BUG: stack guard page was hit at 0000000081fa4d7f (stack is 000000008ed0f837..0000000020f72952) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 23783 Comm: syz-executor.5 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:trace_hardirqs_off+0x8/0x210 kernel/trace/trace_preemptirq.c:76 Code: 1e 45 3a 00 e9 33 ff ff ff 48 89 df e8 11 45 3a 00 e9 fe fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 53 f3 3e fa ff 48 8b 7c 24 28 e8 09 90 7a 06 65 8b 1d 62 f9 88 7e RSP: 0018:ffffc900181e8000 EFLAGS: 00010046 RAX: ffff88803dad05c0 RBX: 0000000000000000 RCX: ffffc900139ec000 RDX: 0000000000040000 RSI: ffffffff81341b7f RDI: ffffc900181e8068 RBP: ffffc900181e8068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f5570b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffc900181e7ff8 CR3: 000000003af1b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: irqentry_enter+0x1d/0x50 kernel/entry/common.c:342 exc_page_fault+0x49/0x190 arch/x86/mm/fault.c:1479 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e8110 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e8118 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e8400 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e8408 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e86f0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e86f8 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e89e0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e89e8 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e8cd0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e8cd8 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e8fc0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e8fc8 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e92b0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e92b8 R08: 0000000000000000 R09: ffffffff8ab26b8f R10: fffffbfff1564d71 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:772 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3f0/0xae0 kernel/locking/lockdep.c:4980 down_read_trylock kernel/locking/rwsem.c:1520 [inline] down_read_trylock+0x193/0x350 kernel/locking/rwsem.c:1515 mmap_read_trylock include/linux/mmap_lock.h:56 [inline] do_user_addr_fault+0x25e/0xbf0 arch/x86/mm/fault.c:1313 handle_page_fault arch/x86/mm/fault.c:1429 [inline] exc_page_fault+0xa8/0x190 arch/x86/mm/fault.c:1482 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538 RIP: 0010:preempt_schedule_notrace_thunk+0x5/0x31 arch/x86/entry/thunk_64.S:41 Code: 00 48 8d a0 58 ff ff ff e8 e9 04 46 00 55 48 89 e5 57 56 52 51 50 41 50 41 51 41 52 41 53 e8 a3 d5 f5 06 eb 18 55 48 89 e5 57 <00> 70 07 00 00 77 00 00 41 52 41 53 e8 eb d5 f5 06 eb 00 41 5b 41 RSP: 0018:ffffc900181e95a0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff1308b20 RDX: dffffc0000000000 RSI: ffffffff89bd6980 RDI: 0000000000000082 RBP: ffffc900181e95a8 R08: Lost 683 message(s)! ---[ end trace 02af37d385ae66aa ]--- RIP: 0010:trace_hardirqs_off+0x8/0x210 kernel/trace/trace_preemptirq.c:76 Code: 1e 45 3a 00 e9 33 ff ff ff 48 89 df e8 11 45 3a 00 e9 fe fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 53 f3 3e fa ff 48 8b 7c 24 28 e8 09 90 7a 06 65 8b 1d 62 f9 88 7e RSP: 0018:ffffc900181e8000 EFLAGS: 00010046 RAX: ffff88803dad05c0 RBX: 0000000000000000 RCX: ffffc900139ec000 RDX: 0000000000040000 RSI: ffffffff81341b7f RDI: ffffc900181e8068 RBP: ffffc900181e8068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f5570b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffc900181e7ff8 CR3: 000000003af1b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400