: 0000000000000000 SigIgn: 0000000000000000 SigCgt: 00000000000020db ... The process is so unkillable I can't even shut my laptop down without holding the power button for 5 seconds -- apart from that, everything works correctly. Bisection ended up here: # first bad commit: [fb97d2eb542faf19a8725afbd75cbc2518903210] binfmt_elf, coredump: Log the reason of the failed core dumps I have to admit I don't immediately see what's wrong with the patch. Vegard