lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <0000000000006a0fe4056aa42a56@google.com> Date: Tue, 24 Apr 2018 20:50:02 -0700 From: syzbot <syzbot+4529a1346c0a67500ab9@...kaller.appspotmail.com> To: adobriyan@...il.com, akpm@...ux-foundation.org, gs051095@...il.com, lauraa@...eaurora.org, linux-kernel@...r.kernel.org, linux@...inikbrodowski.net, mingo@...nel.org, peterz@...radead.org, rostedt@...dmis.org, syzkaller-bugs@...glegroups.com, tglx@...utronix.de, thomas.lendacky@....com Subject: WARNING: kernel stack regs has bad value Hello, syzbot hit the following crash on upstream commit 24cac7009cb1b211f1c793ecb6a462c03dc35818 (Tue Apr 24 21:16:40 2018 +0000) Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=4529a1346c0a67500ab9 So far this crash happened 2 times on upstream. C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5707297623900160 syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=4674478248296448 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5189967202484224 Kernel config: https://syzkaller.appspot.com/x/.config?id=7043958930931867332 compiler: gcc (GCC) 8.0.1 20180413 (experimental) IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4529a1346c0a67500ab9@...kaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer. (ptrval): 0000000000440d69 (0x440d69) (ptrval): 0000000000000033 (0x33) (ptrval): 0000000000000246 (0x246) (ptrval): 00007ffca6a2bae8 (0x7ffca6a2bae8) (ptrval): 000000000000002b (0x2b) WARNING: kernel stack regs at (ptrval) in syz-executor366:4507 has bad 'bp' value (ptrval) ================================ WARNING: inconsistent lock state 4.17.0-rc2+ #15 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. sshd/4505 [HC1[1]:SC0[0]:HE0:SE1] takes: (ptrval) (fs_reclaim){?.+.}, at: fs_reclaim_acquire.part.82+0x0/0x30 mm/page_alloc.c:463 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 fs_reclaim_acquire.part.82+0x24/0x30 mm/page_alloc.c:3739 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3740 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x39/0x770 mm/slab.c:3661 kmalloc_node include/linux/slab.h:550 [inline] kzalloc_node include/linux/slab.h:712 [inline] alloc_worker+0xbd/0x2e0 kernel/workqueue.c:1704 init_rescuer.part.25+0x1f/0x190 kernel/workqueue.c:4000 init_rescuer kernel/workqueue.c:3997 [inline] workqueue_init+0x51f/0x7d0 kernel/workqueue.c:5732 kernel_init_freeable+0x2ad/0x58e init/main.c:1115 kernel_init+0x11/0x1b3 init/main.c:1053 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 irq event stamp: 688138 hardirqs last enabled at (688137): [<ffffffff816878c5>] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (688137): [<ffffffff816878c5>] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (688137): [<ffffffff816878c5>] ktime_get_ts64+0x405/0x510 kernel/time/timekeeping.c:850 hardirqs last disabled at (688138): [<ffffffff87800905>] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (688130): [<ffffffff85d601e2>] spin_unlock_bh include/linux/spinlock.h:355 [inline] softirqs last enabled at (688130): [<ffffffff85d601e2>] release_sock+0x1e2/0x2b0 net/core/sock.c:2861 softirqs last disabled at (688128): [<ffffffff85d60074>] spin_lock_bh include/linux/spinlock.h:315 [inline] softirqs last disabled at (688128): [<ffffffff85d60074>] release_sock+0x74/0x2b0 net/core/sock.c:2848 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(fs_reclaim); <Interrupt> lock(fs_reclaim); *** DEADLOCK *** no locks held by sshd/4505. stack backtrace: CPU: 0 PID: 4505 Comm: sshd Not tainted 4.17.0-rc2+ #15 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 print_usage_bug.cold.59+0x320/0x41a kernel/locking/lockdep.c:2542 valid_state kernel/locking/lockdep.c:2555 [inline] mark_lock_irq kernel/locking/lockdep.c:2749 [inline] mark_lock+0x1034/0x19e0 kernel/locking/lockdep.c:3147 mark_irqflags kernel/locking/lockdep.c:3022 [inline] __lock_acquire+0x1595/0x5140 kernel/locking/lockdep.c:3388 lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 fs_reclaim_acquire.part.82+0x24/0x30 mm/page_alloc.c:3739 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3740 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x45/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 </IRQ> RIP: 0010:__sanitizer_cov_trace_const_cmp8+0xf/0x20 kernel/kcov.c:194 RSP: 0018:ffff8801cf7f7a30 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd5 RAX: dffffc0000000000 RBX: 00007ffffffff000 RCX: ffffffff81bdcde5 RDX: 00007ffffffff000 RSI: ffffffffffffffff RDI: 0000000000000007 RBP: ffff8801cf7f7a30 R08: ffff8801b3c78600 R09: ffffed003b5c46c2 R10: 0000000000000003 R11: 0000000000000000 R12: ffffffff87f9ef20 R13: 000000000000000a R14: ffff8801cf7f7ba8 R15: 000055f253dfead0 __might_fault+0x55/0x1e0 mm/memory.c:4548 _copy_from_user+0x30/0x150 lib/usercopy.c:10 copy_from_user include/linux/uaccess.h:147 [inline] get_fd_set fs/select.c:367 [inline] core_sys_select+0x3e2/0xb60 fs/select.c:647 kern_select+0x1b7/0x250 fs/select.c:696 __do_sys_select fs/select.c:705 [inline] __se_sys_select fs/select.c:702 [inline] __x64_sys_select+0xbe/0x150 fs/select.c:702 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7337a51dd3 RSP: 002b:00007fffa0a9c698 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 00007fffa0a9c720 RCX: 00007f7337a51dd3 RDX: 000055f253dfeab0 RSI: 000055f253dfead0 RDI: 000000000000000c RBP: 000055f2539298dc R08: 00007fffa0a9c6c0 R09: 0101010101010101 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffa0a9c728 R13: 0000000000000000 R14: 00007fffa0a9c718 R15: 00007fffa0a9c71c BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 4505, name: sshd INFO: lockdep is turned off. irq event stamp: 688138 hardirqs last enabled at (688137): [<ffffffff816878c5>] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (688137): [<ffffffff816878c5>] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (688137): [<ffffffff816878c5>] ktime_get_ts64+0x405/0x510 kernel/time/timekeeping.c:850 hardirqs last disabled at (688138): [<ffffffff87800905>] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (688130): [<ffffffff85d601e2>] spin_unlock_bh include/linux/spinlock.h:355 [inline] softirqs last enabled at (688130): [<ffffffff85d601e2>] release_sock+0x1e2/0x2b0 net/core/sock.c:2861 softirqs last disabled at (688128): [<ffffffff85d60074>] spin_lock_bh include/linux/spinlock.h:315 [inline] softirqs last disabled at (688128): [<ffffffff85d60074>] release_sock+0x74/0x2b0 net/core/sock.c:2848 CPU: 0 PID: 4505 Comm: sshd Not tainted 4.17.0-rc2+ #15 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 ___might_sleep.cold.87+0x11f/0x13a kernel/sched/core.c:6188 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2b9/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 </IRQ> RIP: 0010:__sanitizer_cov_trace_const_cmp8+0xf/0x20 kernel/kcov.c:194 RSP: 0018:ffff8801cf7f7a30 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd5 RAX: dffffc0000000000 RBX: 00007ffffffff000 RCX: ffffffff81bdcde5 RDX: 00007ffffffff000 RSI: ffffffffffffffff RDI: 0000000000000007 RBP: ffff8801cf7f7a30 R08: ffff8801b3c78600 R09: ffffed003b5c46c2 R10: 0000000000000003 R11: 0000000000000000 R12: ffffffff87f9ef20 R13: 000000000000000a R14: ffff8801cf7f7ba8 R15: 000055f253dfead0 __might_fault+0x55/0x1e0 mm/memory.c:4548 _copy_from_user+0x30/0x150 lib/usercopy.c:10 copy_from_user include/linux/uaccess.h:147 [inline] get_fd_set fs/select.c:367 [inline] core_sys_select+0x3e2/0xb60 fs/select.c:647 kern_select+0x1b7/0x250 fs/select.c:696 __do_sys_select fs/select.c:705 [inline] __se_sys_select fs/select.c:702 [inline] __x64_sys_select+0xbe/0x150 fs/select.c:702 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7337a51dd3 RSP: 002b:00007fffa0a9c698 EFLAGS: 00000246 ORIG_RAX: 0000000000000017 RAX: ffffffffffffffda RBX: 00007fffa0a9c720 RCX: 00007f7337a51dd3 RDX: 000055f253dfeab0 RSI: 000055f253dfead0 RDI: 000000000000000c RBP: 000055f2539298dc R08: 00007fffa0a9c6c0 R09: 0101010101010101 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffa0a9c728 R13: 0000000000000000 R14: 00007fffa0a9c718 R15: 00007fffa0a9c71c random: crng init done --- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@...glegroups.com. syzbot will keep track of this bug report. If you forgot to add the Reported-by tag, once the fix for this bug is merged into any tree, please reply to this email with: #syz fix: exact-commit-title If you want to test a patch for this bug, please reply with: #syz test: git://repo/address.git branch and provide the patch inline or as an attachment. To mark this as a duplicate of another syzbot report, please reply with: #syz dup: exact-subject-of-another-report If it's a one-off invalid bug report, please reply with: #syz invalid Note: if the crash happens again, it will cause creation of a new bug report. Note: all commands must start from beginning of the line in the email body.
Powered by blists - more mailing lists