WARNING in __ieee80211_beacon_get (3)
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syzbot
Oct 16, 2021, 12:09:29 PM10/16/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=110a5034b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=d5924d5cffddfccab68e
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
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+d5924d...@syzkaller.appspotmail.com
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 4953 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
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+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RSP: 0018:ffff8880ba107c18 EFLAGS: 00010206
RAX: ffff8880a8548080 RBX: ffff88803c0e1c78 RCX: ffffffff87a2e6ba
RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001
RBP: ffff88803c059b40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880af808440 R14: 0000000000000000 R15: ffff8880ba107d60
ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:deref_stack_reg+0x4d/0x1d0 arch/x86/kernel/unwind_orc.c:330
Code: 08 b3 8a b5 41 48 8d 5c 24 08 48 c7 44 24 10 35 af b6 89 48 c1 eb 03 48 c7 44 24 18 20 7f 29 81 48 8d 14 03 c7 02 f1 f1 f1 f1 <c7> 42 04 00 f3 f3 f3 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4c
RSP: 0018:ffff8880b5397398 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11016a72e74 RCX: ffff8880b5397f28
RDX: ffffed1016a72e74 RSI: ffff8880b5397f50 RDI: ffff8880b5397560
RBP: ffff8880b5397f50 R08: ffffffff8b8cd908 R09: ffffffff8b8cd904
R10: ffff8880b53975bf R11: 0000000000074071 R12: ffff8880b5397560
R13: ffff8880b53975a8 R14: ffff8880b5397560 R15: ffffffff8b8cd904
unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502
__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc mm/slab.c:3397 [inline]
kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2090 [inline]
add_free_nid.isra.0+0xa1/0x700 fs/f2fs/node.c:2087
scan_nat_page fs/f2fs/node.c:2186 [inline]
__f2fs_build_free_nids+0x421/0x1020 fs/f2fs/node.c:2289
f2fs_build_free_nids fs/f2fs/node.c:2328 [inline]
f2fs_build_node_manager+0x24c5/0x31d0 fs/f2fs/node.c:3055
f2fs_fill_super+0x31fd/0x7050 fs/f2fs/super.c:3022
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2492 [inline]
do_mount+0x115c/0x2f50 fs/namespace.c:2822
ksys_mount+0xcf/0x130 fs/namespace.c:3038
__do_sys_mount fs/namespace.c:3052 [inline]
__se_sys_mount fs/namespace.c:3049 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3049
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f36c61f1f6a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36c3765fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f36c61f1f6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f36c3766000
RBP: 00007f36c3766040 R08: 00007f36c3766040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f36c3766000 R15: 0000000020014900
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
0: 08 b3 8a b5 41 48 or %dh,0x4841b58a(%rbx)
6: 8d 5c 24 08 lea 0x8(%rsp),%ebx
a: 48 c7 44 24 10 35 af movq $0xffffffff89b6af35,0x10(%rsp)
11: b6 89
13: 48 c1 eb 03 shr $0x3,%rbx
17: 48 c7 44 24 18 20 7f movq $0xffffffff81297f20,0x18(%rsp)
1e: 29 81
20: 48 8d 14 03 lea (%rbx,%rax,1),%rdx
24: c7 02 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rdx)
* 2a: c7 42 04 00 f3 f3 f3 movl $0xf3f3f300,0x4(%rdx) <-- trapping instruction
31: 48 89 fa mov %rdi,%rdx
34: 65 48 8b 0c 25 28 00 mov %gs:0x28,%rcx
3b: 00 00
3d: 48 rex.W
3e: 89 .byte 0x89
3f: 4c rex.WR
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=110a5034b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=d5924d5cffddfccab68e
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
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+d5924d...@syzkaller.appspotmail.com
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
WARNING: CPU: 1 PID: 4953 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 4953 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
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+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RSP: 0018:ffff8880ba107c18 EFLAGS: 00010206
RAX: ffff8880a8548080 RBX: ffff88803c0e1c78 RCX: ffffffff87a2e6ba
RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001
RBP: ffff88803c059b40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880af808440 R14: 0000000000000000 R15: ffff8880ba107d60
ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:deref_stack_reg+0x4d/0x1d0 arch/x86/kernel/unwind_orc.c:330
Code: 08 b3 8a b5 41 48 8d 5c 24 08 48 c7 44 24 10 35 af b6 89 48 c1 eb 03 48 c7 44 24 18 20 7f 29 81 48 8d 14 03 c7 02 f1 f1 f1 f1 <c7> 42 04 00 f3 f3 f3 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4c
RSP: 0018:ffff8880b5397398 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: 1ffff11016a72e74 RCX: ffff8880b5397f28
RDX: ffffed1016a72e74 RSI: ffff8880b5397f50 RDI: ffff8880b5397560
RBP: ffff8880b5397f50 R08: ffffffff8b8cd908 R09: ffffffff8b8cd904
R10: ffff8880b53975bf R11: 0000000000074071 R12: ffff8880b5397560
R13: ffff8880b53975a8 R14: ffff8880b5397560 R15: ffffffff8b8cd904
unwind_next_frame+0x9fc/0x1400 arch/x86/kernel/unwind_orc.c:502
__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc mm/slab.c:3397 [inline]
kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2090 [inline]
add_free_nid.isra.0+0xa1/0x700 fs/f2fs/node.c:2087
scan_nat_page fs/f2fs/node.c:2186 [inline]
__f2fs_build_free_nids+0x421/0x1020 fs/f2fs/node.c:2289
f2fs_build_free_nids fs/f2fs/node.c:2328 [inline]
f2fs_build_node_manager+0x24c5/0x31d0 fs/f2fs/node.c:3055
f2fs_fill_super+0x31fd/0x7050 fs/f2fs/super.c:3022
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2492 [inline]
do_mount+0x115c/0x2f50 fs/namespace.c:2822
ksys_mount+0xcf/0x130 fs/namespace.c:3038
__do_sys_mount fs/namespace.c:3052 [inline]
__se_sys_mount fs/namespace.c:3049 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3049
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f36c61f1f6a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36c3765fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f36c61f1f6a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f36c3766000
RBP: 00007f36c3766040 R08: 00007f36c3766040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f36c3766000 R15: 0000000020014900
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
0: 08 b3 8a b5 41 48 or %dh,0x4841b58a(%rbx)
6: 8d 5c 24 08 lea 0x8(%rsp),%ebx
a: 48 c7 44 24 10 35 af movq $0xffffffff89b6af35,0x10(%rsp)
11: b6 89
13: 48 c1 eb 03 shr $0x3,%rbx
17: 48 c7 44 24 18 20 7f movq $0xffffffff81297f20,0x18(%rsp)
1e: 29 81
20: 48 8d 14 03 lea (%rbx,%rax,1),%rdx
24: c7 02 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rdx)
* 2a: c7 42 04 00 f3 f3 f3 movl $0xf3f3f300,0x4(%rdx) <-- trapping instruction
31: 48 89 fa mov %rdi,%rdx
34: 65 48 8b 0c 25 28 00 mov %gs:0x28,%rcx
3b: 00 00
3d: 48 rex.W
3e: 89 .byte 0x89
3f: 4c rex.WR
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Apr 9, 2022, 1:57:30 AM4/9/22
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14e86bd8f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e86bd8f00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d5924d...@syzkaller.appspotmail.com
syz-executor509 (9487) used greatest stack depth: 22920 bytes left
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
RAX: ffff888094c042c0 RBX: ffff8880a116ec78 RCX: ffffffff87a2e6ba
RIP: 0010:_raw_spin_unlock_irq+0x50/0x80 kernel/locking/spinlock.c:192
Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 01 31 d8 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 26 1b 28 f9 65 8b 05 9f 8d e8 77 85 c0 74 02 5d
RSP: 0018:ffff8880b05cfb10 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3053 RBX: ffff888094c042c0 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff888094c04b44
RBP: ffff8880ba02b0c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ba02b0c0
R13: ffff88809bcd0380 R14: 0000000000000000 R15: 0000000000000001
finish_lock_switch kernel/sched/core.c:2578 [inline]
finish_task_switch+0x146/0x760 kernel/sched/core.c:2678
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x88f/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x264/0x6c0 kernel/time/hrtimer.c:1755
hrtimer_nanosleep+0x24d/0x570 kernel/time/hrtimer.c:1809
common_nsleep+0x23/0x30 kernel/time/posix-timers.c:1204
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1231 [inline]
__se_sys_clock_nanosleep+0x261/0x360 kernel/time/posix-timers.c:1209
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fb91516931a
Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3
RSP: 002b:00007ffdf8289bc0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007ffdf8289ca0 RCX: 00007fb91516931a
RDX: 00007ffdf8289c00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: 00007ffdf8394000 R09: 0000009ad8a0356c
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 0000000000092bbf R14: 00007ffdf8289c90 R15: 00007ffdf8289c5c
0: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
7: fc ff df
a: 48 c1 e8 03 shr $0x3,%rax
e: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
12: 75 31 jne 0x45
14: 48 83 3d 01 31 d8 01 cmpq $0x0,0x1d83101(%rip) # 0x1d8311d
1b: 00
1c: 74 25 je 0x43
1e: fb sti
1f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
* 25: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2a: e8 26 1b 28 f9 callq 0xf9281b55
2f: 65 8b 05 9f 8d e8 77 mov %gs:0x77e88d9f(%rip),%eax # 0x77e88dd5
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=d5924d5cffddfccab68e
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1726e360f00000
dashboard link: https://syzkaller.appspot.com/bug?extid=d5924d5cffddfccab68e
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e86bd8f00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d5924d...@syzkaller.appspotmail.com
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
WARNING: CPU: 0 PID: 8100 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8100 Comm: syz-executor509 Not tainted 4.19.211-syzkaller #0
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+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RSP: 0018:ffff8880ba007c18 EFLAGS: 00010206
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline]
RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347
Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4
RAX: ffff888094c042c0 RBX: ffff8880a116ec78 RCX: ffffffff87a2e6ba
RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001
RBP: ffff8880a1af17c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880a57f1500 R14: 0000000000000000 R15: ffff8880ba007d60
ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
ieee80211_beacon_get include/net/mac80211.h:4484 [inline]
mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577
__iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614
ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650
mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615
__tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601
tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:_raw_spin_unlock_irq+0x50/0x80 kernel/locking/spinlock.c:192
Code: c0 98 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 31 48 83 3d 01 31 d8 01 00 74 25 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 26 1b 28 f9 65 8b 05 9f 8d e8 77 85 c0 74 02 5d
RSP: 0018:ffff8880b05cfb10 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3053 RBX: ffff888094c042c0 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff888094c04b44
RBP: ffff8880ba02b0c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ba02b0c0
R13: ffff88809bcd0380 R14: 0000000000000000 R15: 0000000000000001
finish_lock_switch kernel/sched/core.c:2578 [inline]
finish_task_switch+0x146/0x760 kernel/sched/core.c:2678
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x88f/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x264/0x6c0 kernel/time/hrtimer.c:1755
hrtimer_nanosleep+0x24d/0x570 kernel/time/hrtimer.c:1809
common_nsleep+0x23/0x30 kernel/time/posix-timers.c:1204
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1231 [inline]
__se_sys_clock_nanosleep+0x261/0x360 kernel/time/posix-timers.c:1209
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fb91516931a
Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3
RSP: 002b:00007ffdf8289bc0 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007ffdf8289ca0 RCX: 00007fb91516931a
RDX: 00007ffdf8289c00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: 00007ffdf8394000 R09: 0000009ad8a0356c
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000f4240
R13: 0000000000092bbf R14: 00007ffdf8289c90 R15: 00007ffdf8289c5c
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess), 5 bytes skipped:
Rebooting in 86400 seconds..
----------------
0: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
7: fc ff df
a: 48 c1 e8 03 shr $0x3,%rax
e: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
12: 75 31 jne 0x45
14: 48 83 3d 01 31 d8 01 cmpq $0x0,0x1d83101(%rip) # 0x1d8311d
1b: 00
1c: 74 25 je 0x43
1e: fb sti
1f: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
* 25: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2a: e8 26 1b 28 f9 callq 0xf9281b55
2f: 65 8b 05 9f 8d e8 77 mov %gs:0x77e88d9f(%rip),%eax # 0x77e88dd5
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
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