BUG: unable to handle kernel paging request in __bio_release_pages

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syzbot

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Dec 31, 2021, 4:39:26 AM12/31/21
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Hello,

syzbot found the following issue on:

HEAD commit: ce1d37cb7697 usb: musb: dsps: Use platform_get_irq_byname(..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=174d7db3b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=5e23c32783e9df2
dashboard link: https://syzkaller.appspot.com/bug?extid=1e5d596ab29b1f16a42f
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
CC: [ax...@kernel.dk linux...@vger.kernel.org linux-...@vger.kernel.org linu...@vger.kernel.org]

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1e5d59...@syzkaller.appspotmail.com

BUG: unable to handle page fault for address: ffffea01002662c8
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffef067 P4D 23ffef067 PUD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:_compound_head include/linux/page-flags.h:198 [inline]
RIP: 0010:put_page include/linux/mm.h:1242 [inline]
RIP: 0010:__bio_release_pages+0x166/0x3a0 block/bio.c:1044
Code: e8 5f d3 4b ff 49 8d 6c 24 08 45 84 ff 0f 85 cb 00 00 00 e8 6c cf 4b ff 48 89 e8 48 c1 e8 03 42 80 3c 28 00 0f 85 e0 01 00 00 <49> 8b 6c 24 08 31 ff 48 89 eb 83 e3 01 48 89 de e8 d5 d1 4b ff 48
RSP: 0018:ffffc90000158c88 EFLAGS: 00010246
RAX: 1ffffd402004cc59 RBX: 0000000000001000 RCX: 0000000000000100
RDX: ffff8881002c1c00 RSI: ffffffff81f7bf94 RDI: 0000000000000003
RBP: ffffea01002662c8 R08: 0000000000001000 R09: 0000000000000000
R10: ffffffff81f7bf81 R11: 0000000000000000 R12: ffffea01002662c0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffea01002662c8 CR3: 000000011739f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
bio_release_pages include/linux/bio.h:435 [inline]
iomap_dio_bio_end_io+0x396/0x5f0 fs/iomap/direct-io.c:173
bio_endio+0x539/0x6a0 block/bio.c:1489
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x420/0x12e0 block/blk-mq.c:742
scsi_end_request+0x7a/0x980 drivers/scsi/scsi_lib.c:543
scsi_io_completion+0x177/0x16a0 drivers/scsi/scsi_lib.c:939
scsi_complete+0x11f/0x570 drivers/scsi/scsi_lib.c:1441
blk_complete_reqs+0xad/0xe0 block/blk-mq.c:892
__do_softirq+0x288/0x9a5 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x113/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
</IRQ>
<TASK>
asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:553
Code: 89 de e8 8d 7e 73 fb 84 db 75 ac e8 a4 7a 73 fb e8 cf b4 79 fb eb 0c e8 98 7a 73 fb 0f 00 2d 31 fa 79 00 e8 8c 7a 73 fb fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 07 7d 73 fb 48 85 db
RSP: 0018:ffffc900000efd18 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8881002c1c00 RSI: ffffffff85d01474 RDI: 0000000000000000
RBP: ffff8881003d2864 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8149c968 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8881003d2800 R14: ffff8881003d2864 R15: ffff88810a053004
acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:688
cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x3e8/0x590 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272
secondary_startup_64_no_verify+0xb0/0xbb
</TASK>
Modules linked in:
CR2: ffffea01002662c8
---[ end trace fceafeee8a12f317 ]---
RIP: 0010:_compound_head include/linux/page-flags.h:198 [inline]
RIP: 0010:put_page include/linux/mm.h:1242 [inline]
RIP: 0010:__bio_release_pages+0x166/0x3a0 block/bio.c:1044
Code: e8 5f d3 4b ff 49 8d 6c 24 08 45 84 ff 0f 85 cb 00 00 00 e8 6c cf 4b ff 48 89 e8 48 c1 e8 03 42 80 3c 28 00 0f 85 e0 01 00 00 <49> 8b 6c 24 08 31 ff 48 89 eb 83 e3 01 48 89 de e8 d5 d1 4b ff 48
RSP: 0018:ffffc90000158c88 EFLAGS: 00010246
RAX: 1ffffd402004cc59 RBX: 0000000000001000 RCX: 0000000000000100
RDX: ffff8881002c1c00 RSI: ffffffff81f7bf94 RDI: 0000000000000003
RBP: ffffea01002662c8 R08: 0000000000001000 R09: 0000000000000000
R10: ffffffff81f7bf81 R11: 0000000000000000 R12: ffffea01002662c0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffea01002662c8 CR3: 000000011739f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: e8 5f d3 4b ff callq 0xff4bd364
5: 49 8d 6c 24 08 lea 0x8(%r12),%rbp
a: 45 84 ff test %r15b,%r15b
d: 0f 85 cb 00 00 00 jne 0xde
13: e8 6c cf 4b ff callq 0xff4bcf84
18: 48 89 e8 mov %rbp,%rax
1b: 48 c1 e8 03 shr $0x3,%rax
1f: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
24: 0f 85 e0 01 00 00 jne 0x20a
* 2a: 49 8b 6c 24 08 mov 0x8(%r12),%rbp <-- trapping instruction
2f: 31 ff xor %edi,%edi
31: 48 89 eb mov %rbp,%rbx
34: 83 e3 01 and $0x1,%ebx
37: 48 89 de mov %rbx,%rsi
3a: e8 d5 d1 4b ff callq 0xff4bd214
3f: 48 rex.W


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syzbot

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Mar 27, 2022, 5:37:16 AM3/27/22
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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