bisecting fixing commit since 418baf2c28f3473039f2f7377760bd8f6897ae18 building syzkaller on 878fb17aeaf5e85e8be85fb4ed20890529dfb354 testing commit 418baf2c28f3473039f2f7377760bd8f6897ae18 with gcc (GCC) 8.1.0 kernel signature: a9236b465490704eeeecf6ba415eefc0312ab5774434aff52a952eb252f6be11 run #0: crashed: WARNING in drv_remove_interface run #1: crashed: WARNING in drv_remove_interface run #2: crashed: WARNING in drv_remove_interface run #3: crashed: WARNING in drv_remove_interface run #4: crashed: WARNING in drv_remove_interface run #5: crashed: WARNING in drv_remove_interface run #6: crashed: WARNING in drv_remove_interface run #7: crashed: WARNING in drv_remove_interface run #8: crashed: WARNING in drv_remove_interface run #9: boot failed: can't ssh into the instance testing current HEAD fe75a21824e78405b8d812421974524092250c63 testing commit fe75a21824e78405b8d812421974524092250c63 with gcc (GCC) 8.1.0 kernel signature: 789a164b7d1a8396e16d0c53f462e8a329382bc84c7934189cf69f40a29cb418 all runs: crashed: WARNING in drv_remove_interface revisions tested: 2, total time: 23m11.394565448s (build: 9m29.321485833s, test: 13m6.954809971s) the crash still happens on HEAD commit msg: Merge tag 'for-5.11/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm crash: WARNING in drv_remove_interface ------------[ cut here ]------------ wlan0: Failed check-sdata-in-driver check, flags: 0x4 WARNING: CPU: 1 PID: 10547 at net/mac80211/driver-ops.c:97 drv_remove_interface+0x214/0x2a0 net/mac80211/driver-ops.c:97 Modules linked in: CPU: 1 PID: 10547 Comm: syz-executor.1 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:drv_remove_interface+0x214/0x2a0 net/mac80211/driver-ops.c:97 Code: 06 00 00 48 8d b3 60 06 00 00 48 c7 c7 68 77 c3 84 c6 05 20 03 2c 02 01 8b 93 50 06 00 00 48 85 c0 48 0f 45 f0 e8 60 78 23 00 <0f> 0b e9 74 fe ff ff 0f 0b e9 5d fe ff ff 0f 0b e9 16 fe ff ff e8 RSP: 0018:ffffc900059cbb50 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88811fa28bc0 RCX: 0000000000000001 RDX: 0000000080000001 RSI: ffffffff84b93ae6 RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88811fa026f8 R13: 000000000000000f R14: ffff88811fa00c80 R15: ffff88811fa01ca8 FS: 0000000000000000(0000) GS:ffff88813bc00000(0063) knlGS:00000000f76ffb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007f27aebbc000 CR3: 000000011f881000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_do_stop+0x65d/0x9e0 net/mac80211/iface.c:613 ieee80211_stop+0x11/0x20 net/mac80211/iface.c:640 __dev_close_many+0xa4/0x120 net/core/dev.c:1612 __dev_close net/core/dev.c:1624 [inline] __dev_change_flags+0xd4/0x220 net/core/dev.c:8476 dev_change_flags+0x1e/0x60 net/core/dev.c:8549 devinet_ioctl+0x616/0x7f0 net/ipv4/devinet.c:1142 inet_ioctl+0x8c/0x140 net/ipv4/af_inet.c:967 sock_do_ioctl+0x38/0x140 net/socket.c:1037 compat_ifreq_ioctl net/socket.c:3302 [inline] compat_sock_ioctl_trans net/socket.c:3465 [inline] compat_sock_ioctl+0x312/0xfb0 net/socket.c:3498 __do_compat_sys_ioctl fs/ioctl.c:842 [inline] __se_compat_sys_ioctl fs/ioctl.c:793 [inline] __ia32_compat_sys_ioctl+0x125/0x140 fs/ioctl.c:793 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline] __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:137 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f05549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f76ff0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000008914 RDX: 0000000020001000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000